Atsufumi Hirohata

University of York
Faculty Member, Engineering & Technology
United Kingdom

My co-authors include

Professor Denis D Sheka

Hiroaki Sukegawa

Find me at

My Publications

Growth and Characterisation of Antiferromagnetic Ni2MnAl Heusler Alloy Films

Magnetochemistry
September 2021

Revealing the importance of interfaces for pure spin current transport

Physical Review Research
May 2021

Thermally assisted magnetisation reversal

Applied Physics Letters
April 2021

Global snapshot of the effects of the COVID-19 pandemic on the research activities of m...

Science and Technology of Advanced Materials
April 2021

Heusler alloys for spintronic devices: review on recent development and future perspect...

Science and Technology of Advanced Materials
March 2021

Magnetic braille using ferrofluids

Journal of Physics D Applied Physics
March 2021

Non-Destructive Imaging on Synthesised Nanoparticles

Materials
January 2021

Review on spintronics: Principles and device applications

Journal of Magnetism and Magnetic Materials
September 2020

The 2020 magnetism roadmap

Journal of Physics D Applied Physics
August 2020

Magnetic tunnel junctions with metastable bcc Co3Mn electrodes

Applied Physics Express
August 2020

Opportunities and challenges for spintronics in the microelectronics industry

Nature Electronics
August 2020

Anisotropy in antiferromagnets

Journal of Applied Physics
July 2020

Experimental inspection of a computationally-designed NiCrMnSi Heusler alloy with high ...

Japanese Journal of Applied Physics
June 2020

A review of methods and data to determine raw material criticality

Resources Conservation and Recycling
April 2020

Non-destructive imaging for quality assurance of magnetoresistive random-access memory ...

Journal of Physics D Applied Physics
October 2019

Switching of Skyrmion chirality by local heating

Scientific Reports
September 2019

Controllability of cupric particle synthesis by linear alcohol chain number as additive...

Journal of Synchrotron Radiation
September 2019

Magnetic tunnel junctions with a B2 -ordered CoFeCrAl equiatomic Heusler alloy

Physical Review Materials
August 2019

In-plane and perpendicular exchange bias effect induced by an antiferromagnetic D019 Mn...

Journal of Magnetism and Magnetic Materials
August 2019

Low-temperature crystallisation of Heusler alloy films with perpendicular magnetic anis...

Journal of Magnetism and Magnetic Materials
August 2019

Fabrication of magnetic tunnel junctions with a metastable bcc Co3Mn disordered alloy a...

Japanese Journal of Applied Physics
July 2019

Thermal stability of exchange bias systems based on MnN

Journal of Magnetism and Magnetic Materials
April 2019

Structural and antiferromagnetic characterization of noncollinear D019 Mn3Ge polycrysta...

Journal of Magnetism and Magnetic Materials
March 2019

Magnetic Force Microscopy for Magnetic Recording and Devices

January 2019

Growth and characterisation of ferromagnetic and antiferromagnetic Fe2+x V y Al Heusler...

Journal of Physics D Applied Physics
July 2018

Chemical and structural analysis on magnetic tunnel junctions using a decelerated scann...

Scientific Reports
May 2018

Large exchange bias induced by polycrystalline Mn3Ga antiferromagnetic films with contr...

Journal of Physics D Applied Physics
May 2018

Heusler alloys with bcc tungsten seed layers for GMR junctions

Journal of Magnetism and Magnetic Materials
May 2018

Magneto-optical detection of spin accumulation under the influence of mechanical rotation

Scientific Reports
January 2018

Perpendicular Magnetic Anisotropy in Heusler Alloy Films and Their Magnetoresistive Jun...

Materials
January 2018

Spintronics based random access memory: a review

Materials Today
November 2017

Development of antiferromagnetic Heusler alloys for the replacement of iridium as a cri...

Journal of Physics D Applied Physics
September 2017

Magnetic and structural properties of antiferromagnetic Mn2VSi alloy films grown at ele...

Journal of Physics D Applied Physics
August 2017

Fabrication of Epitaxial Fe3O4 Film on a Si(111) Substrate

Scientific Reports
August 2017

Integration of antiferromagnetic Heusler compound Ru<sub>2</sub>MnGe into spintronic de...

Applied Physics Letters
July 2017

Growth and characterisation of antiferromagnetic polycrystalline Mn<inf>3</inf>Ga films

April 2017

Exchange bias induced at a Co2FeAl0.5Si0.5/Cr interface

Journal of Physics D Applied Physics
February 2017

The antiphase boundary in half-metallic Heusler alloy Co<sub>2</sub>Fe(Al,Si): atomic s...

