SYNTHESIS AND SUPERCONDUCTIVITY OF A NEW 1222-TYPE T1-BASED LAYERED CUPRATE (T1, NB) SR2(ND, CE)2CU2OZ

被引：13
作者：
CHEN, ZY
TANG, YQ
LI, YF
PEDERSON, DO
SHENG, ZZ
机构：
[1] UNIV SCI & TECHNOL CHINA, DEPT APPL CHEM, ANHUI 230026, PEOPLES R CHINA
[2] E CHINA INST CHEM TECHNOL, CTR ANAL & RES, SHANGHAI 200237, PEOPLES R CHINA
来源：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1993年 / 90卷 / 01期
关键词：
D O I：
10.1007/BF01321028
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Synthesis and superconductivity of a new 1222-type layered cuprate (Tl1-xNbx) Sr2(Nd1-yCey)2Cu2Oz have been studied. The structure of this cuprate is directly related to that of Nb-1222 NbSr2(Nd, Ce)2Cu2Oz with tetragonal body-center lattice. Partial substitution of Tl for Nb in Nb-1222 phase improves its superconductivity. (Tl1-xNbx) Sr2(Nd0.75Ce0.25)2Cu2Oz samples prepared by the typical procedure exhibit superconductivity with T(c) of 30-40 K. Effects of Tl and Nb on superconductivity of this cuprate are briefly discussed.
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页码：19 / 22
页数：4
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