All Stories

  1. Spin–phonon coupling in monoclinic BiCrO3

    Article • Journal of Applied Physics, March 2020, American Institute of Physics

    Alejandro Pedro Ayala

  2. The design of novel metronidazole benzoate structures: exploring stoichiometric diversity

    Article • Acta Crystallographica Section C Structural Chemistry, April 2019, International Union of Crystallography

    Alejandro Pedro Ayala

  3. Spin-phonon coupling in melanothallite Cu2OCl2

    Article • Applied Physics Letters, November 2018, American Institute of Physics

    Alejandro Pedro Ayala

  4. Raman spectroscopy investigation of the thermal stability of the multiferroic CuCl2 and its hydrated form

    Article • Vibrational Spectroscopy, November 2018, Elsevier

    Alejandro Pedro Ayala

  5. Crystal structure, vibrational spectra and quantum chemical parameters of 2-hydroxy-3,4,6-trimethoxyacetophenone isolated from the Croton anisodontus Müll. Arg. (Euphorbiaceae)

    Article • Journal of Molecular Structure, June 2018, Elsevier

    Alejandro Pedro Ayala

  6. Novel Solid Solution of the Antiretroviral Drugs Lamivudine and Emtricitabine

    Article • Crystal Growth & Design, May 2018, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  7. Mechanochemically induced solid state transformations: The case of raloxifene hydrochloride

    Article • European Journal of Pharmaceutical Sciences, March 2018, Elsevier

    Alejandro Pedro Ayala

  8. Crystalline structure of the marketed form of Rifampicin: a case of conformational and charge transfer polymorphism

    Article • Journal of Molecular Structure, March 2018, Elsevier

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  9. Improving Properties of Albendazole Desmotropes by Supramolecular Systems with Maltodextrin and Glutamic Acid

    Article • AAPS PharmSciTech, February 2018, American Association of Pharmaceutical Scientists (AAPS)

    Alejandro Pedro Ayala

  10. A combined experimental (IR, Raman and UV–Vis) and quantum chemical study of canadine

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, February 2018, Elsevier

    Alejandro Pedro Ayala

  11. Characterization of systems with amino-acids and oligosaccharides as modifiers of biopharmaceutical properties of furosemide

    Article • Journal of Pharmaceutical and Biomedical Analysis, February 2018, Elsevier

    Alejandro Pedro Ayala

  12. Application of 1-Dimensional and 2-Dimensional Solid-State Nuclear Magnetic Resonance Spectroscopy to the Characterization of Morphine, Morphine Hydrochloride, and Their Hydrates

    Article • Journal of Pharmaceutical Sciences, October 2017, Elsevier

    Alejandro Pedro Ayala

  13. Spectroscopic (far or terahertz, mid-infrared and Raman) investigation, thermal analysis and biological activity of piplartine

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, September 2017, Elsevier

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  14. Supramolecular interactions between β-lapachone with cyclodextrins studied using isothermal titration calorimetry and molecular modeling

    Article • Journal of Molecular Recognition, July 2017, Wiley

    Alejandro Pedro Ayala

  15. Study of Cr → SmA phase transition and hydrogen bonding in four-ring bent-core liquid crystal

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, May 2017, Elsevier

    Alejandro Pedro Ayala

  16. Temperature-dependent infrared study of phase transitions in bent-core liquid crystalline compound 12O(OH)2MeO10

    Article • Vibrational Spectroscopy, May 2017, Elsevier

    Alejandro Pedro Ayala

  17. Effect of V2O5 Addition on the Phase Composition of Bi5FeTi3O15 Ceramic and RF/Microwave Dielectric Properties

    Article • Journal of Electronic Materials, February 2017, Springer Science + Business Media

    Alejandro Pedro Ayala

  18. Study of molecular structure, chemical reactivity and H-bonding interactions in the cocrystal of nitrofurantoin with urea

    Article • New Journal of Chemistry, January 2017, Royal Society of Chemistry

    Alejandro Pedro Ayala

  19. Order–disorder phase transition induced by proton transfer in a co-crystal of 2,4-dichlorobenzoic acid and trimethylamine N-oxide

    Article • CrystEngComm, January 2017, Royal Society of Chemistry

    Dr Ihosvany Camps, Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  20. Magnetoelectric effects in the spiral magnets CuCl2and CuBr2

