高T_c超导体Y_1Ba_2Cu_3O_(7—■)中^(63)Cu核的核磁共振研究  

AN NMR STUDY ON THE ~63Cu IN HIGH T_c SUPERCONDUCTOR Y_1Ba_2Cu_3O_(7-δ)

作　　者：邵倩芬[1] 童捷[1] 沈伊民 胡建国[2] 徐息良[3] 

机构地区：[1]复旦大学分析测试中心 [2]复旦大学材料系 [3]复旦大学化学系

出　　处：《复旦学报（自然科学版）》1991年第2期235-238,共4页Journal of Fudan University：Natural Science

摘　　要：给出了高场(7.05 T)下高T_c超导体Y_1Ba_2Cu_8O_(7-δ)(δ=0.1)的核磁共振(NMR)研究结果。在室温下,测量了自制的Y_1,Ba_2Cu_8O_(7-δ)超导体中^(68)Cu的NMR谱及^(68)Cu的四极共振频率,计算了^(68)Cu核的四极耦合常数C和不对称性系数η,观察到^(68)Cu(I)的NMR谱的分裂。An NMR study on the home-made high T_e superconductor Y_1Ba_2Cu_3O_(7-δ) in highfield(7.05 T) is reported. The NMR spectrum and NQR frequencies of the ^(63)Cu insuperconductor Y_1Ba_2Cu_3O_(7-δ) in room temperature is measured and the quadrupolecoupling constnt C and the asymmetry parametre η of the ^(63)Cu is calculated. In addi-tion, the peak split in Cu(I)-NMR spectrum has been observed.

关 键 词：YBACUO NMR 超导体 铜 核四极共振 

分 类 号：TM262[一般工业技术—材料科学与工程]