Applied Physics Letters
November 2016

Highly Efficient Spin-Current Operation in a Cu Nano-Ring

Scientific Reports
November 2016

Realisation of magnetically and atomically abrupt half-metal/semiconductor interface: C...

Scientific Reports
November 2016

Non-destructive imaging of buried electronic interfaces using a decelerated scanning el...

Nature Communications
September 2016

Controlling the half-metallicity of Heusler/Si(1 1 1) interfaces by a monolayer of Si–C...

Journal of Physics Condensed Matter
August 2016

Perpendicular Anisotropy in Heusler Alloy Layers Induced by a V Seed Layer

IEEE Transactions on Magnetics
July 2016

Exchange bias effects in Heusler alloy Ni2MnAl/Fe bilayers

Journal of Physics D Applied Physics
May 2016

The role of chemical structure on the magnetic and electronic properties of Co<sub>2</s...

Applied Physics Letters
April 2016

The effect of atomic structure on interface spin-polarization of half-metallic spin val...

Applied Physics Letters
November 2015

Exchange Bias of Polycrystalline Heusler Alloy Thin Films

November 2015

Heusler Alloy Films for Spintronic Devices

November 2015

Roadmap for Emerging Materials for Spintronic Device Applications

IEEE Transactions on Magnetics
October 2015

Direct band-gap measurement on epitaxial Co<sub>2</sub>FeAl<sub>0.5</sub>Si<sub>0.5</su...

Journal of Applied Physics
May 2015

Optimisation of geometrical ratchets for spin-current amplification

Journal of Applied Physics
May 2015

Domain wall pinning for racetrack memory using exchange bias

May 2015

Dependence of Curie temperature on Pt layer thickness in Co/Pt system

Applied Physics Letters
March 2015

FOREWORD

SPIN
December 2014

POLYCRYSTALLINE CO-BASED FULL-HEUSLER-ALLOY FILMS FOR SPINTRONIC DEVICES

SPIN
December 2014

Spin-current signal amplification by a geometrical ratchet

Journal of Physics D Applied Physics
November 2014

New Bandgap Measurement Technique for a Half-Metallic Ferromagnet

IEEE Transactions on Magnetics
November 2014

Domain wall pinning for racetrack memory using exchange bias

Applied Physics Letters
October 2014

Over 50% reduction in the formation energy of Co-based Heusler alloy films by two-dimen...

Applied Physics Letters
July 2014

Correlations between atomic structure and giant magnetoresistance ratio in Co<sub>2</su...

Journal of Physics D Applied Physics
July 2014

Growth of polycrystalline Heusler alloys for spintronic devices

Journal of Physics D Applied Physics
June 2014

Investigation of the temperature-dependence of ferromagnetic resonance and spin waves i...

Applied Physics Letters
June 2014

Effect of grain cutting in exchange biased nanostructures

Journal of Applied Physics
May 2014

Optimization of exchange bias in Co<sub>2</sub>FeAl<sub>0.5</sub>Si<sub>0.5</sub> Heusl...

Journal of Applied Physics
May 2014

Future perspectives for spintronic devices

Journal of Physics D Applied Physics
April 2014

The Effect of Cobalt-Sublattice Disorder on Spin Polarisation in Co2FexMn1−xSi Heusler ...

Materials
February 2014

Correlation of Microstructure and Transport Properties of Multilayered Graphene Spin Va...

Journal of Physics Conference Series
November 2013

Heusler-alloy films for spintronic devices

Applied Physics A
March 2013

Uniaxial anisotropy of two-magnon scattering in an ultrathin epitaxial Fe layer on GaAs

Applied Physics Letters
February 2013

Correlating the interface structure to spin injection in abrupt Fe/GaAs(001) films

Physical Review B
January 2013

Room-temperature structural ordering of a Heusler compound Fe3Si

Physical Review B
November 2012

Effect of Interface Structure on Exchange Biased Heusler Alloy Films

IEEE Transactions on Magnetics
November 2012

Effect of Seed Layers on Polycrystalline ${\rm Co}_{2}{\rm FeSi}$ Thin Films

IEEE Transactions on Magnetics
November 2012

Magnetic Properties of Epitaxial Co-Evaporated Fe:MgO Anti-Granular Films

IEEE Transactions on Magnetics
November 2012

The effect of interfaces on magnetic activation volumes in single crystal Co<sub>2</sub...

Applied Physics Letters
September 2012

Observation of Magnetic-Switching and Multiferroic-Like Behavior of Co Nanoparticles in...

Advanced Functional Materials
June 2012

Growth and characterization of thin Cu-phthalocyanine films on MgO(001) layer for organ...

