[24a-12G-1~9] 6.3 Oxide electronics

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[24a-12G-6] High field property of metal insulator transition in (Pr_1-yRE_y)_1-xCa_xCoO₃ grown by sol-gel method

〇(D)Kyosuke Sakurai¹, Yuji Tsuchiya¹, Masahiro Tahashi², Hideo Goto², Satoshi Awaji¹ (1.Tohoku univ., 2.Chubu univ.)

Keywords:

Metal insulator transition,perovskite-type cobalt oxide,Sol-gel method

The perovskite-type cobalt oxide (RECoO₃) was synthesized using the sol-gel method, and the high magnetic field characteristics of the metal-insulator (MI) transition temperature (T_MI) were evaluated through electrical resistance measurements up to a magnetic field of 19 T. The T_MI exhibited a parabolic decrease with increasing magnetic field. Higher T_MI values were associated with a smaller second-order coefficient (A) in the magnetic field dependence. We will discuss the application of MI transition materials in quench protection techniques for superconducting magnets.