All Stories

  1. Corrosion and wetting behavior of monolithic refractory ceramics under molten lunar regolith electrolysis conditions

    Article • Acta Astronautica, November 2025, Elsevier

    Geoff Brennecka

  2. The more, the better: Al1− x (Mg,Hf)xN wurtzite ferroelectrics through co-alloying

    Article • Applied Physics Letters, October 2025, American Institute of Physics

    Geoff Brennecka

  3. Evolution of oxide composition, liquidus temperature, and viscosity during lunar molten regolith electrolysis

    Article • Acta Astronautica, September 2025, Elsevier

    Geoff Brennecka

  4. Structural characterization of highly alloyed (Al,Gd)N thin films

    Article • APL Materials, July 2025, American Institute of Physics

    Geoff Brennecka

  5. Ferroelectric epitaxial Al(Sc/B)N/Mo/SiC heterostructures for high operating temperature devices

    Article • Journal of Applied Physics, May 2025, American Institute of Physics

    Geoff Brennecka

  6. Polarization and domains in wurtzite ferroelectrics: Fundamentals and applications

    Article • Applied Physics Reviews, April 2025, American Institute of Physics

    Geoff Brennecka

  7. Oxygen Doping in Ferroelectric Wurtzite‐type Al0.73Sc0.27N: Improved Leakage and Polarity Control

    Article • Advanced Electronic Materials, March 2025, Wiley

    Geoff Brennecka

  8. Origins of Gamma-induced darkening of BaSO4

    Article • Radiation Physics and Chemistry, March 2025, Elsevier

    Geoff Brennecka

  9. From prediction to experimental realization of ferroelectric wurtzite Al1−xGdxN alloys

    Article • APL Materials, February 2025, American Institute of Physics

    Geoff Brennecka

  10. Low leakage current in heteroepitaxial Al0.7Sc...

    Article • Physical Review Applied, January 2025, American Physical Society (APS)

    Geoff Brennecka

  11. High energy storage density and efficiency of 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 thin films on platinized sapphire substrates

    Article • Journal of Materials Chemistry A, January 2025, Royal Society of Chemistry

    Geoff Brennecka

  12. Defects and oxygen impurities in ferroelectric wurtzite Al1−xScxN alloys

    Article • Applied Physics Letters, July 2024, American Institute of Physics

    Geoff Brennecka

  13. Engineering the Microstructure and Functional Properties of 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 Thin Films

    Article • ACS Applied Electronic Materials, May 2024, American Chemical Society (ACS)

    Geoff Brennecka

  14. Switching it up: New mechanisms revealed in wurtzite-type ferroelectrics

    Article • Science Advances, May 2024, American Association for the Advancement of Science

    Geoff Brennecka

  15. Interlayer registry effects on the electronic and piezoelectric properties of transition metal dichalcogenide bilayers

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, March 2024, American Vacuum Society

    Geoff Brennecka

  16. Combinatorial synthesis and characterization of thin film Al1−xRExN (RE = Pr3+ and Tb3+) heterostructural alloys

    Article • Journal of Materials Chemistry C, January 2024, Royal Society of Chemistry

    Geoff Brennecka

  17. Influence of neutron and gamma irradiation on the electrocaloric properties of Mn-doped 0.9Pb(Mg1/3Nb2/3)O3–0.1PbTiO3 ceramics

    Article • Journal of Physics Energy, September 2023, Institute of Physics Publishing

    Geoff Brennecka

  18. Investigation of Structural and Electrical Properties of Al2O3/Al Composites Prepared by Aerosol Co-Deposition

    Article • Crystals, May 2023, MDPI AG

    Geoff Brennecka

  19. Anomalously abrupt switching of wurtzite-structured ferroelectrics: simultaneous non-linear nucleation and growth model

    Article • Materials Horizons, January 2023, Royal Society of Chemistry

    Geoff Brennecka

  20. High-Speed and High-Power Ferroelectric Switching Current Measurement Instrument for Materials with Large Coercive Voltage and Remanent Polarization

    Article • Sensors, December 2022, MDPI AG

    Geoff Brennecka

  21. On the thermal and mechanical properties of Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O across the high-entropy to entropy-stabilized transition