    Article • Journal of Physics Condensed Matter, November 2016, Institute of Physics Publishing

    Alejandro Pedro Ayala

  21. Molecular modeling and cytotoxicity of diffractaic acid: HP-β-CD inclusion complex encapsulated in microspheres

    Article • International Journal of Biological Macromolecules, November 2016, Elsevier

    Alejandro Pedro Ayala

  22. Phase transitions in secnidazole: Thermal stability and polymorphism studied by X-ray powder diffraction, thermal analysis and vibrational spectroscopy

    Article • Vibrational Spectroscopy, September 2016, Elsevier

    Alejandro Pedro Ayala

  23. Study of phase transitions in a bent-core liquid crystal probed by infrared spectroscopy

    Article • Vibrational Spectroscopy, September 2016, Elsevier

    Alejandro Pedro Ayala

  24. X-Ray diffraction, spectroscopy and thermochemical characterization of the pharmaceutical paroxetine nitrate salt

    Article • Journal of Molecular Structure, August 2016, Elsevier

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  25. Diffractaic acid: Crystalline structure and physicochemical characterization

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, August 2016, Elsevier

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  26. On the Thermal Stability of the Diethylcarbamazine-Fortified Table Salt Used in the Control of Lymphatic Filariasis

    Article • Journal of Pharmaceutical Sciences, August 2016, Elsevier

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  27. Effect of hydroxypropyl methylcellulose on beta cyclodextrin complexation of praziquantel in solution and in solid state

    Article • Journal of Inclusion Phenomena and Macrocyclic Chemistry, April 2016, Springer Science + Business Media

    Alejandro Pedro Ayala

  28. Reversible Solid-State Hydration/Dehydration of Paroxetine HBr Hemihydrate: Structural and Thermochemical Studies

    Article • Crystal Growth & Design, March 2016, American Chemical Society (ACS)

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  29. Supramolecular synthesis and thermochemical investigations of pharmaceutical inorganic isoniazid salts

    Article • CrystEngComm, January 2016, Royal Society of Chemistry

    Alejandro Pedro Ayala, Prof. Javier Alcides Ellena

  30. A combined experimental and theoretical approach to study SmC → NcybC phase transition in a four-ring bent-core liquid crystal

    Article • New Journal of Chemistry, January 2016, Royal Society of Chemistry

    Alejandro Pedro Ayala

  31. Leads from Physical, Chemical, and Thermal Characterization on Cytotoxic Effects of Xylan-Based Microparticles

    Article • Polymers, November 2015, MDPI AG

    Alejandro Pedro Ayala

  32. The temperature-dependent single-crystal Raman spectroscopy of a model dipeptide: l-Alanyl-l-alanine

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, September 2015, Elsevier

    Alejandro Pedro Ayala

  33. Role of rare-earth ionic radii on the spin–phonon coupling in multiferroic ordered double perovskites

    Article • Materials Research Express, July 2015, Institute of Physics Publishing

    Alejandro Pedro Ayala

  34. Vibrational and thermal analyses of multicomponent crystal forms of the anti-HIV drugs lamivudine and zalcitabine

    Article • Journal of Pharmaceutical and Biomedical Analysis, June 2015, Elsevier

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  35. Structural, hyperfine and Raman properties of RE2FeSbO7 compounds

    Article • Journal of Alloys and Compounds, January 2015, Elsevier

    Alejandro Pedro Ayala

  36. Spin-phonon and magnetostriction phenomena in CaMn7O12 helimagnet probed by Raman spectroscopy

    Article • Applied Physics Letters, December 2014, American Institute of Physics

    Alejandro Pedro Ayala

  37. Temperature-Driven Isosymmetric Reversible Phase Transition of the Hormone Estradiol 17β Valerate

    Article • Crystal Growth & Design, November 2014, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  38. Novel polymorphs of the anti-Trypanosoma cruzi drug benznidazole

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, January 2014, Elsevier

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  39. Quantum chemical studies of structural, vibrational, NBO and hyperpolarizability of ondansetron hydrochloride

    Article • Journal of Molecular Structure, January 2014, Elsevier

    Alejandro Pedro Ayala

  40. A Comparative Study of the Photosensitizer Penetration into Artificial Caries Lesions in Dentin Measured by the Confocal Raman Microscopy

