MAGNETIC-BEHAVIOR IN PR-CONTAINING TL-BASED AND PB-BASED CUPRATES

被引：16

作者：

KU, HC

LAI, CC

SHIEH, JH

LIOU, JW

WU, CY

HO, JC

机构：

[1] WICHITA STATE UNIV,DEPT PHYS,WICHITA,KS 67208

[2] NATL CHIAO TUNG UNIV,INST ELECTR,HSINCHU 300,TAIWAN

来源：

PHYSICA B | 1994年 / 194卷 / pt 1期

关键词：

D O I：

10.1016/0921-4526(94)90436-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetic ordering among Pr ions occurs at a relatively high temperature of 17 K in PrBa2Cu3O7, but is absent in Pr2CuO4 and Bi2Sr2PrCu2O8 above 1.6 K. This work extends the study of magnetic properties to other Pr-containing cuprates including TlBa2PrCu2O7, (Pb.6Cu.4)Sr2PrCu2O7 and Pb2Sr2PrCu3O8. Low temperature calorimetric and SQUID measurements show broad peaks in C and dchi/dT in all cases. The onset temperatures are near 10 K, while the maxima in C as well as minima in dchi/dT prevail at about 8 to 5 K. The heat capacity data provides additional information concerning the entropy associated with the magnetic anomalies and large contributions seemingly linear with temperature.

引用

页码：213 / 214

页数：2