DEFECTS AND THE THERMAL-CONDUCTIVITY OF YBA2CU3O7-DELTA AND YBA2CU4O8

被引：0
|
作者：
ANDERSSON, BM
SUNDQVIST, B
机构：
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 195卷 / 1-2期
关键词：
D O I：
10.1016/0925-8388(93)90823-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present below the first measured data for the thermal diffusivity and the thermal conductivity, lambda, of dense, sintered ceramic YBa2Cu4O8 (1-2-4) as a function of temperature T between 40 and 300 K. At 300 K, lambda is 6.3 Wm-1 K-1, increasing with decreasing T to about 9.5 Wm-1 K-1 near T(C). This T dependence is much stronger than in YBa2Cu3O7-delta (I -2-3). Only a very small enhancement is observed in lambda below T(C). As in 1-2-3, lambda is mainly limited by phonon scattering by defects.
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页码：655 / 658
页数：4
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