    Article • Photochemistry and Photobiology, November 2013, Wiley

    Alejandro Pedro Ayala

  41. Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite

    Article • Journal of Applied Physics, November 2013, American Institute of Physics

    Alejandro Pedro Ayala

  42. The Continuum in 5-Fluorocytosine. Toward Salt Formation

    Article • Crystal Growth & Design, October 2013, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  43. Study of molecular structure, vibrational, electronic and NMR spectra of oncocalyxone A using DFT and quantum chemical calculations

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, September 2013, Elsevier

    Professor Pierre Fechine, Alejandro Pedro Ayala

  44. Phase diagram for charged scalars in a magnetic field at finite temperature

    Article • Physical Review D, August 2013, American Physical Society (APS)

    Alejandro Pedro Ayala

  45. Spin-phonon coupling in Y2NiMnO6 double perovskite probed by Raman spectroscopy

    Article • Applied Physics Letters, May 2013, American Institute of Physics

    Alejandro Pedro Ayala

  46. Raman spectra of Ga3PO7 single crystal

    Article • Materials Letters, May 2013, Elsevier

    Alejandro Pedro Ayala

  47. Room-temperature vibrational properties of the BiMn2O5 mullite

    Article • Vibrational Spectroscopy, May 2013, Elsevier

    Alejandro Pedro Ayala

  48. Structural characterization of bismuth rare earth tungstates obtained by fast microwave-assisted solid-state synthesis

    Article • Materials Chemistry and Physics, May 2013, Elsevier

    Alejandro Pedro Ayala

  49. Producing xylan/Eudragit® S100-based microparticles by chemical and physico-mechanical approaches as carriers for 5-aminosalicylic acid

    Article • Journal of Microencapsulation, April 2013, Taylor & Francis

    Alejandro Pedro Ayala

  50. Preparation and Study of Bismuth Rare-Earth Tungstate Composite Screen-Printed Thick Films

    Article • Journal of Electronic Materials, February 2013, Springer Science + Business Media

    Alejandro Pedro Ayala

  51. Study of polymorphism in imatinib mesylate: A quantum chemical approach using electronic and vibrational spectra

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, February 2013, Elsevier

    Alejandro Pedro Ayala

  52. Temperature-dependent Raman spectra of Bi2Sn2O7 ceramics

    Article • Vibrational Spectroscopy, January 2013, Elsevier

    Alejandro Pedro Ayala

  53. Optical phonon features in ferroelectric Bi3Fe1/2Nb3/2O9

    Article • Vibrational Spectroscopy, November 2012, Elsevier

    Alejandro Pedro Ayala

  54. Far-infrared slab lensing and subwavelength imaging in crystal quartz

    Article • Physical Review B, October 2012, American Physical Society (APS)

    Alejandro Pedro Ayala

  55. Base-Paired and Base-Stacked Structures of the Anti-HIV Drug Lamivudine: A Nucleoside DNA-Mimicry with Unprecedented Topology

    Article • Crystal Growth & Design, October 2012, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  56. Physicochemical properties and thermal stability of quercetin hydrates in the solid state

    Article • Thermochimica Acta, July 2012, Elsevier

    Alejandro Pedro Ayala

  57. Study on the structure and vibrational spectra of efavirenz conformers using DFT: Comparison to experimental data

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, March 2012, Elsevier

    Alejandro Pedro Ayala

  58. Nanostructured Ni-containing spinel oxides for the dry reforming of methane: Effect of the presence of cobalt and nickel on the deactivation behaviour of catalysts

    Article • International Journal of Hydrogen Energy, February 2012, Elsevier

    Alejandro Pedro Ayala

  59. Phonon spectra of CBN crystals

    Article • Vibrational Spectroscopy, January 2012, Elsevier

    Alejandro Pedro Ayala

  60. Polymorphism evaluation in generic tablets containing mebendazole by dissolution tests

    Article • Journal of the Brazilian Chemical Society, January 2012, FapUNIFESP (SciELO)

    Alejandro Pedro Ayala

  61. Tapes of water hexamer clusters in the interlayer space of a 2D MOF: Structural, spectroscopic and computational insight of the confined water

    Article • Polyhedron, January 2012, Elsevier

    Alejandro Pedro Ayala

  62. Ternary composites for glycerol conversion: The influence of structural and textural properties on catalytic activity

