Exchange bias and exchange spring effects in Fe/CrN bilayers

doi:10.1088/1361-6463/ab6147

Title: Exchange bias and exchange spring effects in Fe/CrN bilayers

Abstract

Here we studied exchange bias and exchange spring effects in magnetic bilayer thin films of Fe and CrN grown by molecular beam epitaxy. First, the relationships between exchange bias, coercivity, and blocking temperature and the Fe and CrN layers thicknesses are studied. Second, the exchange spring effect is observed and studied in all samples. The exchange spring breaks free at critical applied field strengths while creating planar domain walls at lower applied fields. First-principles calculations are performed to understand the magnetic interactions between the Fe and CrN layers at their interfaces. The calculations are key to understanding the experimental observations.

Authors:

^[1]; Meng, Keng-Yuan ^[2]; Ponce-Pérez, Rodrigo ^[3]; Cocoletzi, Gregorio H. ^[4]; Takeuchi, Noboru ^[5]; Foley, Andrew ^[6];

^[2]; Smith, Arthur R. ^[6]

Ohio Univ., Athens, OH (United States); King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia)
The Ohio State Univ., Columbus, OH (United States)
Ohio Univ., Athens, OH (United States); Benemerita Universidad Autónoma de Puebla (BUAP) (Mexico); Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)
Benemerita Universidad Autónoma de Puebla (BUAP) (Mexico)
Ohio Univ., Athens, OH (United States); Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)
Ohio Univ., Athens, OH (United States)

Publication Date:: 2020-01-06

Research Org.:: The Ohio State Univ., Columbus, OH (United States); Ohio Univ., Athens, OH (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Univ. Nacional Autonoma de Mexico (UNAM); CONACyT

OSTI Identifier:: 1594167

Report Number(s):: DOE-OSU-01304
Journal ID: ISSN 0022-3727

Grant/Contract Number:: SC0001304; FG02-06ER46317; IN101019; A1-S-9070; LANCAD-UNAM-DGTIC051

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. D, Applied Physics

Additional Journal Information:: Journal Volume: 53; Journal Issue: 12; Journal ID: ISSN 0022-3727

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; antiferromagnetic CrN; exchange bias; exchange spring.

Citation Formats


                    Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, and Smith, Arthur R. Exchange bias and exchange spring effects in Fe/CrN bilayers.  United States: N. p., 2020. 
        Web.  doi:10.1088/1361-6463/ab6147.

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                    Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, & Smith, Arthur R. Exchange bias and exchange spring effects in Fe/CrN bilayers.  United States.  doi:10.1088/1361-6463/ab6147.

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                    Alam, Khan, Meng, Keng-Yuan, Ponce-Pérez, Rodrigo, Cocoletzi, Gregorio H., Takeuchi, Noboru, Foley, Andrew, Yang, Fengyuan, and Smith, Arthur R. Mon .  
        "Exchange bias and exchange spring effects in Fe/CrN bilayers".  United States.  doi:10.1088/1361-6463/ab6147.  https://www.osti.gov/servlets/purl/1594167.

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@article{osti_1594167,

  title        = {Exchange bias and exchange spring effects in Fe/CrN bilayers},

  author       = {Alam, Khan and Meng, Keng-Yuan and Ponce-Pérez, Rodrigo and Cocoletzi, Gregorio H. and Takeuchi, Noboru and Foley, Andrew and Yang, Fengyuan and Smith, Arthur R.},

  abstractNote = {Here we studied exchange bias and exchange spring effects in magnetic bilayer thin films of Fe and CrN grown by molecular beam epitaxy. First, the relationships between exchange bias, coercivity, and blocking temperature and the Fe and CrN layers thicknesses are studied. Second, the exchange spring effect is observed and studied in all samples. The exchange spring breaks free at critical applied field strengths while creating planar domain walls at lower applied fields. First-principles calculations are performed to understand the magnetic interactions between the Fe and CrN layers at their interfaces. The calculations are key to understanding the experimental observations.},

  doi          = {10.1088/1361-6463/ab6147},

  journal      = {Journal of Physics. D, Applied Physics},

  number       = 12,

  volume       = 53,

  place        = {United States},

  year         = {2020},

  month        = {1}

}

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DOI: 10.1088/1361-6463/ab6147

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Title: Exchange bias and exchange spring effects in Fe/CrN bilayers

