[20p-W833-1~18] 11.1 Fundamental properties

[20p-W833-9] Substitution Effects and Crystal Growth in RuGd1222 System

〇Kazuhiro Yamaki¹, Yoshihiro Bamba¹, Akinobu Irie¹ (1.Utsunomiya Univ.)

Keywords:rutheno-cuprate,crystal growth

The samples Ru_1-xSr₂Gd_1.4Ce_0.6Cu_2+xO_10-d (RuGd1222, x = -0.3, 0.0, 0.3, 0.5) were synthesized by solid state reaction and self-flux growth. Cu doping for Ru site suppresses the formation of RuGd1222 phase. The sample (x = 0.0) synthesized by self-flux growth up to 1350 ^oC shows superconductivity at T_c-onset = 30 K.