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Title: The excess free energy due to the composition gradient for ferromagnetic alloys

Abstract

The magnetic free energy for alloy systems contains the magnetic alloying excess free energy that is thermodynamically described by using the magnetic interaction parameter. The authors reveal the statistical meaning of this parameter by using the ising model and Weiss`s molecular field approximation. Ginzburg-Landau-type free energy, which includes the excess free energy of the composition gradient, is often used in order to simulate the phase separation process. Using the magnetic interaction parameter, they estimated the gradient energy due to spatial distribution of ferromagnetic atoms in the alloy. This study made possible the accurate simulation of phase separation in ferromagnetic alloys.

Authors:
;  [1]
  1. Kyoto Univ. (Japan). Dept. of Materials Science and Engineering
Publication Date:
OSTI Identifier:
684403
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 47; Journal Issue: 10; Other Information: PBD: 10 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; FREE ENERGY; FERROMAGNETIC MATERIALS; ALLOYS; PHASE TRANSFORMATIONS; ISING MODEL; CHEMICAL COMPOSITION; SIMULATION

Citation Formats

Ujihara, T., and Osamura, K. The excess free energy due to the composition gradient for ferromagnetic alloys. United States: N. p., 1999. Web. doi:10.1016/S1359-6454(99)00163-9.
Ujihara, T., & Osamura, K. The excess free energy due to the composition gradient for ferromagnetic alloys. United States. doi:10.1016/S1359-6454(99)00163-9.
Ujihara, T., and Osamura, K. Tue . "The excess free energy due to the composition gradient for ferromagnetic alloys". United States. doi:10.1016/S1359-6454(99)00163-9.
@article{osti_684403,
title = {The excess free energy due to the composition gradient for ferromagnetic alloys},
author = {Ujihara, T. and Osamura, K.},
abstractNote = {The magnetic free energy for alloy systems contains the magnetic alloying excess free energy that is thermodynamically described by using the magnetic interaction parameter. The authors reveal the statistical meaning of this parameter by using the ising model and Weiss`s molecular field approximation. Ginzburg-Landau-type free energy, which includes the excess free energy of the composition gradient, is often used in order to simulate the phase separation process. Using the magnetic interaction parameter, they estimated the gradient energy due to spatial distribution of ferromagnetic atoms in the alloy. This study made possible the accurate simulation of phase separation in ferromagnetic alloys.},
doi = {10.1016/S1359-6454(99)00163-9},
journal = {Acta Materialia},
number = 10,
volume = 47,
place = {United States},
year = {1999},
month = {8}
}