open access

https://hdl.handle.net/2115/48152

First-Principles Calculations of Spinodal Ordering Temperature and Diffuse Intensity Scattering Spectrum for Fe-Pt System

英語

phase diagram

2011-12

ASM International

Journal of Phase Equilibria and Diffusion

32(6)

537-542

First-principles calculations are performed to derive a L1_[0]-disorder phase diagram, spinodal ordering temperature and short-range-order diffuse-intensity spectrum for the Fe-Pt system. L1_[0]-disorder transition is confirmed to be of the first order by both the temperature dependence of the long-range-order parameter and the large separation between the transition temperature and spinodal ordering temperature. Short-range-order diffuse-intensity maximum appears at <100> which is intensified as the spinodal-ordering temperature is approached. The consistency among all these results supports the reliability of the description of the cluster variation free energy used for this study.

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Copyright 2011 ASM International. This paper was published in Journal of Phase Equilibria and Diffusion, Vol. 32, No. 6, pp. 537-542 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.

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