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Title: Anisotropic behavior of exchange bias effect in tensile-deformed Pt{sub 3}Fe single crystal

Abstract

Plastic strain in Pt{sub 3}Fe causes changes in the atomic arrangement around the (111) glide plane and induces ferromagnetism even at room temperature. We have performed detailed magnetization measurements on a Pt{sub 3}Fe single crystal with plastic strains of 11.6% under magnetic fields in various directions with respect to the [100] strain axis in order to elucidate the reversal mechanism of induced ferromagnetic domains. We observed that by decreasing the angle between the magnetization direction and strain axis, hysteresis loops are strongly sheared, which is associated with a large increase in coercivity. We also observed that an exchange bias effect appears for all field orientations, but the exchange field maximizes for an intermediate field direction. On the other hand, both phenomena are insensitive to magnetic fields perpendicular to the [100] strain axis. These observations were explained by a single-domain model with uniaxial anisotropy along the [100] strain axis.

Authors:
;  [1]
  1. Department of Materials Science and Engineering, Faculty of Engineering, Iwate University, Ueda 4-3-5, Morioka 020-8551 (Japan)
Publication Date:
OSTI Identifier:
22410056
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COERCIVE FORCE; CRYSTAL STRUCTURE; DOMAIN STRUCTURE; FERROMAGNETISM; HYSTERESIS; INTERMETALLIC COMPOUNDS; IRON; MAGNETIC FIELDS; MAGNETIZATION; MONOCRYSTALS; ORIENTATION; PLASTICITY; PLATINUM; STRAINS; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Kobayashi, Satoru, E-mail: koba@iwate-u.ac.jp, and Morita, Ryo. Anisotropic behavior of exchange bias effect in tensile-deformed Pt{sub 3}Fe single crystal. United States: N. p., 2015. Web. doi:10.1063/1.4914877.
Kobayashi, Satoru, E-mail: koba@iwate-u.ac.jp, & Morita, Ryo. Anisotropic behavior of exchange bias effect in tensile-deformed Pt{sub 3}Fe single crystal. United States. doi:10.1063/1.4914877.
Kobayashi, Satoru, E-mail: koba@iwate-u.ac.jp, and Morita, Ryo. Thu . "Anisotropic behavior of exchange bias effect in tensile-deformed Pt{sub 3}Fe single crystal". United States. doi:10.1063/1.4914877.
@article{osti_22410056,
title = {Anisotropic behavior of exchange bias effect in tensile-deformed Pt{sub 3}Fe single crystal},
author = {Kobayashi, Satoru, E-mail: koba@iwate-u.ac.jp and Morita, Ryo},
abstractNote = {Plastic strain in Pt{sub 3}Fe causes changes in the atomic arrangement around the (111) glide plane and induces ferromagnetism even at room temperature. We have performed detailed magnetization measurements on a Pt{sub 3}Fe single crystal with plastic strains of 11.6% under magnetic fields in various directions with respect to the [100] strain axis in order to elucidate the reversal mechanism of induced ferromagnetic domains. We observed that by decreasing the angle between the magnetization direction and strain axis, hysteresis loops are strongly sheared, which is associated with a large increase in coercivity. We also observed that an exchange bias effect appears for all field orientations, but the exchange field maximizes for an intermediate field direction. On the other hand, both phenomena are insensitive to magnetic fields perpendicular to the [100] strain axis. These observations were explained by a single-domain model with uniaxial anisotropy along the [100] strain axis.},
doi = {10.1063/1.4914877},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}