V. I. Belokon, O. I. Dyachenko, O. A. Gorodnikov, A. D. Burtsev
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The Effect of Pressure on the Curie Temperature of Magnetite: A Random Exchange Interaction Field Method
The effect of pressure on the Curie temperature of magnetite is examined using the random exchange interaction field method. It is known that compression of the crystal lattice leads to increased overlap of electronic orbitals, which enhances exchange interaction and increases the Curie temperature. A parametric model of pressure dependence of the Curie temperature, which takes into account the magnetic Grüneisen parameter and isothermal compressibility, is constructed. The obtained theoretical results are in good agreement with experimental data, demonstrating linear dependence of the Curie temperature on pressure. The model can be used to analyze implications of lithostatic and shock pressure for the magnetic properties of magnetite and related minerals, which is important for the correct interpretation of paleomagnetic data.
期刊介绍：
Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.
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