SPECIFIC-HEAT OF POLYCRYSTALLINE BA0.6K0.4BIO3 FROM 0.5-K TO 20-K

被引：6

作者：

COLLOCOTT, SJ ^{[1
]}

SAVVIDES, N ^{[1
]}

VANCE, ER ^{[1
]}

机构：

[1] AUSTRALIAN NUCL SCI & TECHNOL ORG,ADV MAT PROGRAM,SUTHERLAND 2234,AUSTRALIA

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.42.4794

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Specific-heat, Cp, data from 0.5 to 20 K for a polycrystalline specimen of Ba0.6K0.4BiO3 are reported. In contrast to YBa2Cu3O7-, the Bi-Ca-Sr-Cu-O and Tl-Ca-Ba-Cu-O systems, Ba0.6K0.4BiO3 shows no evidence of an upturn in Cp/T below 2 K. A Debye temperature, FTHETAD0, of 324 4 K is obtained, and it is found that the coefficient of the linear term in the specific heat, 0, is most probably zero, with an upper limit of 0.060 mJ/mol K2. These results are consistent with Ba0.6K0.4BiO3 being a well-behaved BCS superconductor. © 1990 The American Physical Society.

引用

页码：4794 / 4796

页数：3

共 12 条

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