    Article • APL Materials, December 2022, American Institute of Physics

    Christina Rost, Geoff Brennecka

  22. Synthesis and Calculations of Wurtzite Al 1– x Gd x <...

    Article • Chemistry of Materials, November 2022, American Chemical Society (ACS)

    Geoff Brennecka

  23. High-Throughput Selection and Experimental Realization of Two New Ce-Based Nitride Perovskites: CeMoN3 and CeWN3

    Article • Chemistry of Materials, August 2022, American Chemical Society (ACS)

    Geoff Brennecka

  24. A Landau–Devonshire analysis of strain effects on ferroelectric Al1−xScxN

    Article • Applied Physics Letters, July 2022, American Institute of Physics

    Geoff Brennecka

  25. First-principles indicators of ferroic parameters in epitaxial BiFeO3 and BiCrO3

    Article • Journal of Applied Physics, July 2022, American Institute of Physics

    Geoff Brennecka

  26. High-Temperature Ferroelectric Behavior of Al0.7Sc0.3N

    Article • Micromachines, May 2022, MDPI AG

    Geoff Brennecka

  27. Lithium diffusion in lithium tantalate as measured by confocal Raman spectroscopy

    Article • Journal of Materials Science, March 2022, Springer Science + Business Media

    Geoff Brennecka

  28. Local chemical origin of ferroelectric behavior in wurtzite nitrides

    Article • Journal of Materials Chemistry C, January 2022, Royal Society of Chemistry

    Geoff Brennecka

  29. Synthesis of LaWN 3 nitride perovskite with polar symmetry

    Article • Science, December 2021, American Association for the Advancement of Science

    Geoff Brennecka

  30. Density-functional theory calculation of magnetic properties of BiFeO3 and BiCrO3 under epitaxial strain

    Article • Journal of Applied Physics, September 2021, American Institute of Physics

    Geoff Brennecka

  31. Understanding Reproducibility of Sputter‐Deposited Metastable Ferroelectric Wurtzite Al0.6Sc0.4N Films Using In Situ Optical Emission Spectrometry

    Article • physica status solidi (RRL) - Rapid Research Letters, May 2021, Wiley

    Geoff Brennecka

  32. Reduced coercive field in epitaxial thin film of ferroelectric wurtzite Al0.7Sc0.3N

    Article • Applied Physics Letters, April 2021, American Institute of Physics

    Geoff Brennecka

  33. Quasi-static and dynamic fracture behavior of lead zirconate titanate: A study of poling and loading rate

    Article • Engineering Fracture Mechanics, April 2021, Elsevier

    Geoff Brennecka

  34. Exploring the phase space of Zn2SbN3, a novel semiconducting nitride

    Article • Journal of Materials Chemistry C, January 2021, Royal Society of Chemistry

    Geoff Brennecka

  35. Structural Instability in Electrically Stressed, Oxygen Deficient BaTiO3 Nanocrystals

    Article • Advanced Functional Materials, September 2020, Wiley

    Geoff Brennecka

  36. In Situ Transmission Electron Microscopy Study of Conductive Filament Formation in Copper Oxides

    Article • IEEE Transactions on Device and Materials Reliability, September 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Geoff Brennecka

  37. Stability of epitaxial BiXO3 phases by density-functional theory

    Article • APL Materials, August 2020, American Institute of Physics

    Geoff Brennecka

  38. Direct Observations of Field-Intensity-Dependent Dielectric Breakdown Mechanisms in TiO2 Single Nanocrystals

    Article • ACS Nano, June 2020, American Chemical Society (ACS)

    Geoff Brennecka

  39. Utilizing Site Disorder in the Development of New Energy-Relevant Semiconductors

    Article • ACS Energy Letters, April 2020, American Chemical Society (ACS)

    Geoff Brennecka

  40. Synthesis and Surface Chemistry of 2D TiVC Solid-Solution MXenes

    Article • ACS Applied Materials & Interfaces, April 2020, American Chemical Society (ACS)

    Geoff Brennecka

  41. Strengthened relaxor behavior in (1−x)Pb(Fe0.5Nb0.5)O3–xBiFeO3

    Article • Journal of Materials Chemistry C, January 2020, Royal Society of Chemistry