    Article • Applied Catalysis A General, October 2011, Elsevier

    Alejandro Pedro Ayala

  63. The encapsulation of β-lapachone in 2-hydroxypropyl-β-cyclodextrin inclusion complex into liposomes: A physicochemical evaluation and molecular modeling approach

    Article • European Journal of Pharmaceutical Sciences, October 2011, Elsevier

    Alejandro Pedro Ayala

  64. Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement

    Article • American Mineralogist, September 2011, GeoScienceWorld

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala, Dr Marcelo B Andrade

  65. Conformational polymorphism of the antidiabetic drug chlorpropamide

    Article • Journal of Raman Spectroscopy, July 2011, Wiley

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  66. Solid state characterization of an antioxidant alkaloid boldine using vibrational spectroscopy and quantum chemical calculations

    Article • Vibrational Spectroscopy, May 2011, Elsevier

    Alejandro Pedro Ayala

  67. About the SDS inclusion in PDMS/TEOS ORMOSIL: a vibrational spectroscopy and confocal Raman scattering study

    Article • Journal of Raman Spectroscopy, April 2011, Wiley

    Alejandro Pedro Ayala

  68. Phonons in isostructural (ND,Yb):YxGd1−x(VO4) laser crystals: A Raman scattering study

    Article • Journal of Solid State Chemistry, April 2011, Elsevier

    Alejandro Pedro Ayala

  69. Phase transitions in Pb8O5(XO4)2 (X = As and V) compounds

    Article • Journal of Raman Spectroscopy, March 2011, Wiley

    Alejandro Pedro Ayala

  70. Growth and characterization of congruent lithium isotope niobate (7LiNbO3) single crystal

    Article • Journal of Crystal Growth, March 2011, Elsevier

    Alejandro Pedro Ayala

  71. An optimized animal model for partial and total skin thickness burns studies

    Article • Acta Cirúrgica Brasileira, January 2011, FapUNIFESP (SciELO)

    Alejandro Pedro Ayala, Professor Gerly Anne de Castro Brito

  72. Thermal stability of aripiprazole monohydrate investigated by Raman spectroscopy

    Article • Vibrational Spectroscopy, November 2010, Elsevier

    Alejandro Pedro Ayala

  73. Using Phonon Resonances as a Route to All-Angle Negative Refraction in the Far-Infrared Region: The Case of Crystal Quartz

    Article • Physical Review Letters, October 2010, American Physical Society (APS)

    Alejandro Pedro Ayala

  74. Triple Structural Transition below Room Temperature in the Antifilarial Drug Diethylcarbamazine Citrate

    Article • Crystal Growth & Design, July 2010, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  75. Quantum chemical and experimental studies on the structure and vibrational spectra of efavirenz

    Article • Vibrational Spectroscopy, May 2010, Elsevier

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  76. Solvothermal Preparation of Drug Crystals: Didanosine

    Article • Crystal Growth & Design, April 2010, American Chemical Society (ACS)

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  77. Dehydrogenation of ethylbenzene with CO2 to produce styrene over Fe-containing ceramic composites

    Article • Applied Catalysis A General, April 2010, Elsevier

    Alejandro Pedro Ayala

  78. Optical-active phonons in A3Fe2B″O9 (A=Ca, Sr; B″=Te, W) double perovskites

    Article • Journal of Applied Physics, February 2010, American Institute of Physics

    Alejandro Pedro Ayala

  79. Molecular structure and vibrational spectroscopic analysis of an antiplatelet drug; clopidogrel hydrogen sulphate (form 2) – A combined experimental and quantum chemical approach

    Article • Journal of Molecular Structure, February 2010, Elsevier

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  80. Ethylbenzene to chemicals: Catalytic conversion of ethylbenzene into styrene over metal-containing MCM-41

    Article • Journal of Molecular Catalysis A Chemical, January 2010, Elsevier

    RONALDO NASCIMENTO, Alejandro Pedro Ayala

  81. Structural relationships in the solid state of the anti-chagas agent (E)-phenylethenylbenzofuroxan

    Article • Molecular Diversity, November 2009, Springer Science + Business Media

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  82. Raman investigations of rare-earth arsenate single crystals

