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Wachtman’s equation and temperature dependence of bulk moduli in solids

 

作者: M. L. Nandanpawar,   S. Rajagopalan,  

 

期刊: Journal of Applied Physics  (AIP Available online 1978)
卷期: Volume 49, issue 7  

页码: 3976-3979

 

ISSN:0021-8979

 

年代: 1978

 

DOI:10.1063/1.325408

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Anderson has derived an equation describing the temperature dependence of bulk moduli of oxide solids using the Mie‐Gru¨neisen equation of state. In this paper, we have shown that this equation can be applied to all solids in general, without restricting the applicablity to oxides alone. In our approach, use has been made of the Mie‐Gru¨neisen equation of state and an assumption that the main change in bulk modulus with temperature arises from the associated volume change and the volume changes encountered are small, which is true in many solids. We have estimated the values of bulk moduli of many nonoxide solids like Au, Ag, Cu, Si, PbSe, Mg2Sn, and MgCu2, which agree well with the experimentally determined values. The Debye characteristic temperature, the Gru¨neisen parameter, and the Anderson‐Gru¨neisen parameter have been considered to be temperature dependent.

 

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