    Geoff Brennecka

  42. Remembering Joanna McKittrick

    Article • Journal of the American Ceramic Society, December 2019, Wiley

    Geoff Brennecka

  43. Improving the multicaloric properties of Pb(Fe0.5Nb0.5)O3 by controlling the sintering conditions and doping with manganese

    Article • Journal of the European Ceramic Society, November 2019, Elsevier

    Geoff Brennecka

  44. Review of high-throughput approaches to search for piezoelectric nitrides

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, October 2019, American Vacuum Society

    Geoff Brennecka

  45. In Situ TEM Study of the Amorphous-to-Crystalline Transition during Dielectric Breakdown in TiO2 Film

    Article • ACS Applied Materials & Interfaces, October 2019, American Chemical Society (ACS)

    Geoff Brennecka

  46. In situ TEM study of the transitions between crystalline Si and nonstoichiometric amorphous oxide under bipolar voltage bias

    Article • Journal of Applied Physics, June 2019, American Institute of Physics

    Geoff Brennecka

  47. Synthesis of Lanthanum Tungsten Oxynitride Perovskite Thin Films

    Article • Advanced Electronic Materials, June 2019, Wiley

    Geoff Brennecka

  48. COMBIgor: Data-Analysis Package for Combinatorial Materials Science

    Article • ACS Combinatorial Science, May 2019, American Chemical Society (ACS)

    Geoff Brennecka

  49. Characterization of Elastic Modulus Across the (Al1–<italic>x</italic>Sc<italic>x</italic>)N System Using DFT and Substrate-Effect-Corrected Nanoindentation

    Article • IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, November 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Geoff Brennecka

  50. Wideband 3D-Printed Dielectric Resonator Antennas

    Article • July 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Geoff Brennecka

  51. Implications of heterostructural alloying for enhanced piezoelectric performance of (Al,Sc)N

    Article • Physical Review Materials, June 2018, American Physical Society (APS)

    Geoff Brennecka

  52. Transparent polycrystalline Gd 2 Hf 2 O 7 ceramics

    Article • Journal of the American Ceramic Society, March 2018, Wiley

    Geoff Brennecka

  53. Enhanced Piezoelectric Response of AlN via CrN Alloying

    Article • Physical Review Applied, March 2018, American Physical Society (APS)

    Geoff Brennecka

  54. Large piezoelectric response of van der Waals layered solids

    Article • Journal of Materials Chemistry C, January 2018, Royal Society of Chemistry

    Geoff Brennecka

  55. Processing and characteristics of transparent Gd 3 TaO 7 polycrystalline ceramics

    Article • Journal of the American Ceramic Society, December 2017, Wiley

    Geoff Brennecka

  56. Tuning the piezoelectric and mechanical properties of the AlN system via alloying with YN and BN

    Article • Journal of Applied Physics, September 2017, American Institute of Physics

    Geoff Brennecka

  57. Nanoscale Compositional Analysis of a Thermally Processed Entropy-Stabilized Oxide via Correlative TEM and APT

    Article • Microscopy and Microanalysis, July 2017, Oxford University Press (OUP)

    Geoff Brennecka

  58. Phonon scattering mechanisms dictating the thermal conductivity of lead zirconate titanate (PbZr1−xTixO3) thin films across the compositional phase diagram

    Article • Journal of Applied Physics, May 2017, American Institute of Physics

    Geoff Brennecka

  59. Processing of crack-free high density polycrystalline LiTaO3 ceramics

    Article • Journal of Materials Science Materials in Electronics, November 2016, Springer Science + Business Media

    Distinguished Member of the Technical Staff Pin Yang, Geoff Brennecka

  60. Current Understanding of Structure-Processing-Property Relationships in BaTiO3 -Bi(M )O3 Dielectrics

    Article • Journal of the American Ceramic Society, September 2016, Wiley

    Geoff Brennecka

  61. Highly Textured BaTiO 3 via Templated Grain Growth and Resulting Polarization Reversal Dynamics

    Article • Journal of the American Ceramic Society, December 2015, Wiley

    Geoff Brennecka

  62. Thermal Conductivity of Self-Assembling Symmetric Block Copolymer Thin Films of Polystyrene-Block-Poly(methyl methacrylate)