    Article • Journal of Raman Spectroscopy, October 2009, Wiley

    Alejandro Pedro Ayala

  83. Temperature-dependent Raman spectra of Ba2BiSbO6ceramics

    Article • Journal of Raman Spectroscopy, September 2009, Wiley

    Alejandro Pedro Ayala

  84. Vibrational modes of rare-earth formates

    Article • Journal of Raman Spectroscopy, August 2009, Wiley

    Alejandro Pedro Ayala

  85. Vibrational study of A3In2B″O9(A = Ba, Sr; B″ = U, W) double perovskites

    Article • Journal of Raman Spectroscopy, August 2009, Wiley

    Alejandro Pedro Ayala

  86. Studies of catalytic activity and coke deactivation of spinel oxides during ethylbenzene dehydrogenation

    Article • Applied Catalysis A General, May 2009, Elsevier

    Alejandro Pedro Ayala

  87. Molecular Structure and Vibrational Spectroscopic Investigation of Secnidazole Using Density Functional Theory

    Article • The Journal of Physical Chemistry A, January 2009, American Chemical Society (ACS)

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  88. Synthesis, structure and vibrational properties of GdIGX:YIG1−X ferrimagnetic ceramic composite

    Article • Journal of Physics and Chemistry of Solids, January 2009, Elsevier

    Alejandro Pedro Ayala

  89. Polymorphism incidence in commercial tablets of mebendazole: a vibrational spectroscopy investigation

    Article • Journal of Raman Spectroscopy, September 2008, Wiley

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  90. Computer simulation of Na2ThF6single crystals: prediction of a phase transition under hydrostatic pressures

    Article • Journal of Physics Condensed Matter, March 2008, Institute of Physics Publishing

    Alejandro Pedro Ayala

  91. Raman spectroscopic characterization of RECa4O(BO3)3 (RE=La and Gd) crystals

    Article • Vibrational Spectroscopy, March 2008, Elsevier

    Alejandro Pedro Ayala

  92. Synthesis and Characterization of a New Mebendazole Salt: Mebendazole Hydrochloride

    Article • Journal of Pharmaceutical Sciences, January 2008, Elsevier

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  93. Low-temperature study of a new nevirapine pseudopolymorph

    Article • Acta Crystallographica Section E Structure Reports Online, December 2007, International Union of Crystallography

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  94. Polymorphism in drugs investigated by low wavenumber Raman scattering

    Article • Vibrational Spectroscopy, November 2007, Elsevier

    Alejandro Pedro Ayala

  95. Microstructural and electrical properties of PbTIO3 screen-printed thick films

    Article • Journal of Materials Science Materials in Electronics, October 2007, Springer Science + Business Media

    Alejandro Pedro Ayala

  96. Raman investigation of A2CoBO6 (A=Sr and Ca, B=Te and W) double perovskites

    Article • Journal of Applied Physics, June 2007, American Institute of Physics

    Alejandro Pedro Ayala

  97. Physicochemical characterization of deflazacort: Thermal analysis, crystallographic and spectroscopic study

    Article • Steroids, March 2007, Elsevier

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  98. Raman investigations of rare earth orthovanadates

    Article • Journal of Applied Physics, March 2007, American Institute of Physics

    Alejandro Pedro Ayala

  99. PAC investigation on the Zr-rich region of the PZT phase diagram

    Article • Physica B Condensed Matter, February 2007, Elsevier

    Alejandro Pedro Ayala

  100. Vibrational spectra and quantum mechanical calculations of antiretroviral drugs: Nevirapine

    Article • Journal of Molecular Structure, February 2007, Elsevier

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  101. Solid state characterization of olanzapine polymorphs using vibrational spectroscopy

    Article • International Journal of Pharmaceutics, December 2006, Elsevier

    Alejandro Pedro Ayala, Prof. Dr. Heinz Wilhelm Siesler

  102. Spin and temperature dependence of the magnetic hyperfine field of 111Cd in the rare earth-aluminum Lavesphase compounds RAl2

