SPECIFIC-HEAT ANOMALIES IN LA2-XMXCUO4(M = BA, SR, X = 0.09, 0.12, 0.15) NEAR 70 AND 100K

被引：6

作者：

WRIGHT, DA ^{[1
]}

EMERSON, JP ^{[1
]}

WOODFIELD, BF ^{[1
]}

FISHER, RA ^{[1
]}

PHILLIPS, NE ^{[1
]}

CRAWFORD, MK ^{[1
]}

MCCARRON, EM ^{[1
]}

机构：

[1] DUPONT CO,WILMINGTON,DE 19880

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91917-S

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Specific heat measurements show, for LMCO [M = B(Ba), S(Sr); x = 0.09, 0.12, 0.15], hysteresis and anomalous behavior in the 85-125K region and, for LBCO(0.12) and LSCO(0.09), similar magnetic field-dependent anomalies near 70K. Neutron and x-ray studies by others have shown the existence of an orthorhombic-tetragonal transition for LBCO near 70K but gave no indication of structural transitions in the other cases. The occurrence of transitions, and their x-dependence, in these materials is of interest for the possibility of its connection with the x-dependence of superconducting properties including the isotope effect.

引用

页码：1387 / 1388

页数：2

共 8 条

[1] STRUCTURAL PHASE-TRANSFORMATIONS AND SUPERCONDUCTIVITY IN LA2-XBAXCUO4 [J].