Nanoscale Research Letters
January 2012

Layer-by-layer crystallization of Co2FeSi Heusler alloy thin films

Journal of Physics D Applied Physics
December 2011

Temperature estimation in a ferromagnetic Fe–Ni nanowire involving a current-driven dom...

Journal of Physics Condensed Matter
December 2011

Activation Volumes in Co$_{2}$FeSi Thin Films

IEEE Transactions on Magnetics
October 2011

Atomic Interfacial Structures in Fe/GaAs Films

IEEE Transactions on Magnetics
October 2011

Enhancement of Exchange Bias in the ${\rm Co}_{2}{\rm FeSi/IrMn}$ System

IEEE Transactions on Magnetics
October 2011

Spin-transfer-torque-induced phenomena

Journal of Physics D Applied Physics
September 2011

Effect of grain size on exchange-biased Heusler alloys

Journal of Physics D Applied Physics
August 2011

The effect of film and interface structure on the transport properties of Heusler based...

Applied Physics Letters
June 2011

Interfacial structure and transport properties of Fe/GaAs(001)

Journal of Applied Physics
April 2011

Optimization of exchange-biased Heusler alloys

Journal of Physics D Applied Physics
March 2011

Schottky Barrier Height in Fe/GaAs Films

IEEE Transactions on Magnetics
June 2010

Interfacial structure and magnetic properties of Co2FeAl0.5Si0.5/MgO heterostructures

Journal of Applied Physics
May 2010

Si segregation in polycrystalline Co2MnSi films with grain-size control

Applied Physics Letters
December 2009

Current manipulation of a vortex confined in a micron-sized Fe19Ni81 disk

Applied Physics Letters
September 2009

Anomalous Hall voltage rectification and quantized spin-wave excitation induced by simu...

Physical Review B
June 2009

Observation of a bias-dependent constrained magnetic wall in a Ni point contact

Physical Review B
December 2008

Spin polarization control through resonant states in an Fe/GaAs Schottky barrier

Physical Review B
December 2008

Broadband ferromagnetic resonance ofNi81Fe19wires using a rectifying effect

Physical Review B
September 2008

DC electrical response and impedance change induced by a microwave signal in a patterne...

August 2008

A silicon metal-oxide-semiconductor field-effect transistor Hall bar for scanning Hall ...

Review of Scientific Instruments
August 2008

Effect of ferromagnetism on AB oscillations in a normal-metal ring

Physical Review B
April 2008

Domain formation induced by perpendicular spin injection

Journal of Magnetism and Magnetic Materials
March 2007

Current-induced vortex-vortex switching in a nanopillar comprising two Co nano-rings

Applied Physics Letters
February 2007

Magnetic characterization and switching of Co nanorings in current-perpendicular-to-pla...

Applied Physics Letters
January 2007

Temperature dependence of intrinsic switching current of a Co nanomagnet

Applied Physics Letters
December 2006

Estimation of local and nonlocal contributions to the current-induced magnetization swi...

Physical Review B
October 2006

Spin-transfer-induced magnetic domain formation

Journal of Applied Physics
October 2006

Structural and electrical properties of InSe polycrystalline films and diode fabrication

Thin Solid Films
July 2006

Heusler alloy/semiconductor hybrid structures

Current Opinion in Solid State and Materials Science
April 2006

Influence of capping layer on the current-induced magnetization switching in magnetic n...

Journal of Applied Physics
April 2006

Magnetic transport mechanism in double ferromagnetic tunnel junctions with two-dimensio...

IEEE Transactions on Magnetics
October 2005

Magnetic properties of epitaxial Co/sub 2/Cr/sub 1-x/Fe/sub x/Al full Heusler alloy thi...

IEEE Transactions on Magnetics
October 2005

Distinctive current-induced magnetization switching in a current-perpendicular-to-plan...

Applied Physics Letters
June 2005

Magnetic properties of L21-structured Co2(Cr,Fe)Al films grown on GaAs(001) substrates

Journal of Applied Physics
May 2005

Structural and magnetic properties of epitaxial L21-structured Co2(Cr,Fe)Al films grown...

Journal of Applied Physics
May 2005

Erratum: Corrigendum: Substantial reduction of critical current for magnetization switc...

Nature Materials
April 2005

Bias voltage effect on tunnel magnetoresistance in fully epitaxial MgO double-barrier m...

Applied Physics Letters
February 2005

Significant Magnetoresistance Enhancement due to a Cotunneling Process in a Double Tunn...

Physical Review Letters
February 2005

Tunnel magnetoresistance enhancement in ferromagnetic tunnel junctions with ferromagnet...