    Article • Journal of Heat Transfer, October 2015, ASME International

    Geoff Brennecka

  63. Erratum: “Thermal transport in tantalum oxide films for memristive applications” [Appl. Phys. Lett. 107, 023108 (2015)]

    Article • Applied Physics Letters, August 2015, American Institute of Physics

    Geoff Brennecka

  64. Thermal transport in tantalum oxide films for memristive applications

    Article • Applied Physics Letters, July 2015, American Institute of Physics

    Geoff Brennecka

  65. Combined Experimental and Computational Methods Reveal the Evolution of Buried Interfaces during Synthesis of Ferroelectric Thin Films

    Article • Advanced Materials Interfaces, June 2015, Wiley

    Geoff Brennecka

  66. Solution Chemistry, Substrate, and Processing Effects on Chemical Homogeneity in Lead Zirconate Titanate Thin Films

    Article • Journal of the American Ceramic Society, March 2015, Wiley

    Geoff Brennecka

  67. Crystallographic changes in lead zirconate titanate due to neutron irradiation

    Article • AIP Advances, November 2014, American Institute of Physics

    Geoff Brennecka

  68. Quantifying Compositional Homogeneity in Pb(Zr,Ti)O3Using Atom Probe Tomography

    Article • Journal of the American Ceramic Society, July 2014, Wiley

    Geoff Brennecka

  69. Phase and Texture Evolution in Chemically Derived PZT Thin Films on Pt Substrates

    Article • Journal of the American Ceramic Society, June 2014, Wiley

    Geoff Brennecka

  70. Phase formation of BaTiO<sub>3</sub>–Bi(Zn<sub>1/2</sub>Ti<sub>1/2</sub>)O<sub>3</sub> perovskite ceramics

    Article • Journal of the Ceramic Society of Japan, January 2014, Ceramic Society of Japan

    Geoff Brennecka

  71. Electrical conductivity in oxygen-deficient phases of tantalum pentoxide from first-principles calculations

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

    Geoff Brennecka

  72. Effect of Switching Atmospheric Conditions during Crystallization on the Phase Evolution of Solution‐Derived Lead Zirconate Titanate Thin Films

    Article • Journal of the American Ceramic Society, August 2013, Wiley

    Geoff Brennecka

  73. Optical anisotropy near the relaxor-ferroelectric phase transition in lanthanum lead zirconate titanate

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

    Geoff Brennecka

  74. Atomic Scale Composition Profiling of Ferroelectrics via Laser-Pulsed Atom Probe Tomography and Cross-Correlative Transmission Electron Microscopy

    Article • Microscopy and Microanalysis, August 2013, Oxford University Press (OUP)

    Geoff Brennecka

  75. Phase and texture evolution in solution deposited lead zirconate titanate thin films: Formation and role of the Pt3Pb intermetallic phase

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

    Geoff Brennecka

  76. Neutron irradiation effects on domain wall mobility and reversibility in lead zirconate titanate thin films

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

    Geoff Brennecka

  77. On the Degradation Processes of Thin Film PZT in 0.1 N H2SO4

    Article • Journal of The Electrochemical Society, January 2013, The Electrochemical Society

    Geoff Brennecka

  78. Dielectric properties of BaTiO3–Bi(Zn1/2Ti1/2)O3–NaNbO3 solid solutions

    Article • Journal of Materials Science, November 2012, Springer Science + Business Media

    Geoff Brennecka

  79. In situ x-ray diffraction of solution-derived ferroelectric thin films for quantitative phase and texture evolution measurement

    Article • Journal of Applied Physics, November 2012, American Institute of Physics

    Geoff Brennecka

  80. Defect mechanisms in high resistivity BaTiO3–Bi(Zn1/2Ti1/2)O3 ceramics

    Article • Applied Physics Letters, September 2012, American Institute of Physics

    Geoff Brennecka

  81. Functional Coatings: Chemically Homogeneous Complex Oxide Thin Films Via Improved Substrate Metallization (Adv. Funct. Mater. 11/2012)

