Estimation of the configurational entropy of fusion
作者:
K. Ohsaka,
E. H. Trinh,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 66,
issue 23
页码: 3123-3125
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.113623
出版商: AIP
数据来源: AIP
摘要:
The entropy of fusion of a metal consists of the configurational and vibrational entropies. A formula is presented to evaluate the configurational entropy by assuming an amorphous phase to be a frozen liquid that has lost the configurational entropy but still maintains the vibrational entropy of the corresponding liquid. The magnitude of the configurational entropy may provide information on the nature of liquid structures. The evaluation requires the enthalpy of the amorphous phase in addition to those of the liquid and crystalline phases. The illustrative evaluation on the Ni24Zr76alloy shows that &Dgr;Sconfis approximately 1kper atom, wherekis the Boltzmann constant, which suggests some degree of clustering of atoms in the liquid. ©1995 American Institute of Physics.
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