Thermodynamics of Formation of the Hydrogenated Permalloy under High Pressure on the Basis of the Approach from the First Principles
O. E. Krasovskii
Institute of Magnetism under NAS and MES of Ukraine, 36b Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
Received: 27.06.2012. Download: PDF
Thermodynamics of formation of the hydrogenated permalloy is explored at a high pressure within the scope of the ab initio approach. Thermodynamic potentials of reactions of formation of the phases with the various content of hydrogen are calculated on the basis of the density functional theory. The permalloy–hydrogen phase diagram in a wide range of pressures is plotted and confirms stability of such compounds at given thermodynamic parameters. Comparison with available experimental data shows a good agreement between the theoretical and experimental phase diagrams.
Keywords: hydrogen in metals, permalloy, high pressures, thermodynamics of hydrogen-saturation of metals.
PACS: 61.50.Ks, 71.15.Mb, 71.15.Nc, 75.50.Bb, 81.30.Bx, 82.60.Cx, 82.60.Lf
DOI: https://doi.org/10.15407/ufm.13.04.383
Citation: O. E. Krasovskii, Thermodynamics of Formation of the Hydrogenated Permalloy under High Pressure on the Basis of the Approach from the First Principles, Usp. Fiz. Met., 13, No. 4: 383—395 (2012) (in Russian), doi: 10.15407/ufm.13.04.383