Journal ArticleDOI
Single-Site Spin Fluctuation Theory of Itinerant-Electron Systems with Narrow Bands. II. Iron and Nickel
TLDR
In this paper, a spin-fluctuation theory was applied to iron and nickel for a discussion of their magnetic and thermodynamical properties at finite temperatures with a slight extension including the effect of charge fields within the steepest-descent approximation.Abstract:
A spin-fluctuation theory developed previously by the present author is applied to iron and nickel for a discussion of their magnetic and thermodynamical properties at finite temperatures with a slight extension including the effect of charge fields within the steepest-descent approximation. The Curie temperature, the average magnetization, the amplitude of local magnetic moments, the spin susceptibility and the specific heat are calculated, which are in qualitatively, or semi-quantitatively good agreement with experimental data.read more
Citations
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Disordered local moment state of magnetic transition metals: a self-consistent KKR CPA calculation
TL;DR: In this paper, the authors performed self-consistent KKR CPA calculations for the disordered local moment (DLM) state of Fe, Co, Ni and Cr at different temperatures.
Journal ArticleDOI
Magnetism of iron above the Curie temperature
TL;DR: In this paper, the electronic structure of paramagnetic iron is calculated self-consistently within the local spin density functional formalism by applying the coherent potential approximation with the muffin-tin potential model.
Journal ArticleDOI
First-principles investigations of atomic disorder effects on magnetic and structural instabilities in transition-metal alloys.
TL;DR: The coherent-potential approximation within the Korringa-Kohn-Rostocker band-structure scheme is used to investigate the influence of atomic disorder on magnetism and crystal structure of transition-metal alloys like iron-nickel and finds that magnetism in the ground state gradually vanishes.
Journal ArticleDOI
Theory of local magnetic moments in transition metals
TL;DR: In this paper, the authors consider whether a state of disordered local moments (DLM) can exist in an itinerant magnetic metal above Tc and develop a criterion Il(EF)>1 for the non-magnetic state to be unstable with respect to the formation of DLM.
Journal ArticleDOI
Towards a constrained local moment model for first principles spin dynamics
G. M. Stocks,Balazs Ujfalussy,Xindong Wang,D. M. C. Nicholson,William A. Shelton,Yang Wang,Andrew Canning,Balazs L. Gyorffy +7 more
TL;DR: In this paper, a constrained local moment (CLM) model is proposed to describe the instantaneous noncollinear states that are being evolved according to the classical equation of motion of spin-dynamics.
References
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Journal ArticleDOI
Recent progress in the theory of itinerant electron magnetism
TL;DR: A review of recent theoretical investigations toward unified understanding of magnetism in narrow-band electron systems is given in this article, where the classical controversy between the itinerant and localized models have been resolved into a more general and well-defined problem of spin density fluctuations in a general sense.
Journal ArticleDOI
The Magnetization of Pure Iron and Nickel
J. Crangle,G. M. Goodman +1 more
TL;DR: In this paper, the saturation magnetization of very pure iron and nickel has been measured absolutely by a force method at room temperature, and the values are 217.6 and 55.1 emu/g (217.6 −1 kg −1 ) respectively.
Journal ArticleDOI
Energy Bands in Ferromagnetic Iron
Joseph Callaway,C. S. Wang +1 more
TL;DR: In this paper, a self-consistent tight-binding calculation of the band structure of body-centered-cubic iron was performed using the Coulomb part of the crystal potential in the first iteration, constructed from a superposition of overlapping neutral-atom charge densities.
Journal ArticleDOI
Local-band theory of itinerant ferromagnetism. I. Fermi-liquid theory
TL;DR: In this paper, a fluctuating-local-band theory was proposed, which generalizes the old localized-itinerant complementarity, and the range of validity of the theory was shown to extend well above the Curie temperature.