@article{oai:tsukuba.repo.nii.ac.jp:00053798,
 author = {喜多, 英治 and KITA, Eiji and 柳原, 英人 and YANAGIHARA, Hideto and Latiff, Hawa and Kishimoto, Mikio and Inoue, Jun-ichiro and Devillers, Thibaut},
 journal = {Journal of Magnetism and Magnetic Materials},
 month = {Nov},
 note = {We investigated on the strain-induced magnetic anisotropy via the Jahn-Teller (JT) distortion of Cu2+ ions and the magnetoelastic coupling of Co2+ ions in Cu1−xCoxFe2O4 particles. The ideal composition for the tetragonalization of (Cu,Co)Fe2O4 is confirmed for x in the range of 0 < x < 0.15. The tetragonally distorted spinel structured (Cu,Co)Fe2O4 particles indicate tetragonal distortion of up to 5.6% as a consequence of the JT effect, and increasing the Co content suppressed the cooperative JT distortion. In-field Mössbauer study revealed a 10% Fe-rich B site due to the anti-site defects. The saturation magnetization increases with x and varies from 26.9 to 36.8 Am2/kg. The coercivity ranges from 68 to 175 kA/m and showed a maximum at x = 0.1. The maximum anisotropy field, Hk estimated from torque measurement is 1590 kA/m (20 kOe), with the magnetic anisotropy constant K = 0.14 M J/m3. The maximum values of Hc and Hk are explained by the mechanism of magnetic anisotropy from both the lattice distortion of Cu2+ and the anisotropy sites of Co2+. We showed that the magnetoelastic theory is applicable qualitatively to explain the large anisotropy obtained in the tetragonally distorted particles.},
 title = {Strain-induced magnetic anisotropy via the Jahn-Teller effect and the magnetoelastic coupling of tetragonally distorted (Cu,Co)Fe2O4 particles},
 volume = {489},
 year = {2019},
 yomi = {キタ, エイジ and ヤナギハラ, ヒデト}
}