Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh

Hong, Jeongmin; Yang, Tiannan; N’Diaye, Alpha; Bokor, Jeffrey; You, Long

doi:10.3390/nano9040574

Title: Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh

Abstract

FeRh is a unique alloy which shows temperature dependent phase transition magnetic properties. The lattice parameter (a) of this CsCl-type (B2) structure is 4.1712 Å. It undergoes a first order transition from antiferromagnetic (AFM) to ferromagnetic (FM) order at around 370K and hysteretic behavior while cooling and heating. This meta-magnetic transition of FeRh is accompanied by an isotropic expansion in the unit cell volume, which indicates strong coupling between magnetic and structural properties of FeRh. Consequently, the magnetic and transport properties, such as magnetoresistance (MR), are changed during the transition. Due to its unique thermo-magnetic behaviors, FeRh is very important for future spintronic devices. The structure could be applicable for MR devices such as memory, sensors, and many other applications. It is critical to understand how to systematically influence phase transition of FeRh from naturally applied strains. Here, we investigate magnetic properties of FeRh in different strain environments induced by the substrates with different lattice parameters. The study was performed using synchrotron radiation, temperature dependent magnetometry, and magnetic scanning probe microscopy in addition to Landau theory calculations. We found that the naturally induced strains could modulate the magnetic phase locally and globally. The presence of the segments from the nucleationmore »« less

Authors:

Hong, Jeongmin ^[1]; Yang, Tiannan ^[2]; N’Diaye, Alpha ^[3]; Bokor, Jeffrey ^[4];

^[1]

Huazhong Univ. of Science and Technology, Wuhan (China)
Pennsylvania State Univ., University Park, PA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Univ. of California, Berkeley, CA (United States)

Publication Date:: Tue Apr 09 00:00:00 EDT 2019

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC)

OSTI Identifier:: 1571992

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Nanomaterials

Additional Journal Information:: Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 2079-4991

Publisher:: MDPI

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; mixed states of FeRh; natural strains; strain modulation; FeRh; Phase Change; PC-memory

Citation Formats


                    Hong, Jeongmin, Yang, Tiannan, N’Diaye, Alpha, Bokor, Jeffrey, and You, Long. Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh.  United States: N. p., 2019. 
Web.  doi:10.3390/nano9040574.

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                    Hong, Jeongmin, Yang, Tiannan, N’Diaye, Alpha, Bokor, Jeffrey, & You, Long. Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh.  United States.  https://doi.org/10.3390/nano9040574

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                    Hong, Jeongmin, Yang, Tiannan, N’Diaye, Alpha, Bokor, Jeffrey, and You, Long. Tue .  
"Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh".  United States.  https://doi.org/10.3390/nano9040574.  https://www.osti.gov/servlets/purl/1571992.

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@article{osti_1571992,

  title        = {Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh},

  author       = {Hong, Jeongmin and Yang, Tiannan and N’Diaye, Alpha and Bokor, Jeffrey and You, Long},

  abstractNote = {FeRh is a unique alloy which shows temperature dependent phase transition magnetic properties. The lattice parameter (a) of this CsCl-type (B2) structure is 4.1712 Å. It undergoes a first order transition from antiferromagnetic (AFM) to ferromagnetic (FM) order at around 370K and hysteretic behavior while cooling and heating. This meta-magnetic transition of FeRh is accompanied by an isotropic expansion in the unit cell volume, which indicates strong coupling between magnetic and structural properties of FeRh. Consequently, the magnetic and transport properties, such as magnetoresistance (MR), are changed during the transition. Due to its unique thermo-magnetic behaviors, FeRh is very important for future spintronic devices. The structure could be applicable for MR devices such as memory, sensors, and many other applications. It is critical to understand how to systematically influence phase transition of FeRh from naturally applied strains. Here, we investigate magnetic properties of FeRh in different strain environments induced by the substrates with different lattice parameters. The study was performed using synchrotron radiation, temperature dependent magnetometry, and magnetic scanning probe microscopy in addition to Landau theory calculations. We found that the naturally induced strains could modulate the magnetic phase locally and globally. The presence of the segments from the nucleation of the ferromagnetic domains, with a very thin layer in the antiferromagnetic matrix and the domain growth, were observed gradually. Using the systematic phenomena, it could be used for immediate applications in the future generation of phase change random access memory (PC-RAM) devices.},

  doi          = {10.3390/nano9040574},

  journal      = {Nanomaterials},

  number       = 4,

  volume       = 9,

  place        = {United States},

  year         = {Tue Apr 09 00:00:00 EDT 2019},

  month        = {Tue Apr 09 00:00:00 EDT 2019}

}

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Works referenced in this record:

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Theory of strain phase separation and strain spinodal: Applications to ferroelastic and ferroelectric systems
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Xue, Fei; Ji, Yanzhou; Chen, Long-Qing
Acta Materialia, Vol. 133
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Lee, Yeonbae; Liu, Z. Q.; Heron, J. T.
Nature Communications, Vol. 6, Issue 1
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Title: Effects of Interface Induced Natural Strains on Magnetic Properties of FeRh

Abstract

Citation Formats

Temperature and field hysteresis of the antiferromagnetic-to-ferromagnetic phase transition in epitaxial FeRh films journal, December 2005

Mechanism of the Ferrimagnetic to Antiferromagnetic Transition in Mn 2 − x Cr x Sb journal, May 1964

Room-temperature antiferromagnetic memory resistor journal, January 2014

Instability of the rhodium magnetic moment as the origin of the metamagnetic phase transition in α − FeRh journal, February 2003

Anomalously high entropy change in FeRh alloy journal, February 1996

Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films journal, October 2017

Large resistivity modulation in mixed-phase metallic systems journal, January 2015

Model of Exchange-Inversion Magnetization journal, October 1960

Interface-induced phenomena in magnetism journal, June 2017

Theory of strain phase separation and strain spinodal: Applications to ferroelastic and ferroelectric systems journal, July 2017

Lattice Parameter Change of FeRh Alloys due to Antiferromagnetic-Ferromagnetic Transformation journal, January 1967

Antiferromagnetic-ferromagnetic phase transition in FeRh probed by x-ray magnetic circular dichroism journal, May 2008

Large resistivity modulation in mixed-phase metallic systems text, January 2015

Lattice Parameter Change of FeRh Alloys due to Antiferromagnetic-Ferromagnetic Transformation journal, January 1967

Theory of strain phase separation and strain spinodal: Applications to ferroelastic and ferroelectric systems journal, July 2017

Large resistivity modulation in mixed-phase metallic systems journal, January 2015

Anomalously high entropy change in FeRh alloy journal, February 1996

Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films journal, October 2017

Antiferromagnetic-ferromagnetic transition in FeRh journal, August 1992

Room-temperature antiferromagnetic memory resistor text, January 2015

Temperature and field hysteresis of the antiferromagnetic-to-ferromagnetic phase transition in epitaxial FeRh films
journal, December 2005

Mechanism of the Ferrimagnetic to Antiferromagnetic Transition in ${Mn}_{2 - x} {Cr}_{x} Sb$
journal, May 1964

Room-temperature antiferromagnetic memory resistor
journal, January 2014

Instability of the rhodium magnetic moment as the origin of the metamagnetic phase transition in $α - FeRh$
journal, February 2003

Anomalously high entropy change in FeRh alloy
journal, February 1996

Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films
journal, October 2017

Large resistivity modulation in mixed-phase metallic systems
journal, January 2015

Model of Exchange-Inversion Magnetization
journal, October 1960

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journal, June 2017

Theory of strain phase separation and strain spinodal: Applications to ferroelastic and ferroelectric systems
journal, July 2017

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journal, January 1967

Antiferromagnetic-ferromagnetic phase transition in FeRh probed by x-ray magnetic circular dichroism
journal, May 2008

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text, January 2015

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journal, January 1967

Theory of strain phase separation and strain spinodal: Applications to ferroelastic and ferroelectric systems
journal, July 2017

Large resistivity modulation in mixed-phase metallic systems
journal, January 2015

Anomalously high entropy change in FeRh alloy
journal, February 1996

Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films
journal, October 2017

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