2008
DOI: 10.15407/ufm.09.01.001
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Fe–Ni Alloys at High Pressures and Temperatures: Statistical Thermodynamics and Kinetics of the $L1_{2}$ or $D0_{19}$ Atomic Order

Abstract: Оглянуто кристалічні структури стопів Fe-Ni за екстремальних умов (зок-рема, типу стану всередині ядра Землі) -високих тиску p і температури T. Проаналізовано роль магнетних ефектів у атомовім впорядкуванні, взаємо-чин атомового й магнетного порядків та вплив тиску на магнетні властивос-ті стопів Fe-Ni: точку Кюрі T C , фазовий перехід феромагнетик-анти-феромагнетик, інварний ефект. Із застосуванням наближення самоузго-дженого поля розглянуто статистично-термодинамічний модель ГЦК-стопів заміщення з обома магн… Show more

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Cited by 20 publications
(11 citation statements)
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“…Following [15,[25][26][27][28][29], we consider a substitutional f.c.c.-Ni-Fe alloy, which consists of two magnetic constituents and is characterized by two types of a spatial order, notably, magnetic and atomic orders. It is worth noting that the presented analysis is based solely on the local magnetic moments model, which is valid within the lattice-gas approximation only and cannot be applied to the description of the "itinerant" magnetism of "quasi-free" electrons.…”
Section: Statistical Thermodynamics Model Of Fcc-ni-fe Alloys Undementioning
confidence: 99%
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“…Following [15,[25][26][27][28][29], we consider a substitutional f.c.c.-Ni-Fe alloy, which consists of two magnetic constituents and is characterized by two types of a spatial order, notably, magnetic and atomic orders. It is worth noting that the presented analysis is based solely on the local magnetic moments model, which is valid within the lattice-gas approximation only and cannot be applied to the description of the "itinerant" magnetism of "quasi-free" electrons.…”
Section: Statistical Thermodynamics Model Of Fcc-ni-fe Alloys Undementioning
confidence: 99%
“…The indices (α, β) designate the types of atoms (Fe, Ni), c α (r) is a local random variable (1 or 0) of substitution of f.c.c.-lattice site r by an α atom, S α (r) is the spin operator of α atom situated at the site r, μ B is the Bohr magneton, g α is the Landé factor of α atom. J αβ (r − r ) and W αβ (r − r ) are the magnetic ("exchange") and "paramagnetic" (actually "electrochemical" together with "strain-induced" [15,[25][26][27][28][29]) "pairwise" interatomic-interaction energies, respectively. One can see that, in (1), the possible influence of the applied magnetic field with induction B on the spatial configuration of ions by means of their magnetic moments is taken into account explicitly (see, for details, [3,4,15,27,28]).…”
Section: Statistical Thermodynamics Model Of Fcc-ni-fe Alloys Undementioning
confidence: 99%
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