Strain control of the Néel vector in Mn-based antiferromagnets
Abstract
Control of the Néel vector in antiferromagnetic (AFM) materials is one of the challenges preventing their use as active device components. Several methods have been investigated such as exchange bias, electric current, and spin injection, but little is known about strain-mediated anisotropy. This study of the AFM L10-type MnX alloys MnIr, MnRh, MnNi, MnPd, and MnPt shows that a small amount of strain effectively rotates the direction of the Néel vector by 90° for all of the materials. For MnIr, MnRh, MnNi, and MnPd, the Néel vector rotates within the basal plane. For MnPt, the Néel vector rotates from out-of-plane to in-plane under tensile strain. The effectiveness of strain control is quantified by a metric of efficiency and by direct calculation of the magnetostriction coefficients. The values of the magnetostriction coefficients are comparable with those from ferromagnetic materials. Finally, these results indicate that strain is a mechanism that can be exploited for control of the Néel vectors in this family of antiferromagnets.
- Authors:
-
- Univ. of California, Riverside, CA (United States)
- Univ. of California, Los Angeles, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, Riverside, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO); National Science Foundation (NSF)
- OSTI Identifier:
- 1611918
- Alternate Identifier(s):
- OSTI ID: 1506543
- Grant/Contract Number:
- SC0012670; W911NF-17-0364; ACI-1548562
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 14; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; physics
Citation Formats
Park, In Jun, Lee, Taehwan, Das, Protik, Debnath, Bishwajit, Carman, Greg P., and Lake, Roger K. Strain control of the Néel vector in Mn-based antiferromagnets. United States: N. p., 2019.
Web. doi:10.1063/1.5093701.
Park, In Jun, Lee, Taehwan, Das, Protik, Debnath, Bishwajit, Carman, Greg P., & Lake, Roger K. Strain control of the Néel vector in Mn-based antiferromagnets. United States. https://doi.org/10.1063/1.5093701
Park, In Jun, Lee, Taehwan, Das, Protik, Debnath, Bishwajit, Carman, Greg P., and Lake, Roger K. Thu .
"Strain control of the Néel vector in Mn-based antiferromagnets". United States. https://doi.org/10.1063/1.5093701. https://www.osti.gov/servlets/purl/1611918.
@article{osti_1611918,
title = {Strain control of the Néel vector in Mn-based antiferromagnets},
author = {Park, In Jun and Lee, Taehwan and Das, Protik and Debnath, Bishwajit and Carman, Greg P. and Lake, Roger K.},
abstractNote = {Control of the Néel vector in antiferromagnetic (AFM) materials is one of the challenges preventing their use as active device components. Several methods have been investigated such as exchange bias, electric current, and spin injection, but little is known about strain-mediated anisotropy. This study of the AFM L10-type MnX alloys MnIr, MnRh, MnNi, MnPd, and MnPt shows that a small amount of strain effectively rotates the direction of the Néel vector by 90° for all of the materials. For MnIr, MnRh, MnNi, and MnPd, the Néel vector rotates within the basal plane. For MnPt, the Néel vector rotates from out-of-plane to in-plane under tensile strain. The effectiveness of strain control is quantified by a metric of efficiency and by direct calculation of the magnetostriction coefficients. The values of the magnetostriction coefficients are comparable with those from ferromagnetic materials. Finally, these results indicate that strain is a mechanism that can be exploited for control of the Néel vectors in this family of antiferromagnets.},
doi = {10.1063/1.5093701},
journal = {Applied Physics Letters},
number = 14,
volume = 114,
place = {United States},
year = {Thu Apr 11 00:00:00 EDT 2019},
month = {Thu Apr 11 00:00:00 EDT 2019}
}
Web of Science
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