    Article • Journal of Magnetism and Magnetic Materials, November 2006, Elsevier

    Alejandro Pedro Ayala

  103. Vibrational spectra of monazite-type rare-earth orthophosphates

    Article • Optical Materials, November 2006, Elsevier

    Alejandro Pedro Ayala

  104. The Orthorhombic to Tetragonal Phase Transition in Bi2−xTexSrNb2−xHfxO9

    Article • Ferroelectrics, August 2006, Taylor & Francis

    Alejandro Pedro Ayala

  105. Hyperfine characterization of Bi1.9Te0.1SrNb1.9Hf0.1O9

    Article • Solid State Communications, July 2006, Elsevier

    Alejandro Pedro Ayala

  106. About the Ferroelectricity of SrAlF5

    Article • Ferroelectrics, June 2006, Taylor & Francis

    Alejandro Pedro Ayala

  107. Dielectric behaviour and phase transition of SrAlF5 single crystals

    Article • Journal of Physics Condensed Matter, February 2006, Institute of Physics Publishing

    Alejandro Pedro Ayala

  108. Study of the Aurivillius phases Bi4Srn−3TinO3n+3 (n=4, 5) synthesized by mechanochemical activation

    Article • Solid State Communications, December 2005, Elsevier

    Alejandro Pedro Ayala

  109. Thermal behaviour and stability in Olanzapine

    Article • International Journal of Pharmaceutics, September 2005, Elsevier

    Alejandro Pedro Ayala

  110. Ab initiocalculations ofCaCu3Ti4O12under high pressure: Structural and electronic properties

    Article • Physical Review B, July 2005, American Physical Society (APS)

    Alejandro Pedro Ayala

  111. Structural and dielectric properties of Nd3+-doped Ba0.77Ca0.23TiO3 ceramics

    Article • Journal of Applied Physics, May 2005, American Institute of Physics

    Alejandro Pedro Ayala

  112. Vibrational spectrum and lattice dynamics of KY3F10 single crystals

    Article • Vibrational Spectroscopy, January 2005, Elsevier

    Alejandro Pedro Ayala

  113. Phonon spectra of terbium-doped lutetium orthophosphates

    Article • Journal of Applied Physics, December 2004, American Institute of Physics

    Alejandro Pedro Ayala

  114. Raman scattering and x-ray diffraction studies of polycrystalline Ca Cu 3 Ti 4 O 12 under high-pressure

    Article • Physical Review B, October 2004, American Physical Society (APS)

    Professor Antonio Gomes Souza FIlho, Alejandro Pedro Ayala

  115. Crystalline structure of SrAlF5 investigated by vibrational spectroscopy

    Article • Journal of Physics Condensed Matter, October 2004, Institute of Physics Publishing

    Alejandro Pedro Ayala

  116. Crystal structure and vibrational spectrum of the NaCaMg2F7 pyrochlore

    Article • Journal of Solid State Chemistry, August 2004, Elsevier

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  117. Phase diagram of the relaxor (1−x)Pb(Zn1/3Nb2/3)O3–xPbTiO3 investigated by dielectric and Raman spectroscopies

    Article • Solid State Communications, July 2004, Elsevier

    Alejandro Pedro Ayala

  118. The ferro–paraelectric phase transition of Pb0.6Ba0.4Nb2O6 investigated by Raman scattering

    Article • physica status solidi (b), July 2004, Wiley

    Alejandro Pedro Ayala

  119. The orthorhombic to tetragonal phase transition in Bi1.75Te0.25SrNb1.75Hf0.25O9

    Article • Journal of Physics Condensed Matter, May 2004, Institute of Physics Publishing

    Alejandro Pedro Ayala

  120. Optical and electrical properties of barium titanate-hydroxyapatite composite screen-printed thick films

    Article • Solid State Sciences, March 2004, Elsevier

    Alejandro Pedro Ayala

  121. Raman scattering study of Tb(V1−xPx)O4 single crystals

    Article • Journal of Applied Physics, February 2004, American Institute of Physics

    Alejandro Pedro Ayala

  122. Thermal behavior in Pr(HCOO)3 crystals

    Article • Journal of Raman Spectroscopy, February 2004, Wiley

    Alejandro Pedro Ayala

  123. Sequence of structural phase transitions of CsInF4 crystal

    Article • Solid State Communications, February 2004, Elsevier

    Alejandro Pedro Ayala

  124. Raman Scattering Investigations on the PBN Phase Diagram

    Article • Ferroelectrics, January 2004, Taylor & Francis

    Alejandro Pedro Ayala

  125. New crystals in the lithium sulfate family

    Article • Acta Crystallographica Section C Crystal Structure Communications, June 2003, International Union of Crystallography

