1. Magnetic anisotropy in Co and Co-Ni single crystals deformed by cold rolling
- Author
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Migaku Takahashi, Takeshi Anayama, Minoru Takahashi, Tokuo Wakiyama, and Takao Suzuki
- Subjects
Materials science ,Condensed matter physics ,Magnetometer ,Alloy ,Analytical chemistry ,General Physics and Astronomy ,engineering.material ,law.invention ,Magnetic anisotropy ,Crystallography ,law ,engineering ,Physics::Atomic Physics ,Anisotropy ,Magnetoelastic coupling - Abstract
A study of the magnetic anisotropy induced by cold rolling was made for h.c.p. Co and Co‐Ni single crystals containing 10 and 20 at.% Ni, using a torque magnetometer. The observed induced uniaxial anisotropy Kur for Co was found to reach a maximum of −5×105 erg/cm3 at about R=5% (R=rolling reduction), with the easy axis parallel to the rolling direction. For the Co‐10%Ni alloy, a similar dependence of Kur or R was obtained, although the sign of Kur changed from negative to positive at about R=30%. For the Co−20% Ni alloy, the value of Kur was found to increase with R and to be about 4×105 erg/cm3 at R=60%. The results are discussed in terms of magnetoelastic coupling energy and slip‐induced directional order.
- Published
- 1975
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