Journal ArticleDOI
Coherent-Potential Approximation for Disordered Ferromagnetic Binary Alloys
E-Ni Foo,Der-Hsueh Wu +1 more
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TLDR
In this paper, the magnetic properties of spin-textonehalf{} Heisenberg ferromagnetic alloys are calculated using a coherent-potential approximation (CPA) method.Abstract:
The magnetic properties of spin-\textonehalf{} Heisenberg ferromagnetic alloys are calculated. We calculate the spin-wave Green's function in the random-phase approximation and treat the disordered composition-dependent exchange interaction in a coherent-potential approximation (CPA). In the weak-scattering limit, the CPA reproduces the result of the mean-field theory as expected, and in the strong-scattering limit, the CPA predicts such properties as critical concentration, which is beyond the scope of the mean-field theory.read more
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Journal ArticleDOI
The theory and properties of randomly disordered crystals and related physical systems
TL;DR: A review of the methods for determining the behavior of solids whose properties vary randomly at the microscopic level, with principal attention to systems having composition variation on a well-defined structure (random "alloys") can be found in this paper.
Book ChapterDOI
Chapter 6 Amorphous ferromagnets
TL;DR: In this article, the preparation of amorphous metallic solids, the resultant atomic structures, and the experimental methods, which are used to obtain structural information, are described and discussed.
Journal ArticleDOI
Electrical resistivity and Curie temperature of amorphous (FeNi)PC alloys
R. Hasegawa,J.A. Dermon +1 more
TL;DR: In this article, low temperature electrical resistivity and Curie temperature of amorphous (Fe 100− x Ni x ) 75 P 15 C 10 alloys (0⩽ x ⩽50) were studied.
Journal ArticleDOI
Excitations in the dilute Heisenberg ferromagnet using the coherent potential approximation
TL;DR: In this paper, the coherent potential approximation (CPA) has been generalized to describe spin waves in a dilute Heisenberg ferromagnet at T = 0 and the full T matrix of an isolated vacancy in an effective medium is evaluated.
Journal ArticleDOI
Magnetic properties of transition metal‐metalloid glasses
R. C. O'Handley,D. S. Boudreaux +1 more
TL;DR: Magnetic moments and Curie temperatures of several series of metallic glass alloys are presented and analyzed in this paper, where a model emphasizing the effect of the local environment is used to explain the data.