January 2005

Tunnel magnetoresistance in fully epitaxial MgO double barrier magnetic tunnel junctions

January 2005

Spin-dependent quantum oscillations in magnetic tunnel junctions with Ru quantum wells

Physical Review B
November 2004

Magnetoresistance in tunnel junctions using Co2(Cr,Fe)Al full Heusler alloys

Journal of Applied Physics
June 2004

Substantial reduction of critical current for magnetization switching in an exchange-bi...

Nature Materials
May 2004

Effective Reduction of Critical Current for Current-Induced Magnetization Switching by ...

Physical Review Letters
April 2004

Highly efficient spin filtering of ballistic electrons

Physical Review B
April 2004

Magnetic switching properties of magnetic tunnel junctions using a synthetic ferrimagne...

Journal of Applied Physics
April 2004

Electron spin filtering in ferromagnet/semiconductor heterostructures

Journal of Physics D Applied Physics
September 2003

Ballistic spin filtering across ferromagnet/semiconductor interfaces at room temperature

July 2002

Geometric coercivity scaling in magnetic thin film antidot arrays

Journal of Magnetism and Magnetic Materials
April 2002

Influence of crystalline structures on the domain configurations in controlled mesoscop...

Journal of Applied Physics
January 2002

Test of ballistic spin-polarized electron transport across ferromagnet/semiconductor Sc...

Journal of Applied Physics
January 2002

Effects of interdot dipole coupling in mesoscopic epitaxial Fe[100] dot arrays

IEEE Transactions on Magnetics
July 2001

Correction to "Spin-polarized electron transport processes at the ferromagnet/semicondu...

IEEE Transactions on Magnetics
July 2001

Spin-polarized electron transport in ferromagnet/semiconductor hybrid structures (invited)

Journal of Applied Physics
June 2001

Domain-wall trapping in controlled mesoscopic ferromagnetic wire junctions

Journal of Magnetism and Magnetic Materials
May 2001

Spin-polarized electron transport in a NiFe/GaAs Schottky diode

Journal of Magnetism and Magnetic Materials
May 2001

Spin-polarized electron transport in ferromagnet/semiconductor hybrid structures induce...

February 2001

Magnetoresistance of a domain wall at a submicron junction

June 2000

Domain wall trapping in controlled submicron ferromagnetic elements

Journal of Applied Physics
May 2000

Micromagnetism in mesoscopic epitaxial Fe dot arrays

Journal of Applied Physics
May 2000

Spin-dependent electron transport in NiFe/GaAs Schottky barrier structures

Journal of Applied Physics
May 2000

Domain nucleation processes in mesoscopic Ni80Fe20 wire junctions

Journal of Applied Physics
March 2000

Magnetic nanoscale dots on colloid crystal surfaces

Applied Physics Letters
February 2000

Magnetic domain studies of permalloy wire-based structures with junctions

IEEE Transactions on Magnetics
January 2000

Magnetization reversal in mesoscopic Ni/sub 80/Fe/sub 20/ wires: a magnetic domain laun...

IEEE Transactions on Magnetics
January 2000

Spin-polarized electron transport processes at the ferromagnet/semiconductor interface

IEEE Transactions on Magnetics
January 2000

Domain wall trapping probed by magnetoresistance and magnetic force microscopy in submi...

Journal of Applied Physics
April 1999

Easy-axis transition in epitaxial face-centered-cubic Ni80Fe20/Ni/Cu(100)

Journal of Applied Physics
April 1999

Spin-dependent electron transport at the ferromagnet/semiconductor interface

Journal of Applied Physics
April 1999

Effect of junction geometry on switching field and reversal behavior in permalloy wires

IEEE Transactions on Magnetics
January 1999

Influence of lateral geometry on magnetoresistance and magnetisation reversal in Ni/sub...

IEEE Transactions on Magnetics
January 1999

Magnetic domain evolution in permalloy mesoscopic dots

IEEE Transactions on Magnetics
January 1999

Magnetic domain evolution in permalloy mesoscopic dots

January 1999

Magnetization reversal and magnetic anisotropy in Co network nanostructures

IEEE Transactions on Magnetics
January 1999

Pseudo-Hall effect and anisotropic magnetoresistance in a micron-scale Ni/sub 80/Fe/sub...

IEEE Transactions on Magnetics
January 1999

Spin dependent electron transport through the ferromagnet/semiconductor interface induc...

January 1999

Spin-dependent electron transport through the ferromagnet/semiconductor interface induc...

IEEE Transactions on Magnetics
January 1999

Magnetic properties of martensite in Fe-Ni alloy measured by means of scanning probe mi...

Journal of Magnetism and Magnetic Materials
January 1998

Micromagnetic configurations of martensite in Fe-Ni alloys

Journal of Applied Physics
April 1997

Influence of crystalline structure on micromagnetic domain formation