SIMULTANEOUS MEASUREMENT OF THERMAL-DIFFUSIVITY AND CONDUCTIVITY APPLIED TO BI-2223 CERAMIC SUPERCONDUCTORS

被引：69
|
作者：
IKEBE, M
FUJISHIRO, H
NAITO, T
NOTO, K
机构：
[1] Department of Materials Science and Technology, Faculty of Engineering, Iwate University, Morioka 020
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 08期
关键词：
THERMAL DIFFUSIVITY; THERMAL CONDUCTIVITY; SPECIFIC HEAT; BI-2223; SUPERCONDUCTOR; PHONON SCATTERING; BRT AND TEWORDT-WOLKHAUSEN THEORY;
D O I：
10.1143/JPSJ.63.3107
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A method to measure the thermal diffusivity alpha and the conductivity kappa under an identical experimental setup has been developed and alpha and kappa of Bi-2223 oxide superconductor have been measured quasi-simultaneously. The results are analyzed on the basis of the BRT and Tewordt-Wolkhausen theory. The simultaneous measurement makes it possible to estimate the specific heat C and the Debye temperature THETA(D), as well as to separate the electron and phonon contributions to the diffusivity. The simultaneous measurement also provides a useful check on the reliability and the consistency of the analyses.
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页码：3107 / 3114
页数：8
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