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

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
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
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