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Effect of Magnetic Ordering on the Thermoelectric Power of Concentrated Au(Fe) Alloys

 

作者: V. Cannella,   J. A. Mydosh,   M. P. Kawatra,  

 

期刊: Journal of Applied Physics  (AIP Available online 1970)
卷期: Volume 41, issue 3  

页码: 1421-1422

 

ISSN:0021-8979

 

年代: 1970

 

DOI:10.1063/1.1658971

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We have measured the temperature dependence of the thermoelectric powerS(T)for eight samples of Au(Fe) alloys with concentrationscup to 22 at.% Fe in the temperature range 4°–300°K.S(T)for all samples is always negative and shows a maximum in |S| between 80° and 110°K. For samples withc>12% Fe there are well‐defined transitions in the behavior ofS(T)at temperatures agreeing with the ordering temperatures as determined by other measurements, whereas no distinct transitions are observed forc<12%. These two concentration groups also differ in the concentration dependence of the magnitude ofS(T)and in the temperature dependence of the position of the maximum of |S|. At low temperatures we find thatS(T)follows a behavior:S=AT3/2+BT5/2which suggests a magnon drag contribution toS(T).

 

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