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  126. Vibrational spectrum of Na2ThF6 single crystals

    Article • Vibrational Spectroscopy, May 2003, Elsevier

    Alejandro Pedro Ayala

  127. Low-temperature Raman spectra of Sr0.66Ba0.34Nb2O6 single-crystal fibers

    Article • Journal of Raman Spectroscopy, January 2003, Wiley

    Alejandro Pedro Ayala, Dr. ivair santos

  128. Disorder-induced symmetry lowering in theCsInMgF6pyrochlore crystal

    Article • December 2002, American Physical Society (APS)

    Alejandro Pedro Ayala

  129. Raman scattering study of the PbZr 1 − x Ti x O 3 system: Rhombohedral-monoclinic-tetragonal phase transitions

    Article • October 2002, American Physical Society (APS)

    Professor Antonio Gomes Souza FIlho, Alejandro Pedro Ayala

  130. Low-temperature phase transition in CsInF4

    Article • Solid State Communications, June 2002, Elsevier

    Alejandro Pedro Ayala

  131. Single-crystal structure determination and infrared reflectivity study of the Li2CaHfF8 scheelite

    Article • Journal of Physics Condensed Matter, May 2002, Institute of Physics Publishing

    Prof. Javier Alcides Ellena, Alejandro Pedro Ayala

  132. Evidence for a new structure in a mixed metal sulphate system by EXAFS

    Article • X-Ray Spectrometry, January 2002, Wiley

    Alejandro Pedro Ayala

  133. Hyperfine Interactions in the Cubic Phase of BaTi x Hf 1− x O 3

    Article • Ferroelectrics, January 2002, Taylor & Francis

    Alejandro Pedro Ayala

  134. Monoclinic–orthorhombic phase transition in Ba2Cu(HCOO)6 crystals: a Raman scattering study

    Article • Journal of Raman Spectroscopy, January 2002, Wiley

    Alejandro Pedro Ayala

  135. Phonons in isostructural compounds CuxM1?x(HCOO)2�2H2O (M = Mn, Co, Ni, Zn, and Cd): a Raman scattering study

    Article • Journal of Raman Spectroscopy, January 2002, Wiley

    Alejandro Pedro Ayala

  136. Temperature-dependent Raman scattering studies in NaNbO3 ceramics

    Article • Journal of Raman Spectroscopy, January 2002, Wiley

    Alejandro Pedro Ayala

  137. Temperature-dependent Raman scattering study of Fe3O2BO3ludwigite

    Article • Journal of Raman Spectroscopy, January 2002, Wiley

    Alejandro Pedro Ayala

  138. Raman and infrared spectroscopic studies of the Li3Na3In2F12fluoride garnet

    Article • Journal of Physics Condensed Matter, December 2001, Institute of Physics Publishing

    Alejandro Pedro Ayala

  139. Atomistic simulations of the pressure-induced phase transitions in BaF2crystals

    Article • Journal of Physics Condensed Matter, November 2001, Institute of Physics Publishing

    Alejandro Pedro Ayala

  140. Computer modelling of intrinsic defects and migration processes in KY3F10

    Article • Radiation Effects and Defects in Solids, November 2001, Taylor & Francis

    Alejandro Pedro Ayala

  141. Temperature Dependence of the Hyperfine Interaction at 181Ta in SrHfO3

    Article • Journal of Solid State Chemistry, June 2001, Elsevier

    Alejandro Pedro Ayala

  142. Raman study of morphotropic phase boundary inPbZr1−xTixO3at low temperatures

    Article • April 2001, American Physical Society (APS)

    Alejandro Pedro Ayala

  143. Article • Hyperfine Interactions, January 2001, Springer Science + Business Media

    Alejandro Pedro Ayala

  144. Article • Hyperfine Interactions, January 2001, Springer Science + Business Media

    Alejandro Pedro Ayala

  145. Temperature dependent Raman scattering studies in CsLiSO4 and RbxCs1?xLiSO4 (x = 0.35)

    Article • Journal of Raman Spectroscopy, January 2001, Wiley

    Alejandro Pedro Ayala

  146. Ionic conductivity and crystalline structure of Li2CaHfF8 crystals

    Article • Solid State Ionics, November 2000, Elsevier

    Alejandro Pedro Ayala

  147. Temperature-Dependent Raman Study of CaCu(HCOO)4 and Ca2Cu(HCOO)6 Crystals

    Article • Journal of Solid State Chemistry, November 2000, Elsevier

    Alejandro Pedro Ayala

  148. High-pressure Raman study of l-alanine crystal

    Article • Solid State Communications, October 2000, Elsevier

    Alejandro Pedro Ayala

  149. A new phase in the LiRbSO4-LiCsSO4system

    Article • Journal of Physics Condensed Matter, August 2000, Institute of Physics Publishing

