レーザアブレーション法によるガーネット3層膜の作製とその磁気光学特性

概要

論文の詳細を見る
Tri-layered films composed of magnetic garnet Bi, Ge, Co:DyIG, highly Ca-substituted Bi:DyIG, and Bi, Ga:DyIG layers were deposited by the pulsed laser ablation(PLA)method, amd their magbeto-optical properties were investigated. The first and third magnetic layers in the tri-layerd film showed the different Faraday rotation apectrum in the short-wavelength region from 400nm to 700nm. The Faraday rotetion of the Bi, Ge, Co:DyIG, and Bi, Ge, Ca:DyIG films had maximum values for wavelength of around 435nm and 490nm, respectivelly, The coercivity(H_c)and Faraday rotation of the Bi_<0.31>Dy_<3.0>Ge_<0.32>Co_<0.36>Fe_<0.41>O_<12> film showed nonlinear dependence on the annealing temperature(T_a), and H_c reached a value of 7 kOe at T_a=860℃. The same film annealed at T_a=880℃ showed a compensation temperature near room temperature.
社団法人日本磁気学会の論文
1998-04-15