SPECIFIC-HEAT OF THE HIGH-TC SUPERCONDUCTORS BI2SR2CA1-1CU1O21+4, BI2SR2CA2-1CU2O22+4, BI2SR2CA3-1CU3O23+4 FROM 0.4 TO 6 K

被引：3

作者：

COLLOCOTT, SJ

DRIVER, R

ANDRIKIDIS, C

机构：

[1] CSIRO, Division of Applied Physics, Lindfield

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80250-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Specific heat data, Cp, in the range 0.4 to 6 K for a polycrystalline specimen of Bi2Sr2Can−1CunO2n+4, n = 1, are reported and compared to specimens with n = 2 and 3. All specimens exhibit an upturn in Cp/T, which is least pronounced in the n = 1 specimen. The coefficient of the linear term, γ0 shows considerable variation from specimen to specimen, and ranges from 0 mJ/mol K2 to 3.2 mJ/mol K2 for n = 3 and 1, respectively. It would seem that γ0 is extrinsic in origin. Values obtained for the Debye temperature, θ0D, are 220 K, 246 K and 274 K for n = 1, 2 and 3, respectively. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：1329 / 1330

页数：2

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