Domain configurations in the giant magnetostrictive Tb x Ho1-x Fe1.9 system in different easy axis regimes

Simon Busbridge, A.R. Piercy

Research output: Contribution to journalArticle

Abstract

Domains have been observed in Tb x Ho1-x Fe1.9 over the composition range 0<x<0.2 and temperature range -10 to +100 °C, as a function of bias field. In the region where this system is <100> easy, the movement of {110} 90° domain walls is shown to be responsible for the generation of negative magnetostrain, with increasing bias field. When <111> is easy, 71° domain walls in {110} have been identified with a bias field applied. For x=0.1, at remanence, 180° domain walls rotate smoothly with increasing temperature, from {100} when <100> is easy to {110} when <111> is easy. The presence of a bias field, at any temperature, brings out {110} walls which are 90° walls in the <100> easy, low temperature, regime and 71° walls in the <111> easy, high temperature, regime. At intermediate temperatures these walls remain in {110} with the magnetization in directions between <100> and <111>. These domain observations are shown to be consistent with theoretical magnetomechanical behavior based on a <1uu>, 0<u<1, transition in easy axis.
Original languageEnglish
Pages (from-to)5354-5356
Number of pages3
JournalJournal of Applied Physics
Volume73
Issue number10
Publication statusPublished - 1 Jan 1993

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title = "Domain configurations in the giant magnetostrictive Tb x Ho1-x Fe1.9 system in different easy axis regimes",
abstract = "Domains have been observed in Tb x Ho1-x Fe1.9 over the composition range 0 easy, the movement of {110} 90° domain walls is shown to be responsible for the generation of negative magnetostrain, with increasing bias field. When <111> is easy, 71° domain walls in {110} have been identified with a bias field applied. For x=0.1, at remanence, 180° domain walls rotate smoothly with increasing temperature, from {100} when <100> is easy to {110} when <111> is easy. The presence of a bias field, at any temperature, brings out {110} walls which are 90° walls in the <100> easy, low temperature, regime and 71° walls in the <111> easy, high temperature, regime. At intermediate temperatures these walls remain in {110} with the magnetization in directions between <100> and <111>. These domain observations are shown to be consistent with theoretical magnetomechanical behavior based on a <1uu>, 0<u<1, transition in easy axis.",
author = "Simon Busbridge and A.R. Piercy",
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Domain configurations in the giant magnetostrictive Tb x Ho1-x Fe1.9 system in different easy axis regimes. / Busbridge, Simon; Piercy, A.R.

In: Journal of Applied Physics, Vol. 73, No. 10, 01.01.1993, p. 5354-5356.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Domain configurations in the giant magnetostrictive Tb x Ho1-x Fe1.9 system in different easy axis regimes

AU - Busbridge, Simon

AU - Piercy, A.R.

PY - 1993/1/1

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N2 - Domains have been observed in Tb x Ho1-x Fe1.9 over the composition range 0 easy, the movement of {110} 90° domain walls is shown to be responsible for the generation of negative magnetostrain, with increasing bias field. When <111> is easy, 71° domain walls in {110} have been identified with a bias field applied. For x=0.1, at remanence, 180° domain walls rotate smoothly with increasing temperature, from {100} when <100> is easy to {110} when <111> is easy. The presence of a bias field, at any temperature, brings out {110} walls which are 90° walls in the <100> easy, low temperature, regime and 71° walls in the <111> easy, high temperature, regime. At intermediate temperatures these walls remain in {110} with the magnetization in directions between <100> and <111>. These domain observations are shown to be consistent with theoretical magnetomechanical behavior based on a <1uu>, 0<u<1, transition in easy axis.

AB - Domains have been observed in Tb x Ho1-x Fe1.9 over the composition range 0 easy, the movement of {110} 90° domain walls is shown to be responsible for the generation of negative magnetostrain, with increasing bias field. When <111> is easy, 71° domain walls in {110} have been identified with a bias field applied. For x=0.1, at remanence, 180° domain walls rotate smoothly with increasing temperature, from {100} when <100> is easy to {110} when <111> is easy. The presence of a bias field, at any temperature, brings out {110} walls which are 90° walls in the <100> easy, low temperature, regime and 71° walls in the <111> easy, high temperature, regime. At intermediate temperatures these walls remain in {110} with the magnetization in directions between <100> and <111>. These domain observations are shown to be consistent with theoretical magnetomechanical behavior based on a <1uu>, 0<u<1, transition in easy axis.

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