Affiliations: [a] Department of Materials Science and Engineering,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita,
565-0871, Japan | [b] Department of Superconductivity, Graduate School of
Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656, Japan
Correspondence:
[*]
Present address: Department of Materials Science and
Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan.
Tel./Fax: +81 89 927 9881; E-mail: sakamoto@eng.ehime-u.ac.jp
Abstract: Rearrangement of variants of an Fe-31.2mol%Pd single crystal in the
field-cooling process under the magnetic fields applied along
[001]_{P}, [011]_{P} and
[111]_{P} (P: parent phase) has been investigated by strain
measurement and optical microscope observation. The fraction of the variant,
which lowers the magnetocrystalline anisotropy energy most, becomes almost 100%
by the rearrangement of variants under the magnetic field applied along
[001]_{P}, but does not reach 100% under the magnetic field
applied along [011]_{P}. On the other hand, the
rearrangement of variants hardly occurs under the magnetic field applied along
[111]_{P}. Influence of the field direction on rearrangement
of variants described above can be evaluated quantitatively by using the
magnetic shear stress τ_{mag} and the shear stress
required for rearrangement of variants τ_{req}.