Abstract

Citation Formats

Pinpointing Chiral Structures with Front-Back Polarized Neutron Reflectometry journal, January 2002

Fabrication and wafer testing of barber-pole and exchange-biased narrow-track MR sensors journal, November 1982

Thickness-dependent coercive mechanisms in exchange-biased bilayers journal, January 2002

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Structural, electronic and magnetic properties of Mn3N2(0 0 1) surfaces journal, November 2015

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Special points for Brillouin-zone integrations journal, June 1976

Inverse Current-Induced Magnetization Switching in Magnetic Tunnel Junctions with Fe 4 N Free Layer journal, October 2010

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials journal, September 2009

Native Gallium Adatoms Discovered on Atomically-Smooth Gallium Nitride Surfaces at Low Temperature journal, February 2015

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First-principles calculations of the electronic structure and spectra of strongly correlated systems: the LDA + U method journal, January 1997

Temperature dependence of the exchange-bias field of ferromagnetic layers coupled with antiferromagnetic layers journal, December 2000

The exchange-spring magnet: a new material principle for permanent magnets journal, July 1991

New Magnetic Anisotropy journal, February 1957

Coercivity Enhancement in Exchange Biased Systems Driven by Interfacial Magnetic Frustration journal, April 2000

Soft self-consistent pseudopotentials in a generalized eigenvalue formalism journal, April 1990

Exchange bias journal, February 1999

Structural and magnetic phase transitions in chromium nitride thin films grown by rf nitrogen plasma molecular beam epitaxy journal, September 2017

Self-interaction correction to density-functional approximations for many-electron systems journal, May 1981

High-precision sampling for Brillouin-zone integration in metals journal, August 1989

Coercivity in exchange-bias bilayers journal, January 2001

Giant perpendicular exchange bias with antiferromagnetic MnN journal, May 2017

Inverse tunnel magnetoresistance in magnetic tunnel junctions with an Fe4N electrode journal, July 2007

Exchange-spring behavior in epitaxial hard/soft magnetic bilayers journal, November 1998

Spring magnet behavior in DyFe 2 / Y F e 2 Laves phases superlattices journal, July 2000

Structural, electronic, and magnetic properties of the CrN (0 0 1) surface: First-principles studies journal, October 2018

Giant magnetoresistive in soft ferromagnetic multilayers journal, January 1991

The effect of growth parameters on CrN thin films grown by molecular beam epitaxy journal, October 2011

Linear response approach to the calculation of the effective interaction parameters in the LDA + U method journal, January 2005

Pinpointing Chiral Structures with Front-Back Polarized Neutron Reflectometry
journal, January 2002

Fabrication and wafer testing of barber-pole and exchange-biased narrow-track MR sensors
journal, November 1982

Thickness-dependent coercive mechanisms in exchange-biased bilayers
journal, January 2002

Creation of an Antiferromagnetic Exchange Spring
journal, June 2004

Structural, electronic and magnetic properties of Mn3N2(0 0 1) surfaces
journal, November 2015

Structure, hardness and thermal stability of nanolayered TiN/CrN multilayer coatings
journal, November 2003

Special points for Brillouin-zone integrations
journal, June 1976

Inverse Current-Induced Magnetization Switching in Magnetic Tunnel Junctions with Fe 4 N Free Layer
journal, October 2010

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
journal, September 2009

Native Gallium Adatoms Discovered on Atomically-Smooth Gallium Nitride Surfaces at Low Temperature
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Facility for low-temperature spin-polarized-scanning tunneling microscopy studies of magnetic/spintronic materials prepared in situ by nitride molecular beam epitaxy
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First-principles calculations of the electronic structure and spectra of strongly correlated systems: the LDA + U method
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Temperature dependence of the exchange-bias field of ferromagnetic layers coupled with antiferromagnetic layers
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The exchange-spring magnet: a new material principle for permanent magnets
journal, July 1991

New Magnetic Anisotropy
journal, February 1957

Coercivity Enhancement in Exchange Biased Systems Driven by Interfacial Magnetic Frustration
journal, April 2000

Soft self-consistent pseudopotentials in a generalized eigenvalue formalism
journal, April 1990

Exchange bias
journal, February 1999

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journal, May 1981

High-precision sampling for Brillouin-zone integration in metals
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