[22p-E205-1~16] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

[22p-E205-13] Magnetic properties of (Bi,A)(Fe_1-xCo_x)O₃ (A = Ca, Sr, Ba) multiferroic thin films and consideration on the origin of their magnetic properties

Takumi Ozeki¹, Riku Suzuki¹, Genta Egawa¹, 〇Satoru Yoshimura¹ (1.Akita Univ.)

Keywords:Multiferroic thin films, Saturation magnetization, Perpendicular magnetic anisotropy

For the purpose of deveroping for multiferroic thin films with excellent magnetic properties, we investigated Co substitution of Fe sites in (Bi_1-xA_x)FeO₃ (A = Ca,Sr,Ba) thin films. As a result, Co substitution up to 20 % increases saturation magnetization, perpendicular anisotropy, and magnetic Kerr effect, and in (Bi_0.6Ba_0.4)(Fe_0.8Co_0.2)O₃ thin films, M_s = 95 emu/cm³, H_c⊥/H_c// = 1.1, θ_k = 0.21° were obtained.