    Alejandro Pedro Ayala

  150. Pressure effects in the Raman spectrum of WO 3 microcrystals

    Article • August 2000, American Physical Society (APS)

    Professor Antonio Gomes Souza FIlho, Alejandro Pedro Ayala

  151. Monoclinic phase of PbZr 0.52 Ti 0.48 O 3 ceramics: Raman and phenomenological thermodynamic studies

    Article • June 2000, American Physical Society (APS)

    Professor Antonio Gomes Souza FIlho, Alejandro Pedro Ayala

  152. High temperature neutron diffraction study of LiK1-xRbxSO4crystals

    Article • Journal of Physics Condensed Matter, August 1999, Institute of Physics Publishing

    Alejandro Pedro Ayala

  153. Hyperfine interactions in the perovskites SrHfO3 and BaHfO3 observed with 111In/111Cd perturbed angular correlations

    Article • Journal of Physics and Chemistry of Solids, June 1999, Elsevier

    Alejandro Pedro Ayala

  154. Article • January 1999, Springer Science + Business Media

    Alejandro Pedro Ayala

  155. Article • January 1999, Springer Science + Business Media

    Alejandro Pedro Ayala

  156. Raman spectroscopy characterization of Li2CaHfF8crystals

    Article • Journal of Physics Condensed Matter, January 1999, Institute of Physics Publishing

    Alejandro Pedro Ayala

  157. The Structural Phase Transitions in LiK 0.50Rb 0.50SO 4 Mixed Crystal

    Article • Journal of the Physical Society of Japan, December 1998, Physical Society of Japan

    Alejandro Pedro Ayala

  158. Electrical and dielectric investigations of the conduction processes in crystals

    Article • Journal of Physics Condensed Matter, June 1998, Institute of Physics Publishing

    Alejandro Pedro Ayala

  159. Temperature dependence of the nuclear quadrupole interaction at Zr-Ti sites in in the Zr-rich rhombohedral and cubic phases

    Article • Journal of Physics Condensed Matter, March 1998, Institute of Physics Publishing

    Alejandro Pedro Ayala

  160. Phase diagram of mixed LiK1-xRbxSO4 crystals

    Article • Solid State Communications, January 1998, Elsevier

    Alejandro Pedro Ayala

  161. The stability of PbZr0.52Ti0.48O3 prepared by the sol-gel method

    Article • Solid State Communications, January 1998, Elsevier

    Alejandro Pedro Ayala

  162. Electronic structure of cubicSrHfO3: Ferroelectric stability and detailed comparison withSrTiO3

    Article • January 1997, American Physical Society (APS)

    Alejandro Pedro Ayala

  163. Correlation between the structure and properties of rare-earth titanates with formula (LnM)TiO3

    Article • Acta Crystallographica Section A Foundations of Crystallography, August 1996, International Union of Crystallography

    Alejandro Pedro Ayala

  164. High-temperature phase transition of SrRuO3and SrHfO5: X-ray diffraction and PAC spectroscopy

    Article • Acta Crystallographica Section A Foundations of Crystallography, August 1996, International Union of Crystallography

    Alejandro Pedro Ayala

  165. Stabilization of β-Bi2O3 by hafnia

    Article • Solid State Communications, August 1996, Elsevier

    Alejandro Pedro Ayala

  166. Measurement of the K X-ray absorption jump ratio of erbium by attenuation of a compton peak

    Article • Radiation Physics and Chemistry, February 1996, Elsevier

    Alejandro Pedro Ayala

  167. Temperature dependence of the hyperfine electric-field-gradient tensor atTa181in HfO2

    Article • August 1994, American Physical Society (APS)

    Alejandro Pedro Ayala