    Article • Advanced Functional Materials, June 2012, Wiley

    Geoff Brennecka

  82. Powder Synthesis and Hot-Pressing of a LiTaO3 Ceramic

    Article • Journal of the American Ceramic Society, May 2012, Wiley

    Geoff Brennecka

  83. Chemically Homogeneous Complex Oxide Thin Films Via Improved Substrate Metallization

    Article • Advanced Functional Materials, March 2012, Wiley

    Geoff Brennecka

  84. An Automated Electrochemical Probe for Evaluation of Thin Films

    Article • Journal of The Electrochemical Society, January 2012, The Electrochemical Society

    Geoff Brennecka

  85. Electrochemical Response of Ferroelectric PbZr0.52Ti0.48O3Thin Films

    Article • Journal of The Electrochemical Society, January 2012, The Electrochemical Society

    Geoff Brennecka

  86. Neutron flux characterization techniques for radiation effects studies

    Article • Journal of Radioanalytical and Nuclear Chemistry, June 2011, Springer Science + Business Media

    Geoff Brennecka

  87. Effect of domain structure on dielectric nonlinearity in epitaxial BiFeO3 films

    Article • Applied Physics Letters, December 2010, American Institute of Physics

    Geoff Brennecka

  88. Processing Technologies for High-Permittivity Thin Films in Capacitor Applications

    Article • Journal of the American Ceramic Society, December 2010, Wiley

    Geoff Brennecka

  89. Phase evolution in solution deposited Pb-deficient PLZT thin films

    Article • Journal of Materials Science, November 2010, Springer Science + Business Media

    Geoff Brennecka

  90. Quantitative X-Ray Spectrum Imaging of Lead Lanthanum Zirconate Titanate PLZT Thin-Films

    Article • Journal of the American Ceramic Society, November 2008, Wiley

    Geoff Brennecka

  91. Quantitative chemical analysis of fluorite-to-perovskite transformations in (Pb,La)(Zr,Ti)O3 PLZT thin films

    Article • Journal of Materials Research, November 2008, Cambridge University Press

    Geoff Brennecka

  92. Micro- and Nano-patterning of Solution-Derived Functional Electronic Ceramics

    Article • Microscopy and Microanalysis, August 2008, Cambridge University Press

    Geoff Brennecka

  93. Quantitative STEM-EDS Spectrum Imaging of Phase Transformations in (Pb, La)(Zr, Ti)O3

    Article • Microscopy and Microanalysis, August 2008, Cambridge University Press

    Geoff Brennecka

  94. Fabrication of Perovskite-Based High-Value Integrated Capacitors by Chemical Solution Deposition

    Article • Journal of the American Ceramic Society, June 2008, Wiley

    Geoff Brennecka

  95. Reversibility of the Perovskite-to-Fluorite Phase Transformation in Lead-Based Thin and Ultrathin Films

    Article • Advanced Materials, April 2008, Wiley

    Geoff Brennecka

  96. Fabrication of (Ba,Sr)TiO3 high-value integrated capacitors by chemical solution deposition

    Article • February 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Geoff Brennecka

  97. TF026

    Article • February 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Geoff Brennecka

  98. Multilayer thin and ultrathin film capacitors fabricated by chemical solution deposition

    Article • Journal of Materials Research, January 2008, Cambridge University Press

    Geoff Brennecka

  99. Fabrication of ultrathin film capacitors by chemical solution deposition

    Article • Journal of Materials Research, October 2007, Cambridge University Press

    Geoff Brennecka

  100. Phase Transformations in the High-Temperature Form of Pure and TiO2-Stabilized Ta2O5

    Article • Journal of the American Ceramic Society, September 2007, Wiley

    Geoff Brennecka

  101. Densification and Grain Growth for Powder-Derived Ta2O5-TiO2 Ceramics

    Article • Journal of the Ceramic Society of Japan, January 2007, Ceramic Society of Japan

    Geoff Brennecka

  102. Preparation of Dense Ta2O5-Based Ceramics by a Coated Powder Method for Enhanced Dielectric Properties

    Article • Journal of the American Ceramic Society, June 2006, Wiley

    Geoff Brennecka

  103. Use of Stress To Produce Highly Oriented Tetragonal Lead Zirconate Titanate (PZT 40/60) Thin Films and Resulting Electrical Properties

    Article • Journal of the American Ceramic Society, August 2004, Wiley

    Geoff Brennecka

  104. Micropen Printing of Electronic Components

    Article • January 2002, Elsevier

    Geoff Brennecka