ANISOTROPIC THERMAL-DIFFUSIVITY AND CONDUCTIVITY OF YBCO(123) AND YBCO(211) MIXED-CRYSTALS .1.

被引：54

作者：

FUJISHIRO, H ^{[1
]}

IKEBE, M ^{[1
]}

NAITO, T ^{[1
]}

NOTO, K ^{[1
]}

KOHAYASHI, S ^{[1
]}

YOSHIZAWA, S ^{[1
]}

机构：

[1] DOWA MIN CO LTD,CENT RES LAB,HACHIOJI,TOKYO 192,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1994年 / 33卷 / 9A期

关键词：

Y-BA-CU-O SUPERCONDUCTOR; THERMAL DIFFUSIVITY; THERMAL CONDUCTIVITY; SPECIFIC HEAT; MIXED CRYSTAL;

D O I：

10.1143/JJAP.33.4965

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The anisotropic thermal diffusivity alpha of the highly c-axis-oriented Y-Ba-Cu-O bulk superconducting crystals has been measured quasi-simultaneously with the thermal conductivity kappa. The estimated values of the specific heat C by use of alpha and kappa values parallel and perpendicular to the c-direction agreed with each other. In these crystals prepared by the modified melt texture growth (MMTG) method, fine Y2BaCuO5 particles are dispersed in the YBa2Cu3O7-x superconducting matrix phase. Based on a simple model, the thermal diffusivity and the specific heat of the YBa2Cu3O7-x matrix phase are separated using independently measured data of a Y2BaCuO5 polycrystal. The influence of Y2BaCuO5 particles on the thermal properties of the mixed crystals is discussed.

引用

页码：4965 / 4970

页数：6

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