首页 | 本学科首页   官方微博 | 高级检索  
     


A universal dependence for thermal conductivity of metals and dilute alloys
Authors:K Balcerek  Cz Marucha  J Rafa?owicz  R Wawryk
Affiliation:(1) Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, Wroclaw 2, Poland
Abstract:A universal curve relating the maximum of thermal conductivity and its respective temperature with the residual electrical resistivity has been proposed for metals and dilute alloys. Based on the equation of that curve, a comparative analysis of selected literature data of thermal conductivity of metals, which have residual electrical resistivity in the range 10–11<rgr0<10–5OHgr. cm, have been performed. Using the data for 33 metals, confirmation of the Wiedemann-Franz law for the impurity componentbeta/T of thermal conductivity was obtained, which means that betath/betaelsim1, wherebeta th andbeta el are the parameters of the electron-lattice defect interaction obtained from measurements of thermal and electrical conductivity, respectively. Examples of the failure of the Wiedemann-Franz law are also presented, exhibiting the values ofbeta th/betael in the range 0.16 to 25. Measurements of thermal conductivity in the range 2 to 20 K and determination of the residual electrical resistivity for the samples of Cd doped with Zn and quenched were performed, resulting in valuesbeta th/betaelsim1.
Keywords:alloys  electrical resistivity  low temperature  metals  thermal conductivity  Wiedemann-Franz law
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号