Quantum model for studying magneto-mechanical properties of a magnetically soft ferromagnet
| Autor: | N. G. Lebedev, Andrey Orlov, V.К. Ignatiev, Sergey Perchenko |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Numerical analysis Experimental data 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Crystal Ferromagnetism 0103 physical sciences Inverse magnetostrictive effect 0210 nano-technology Equations for a falling body Magneto Quantum |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 494:165658 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2019.165658 |
| Popis: | In a theoretical part of the paper a macroscopic model, based on quantum approaches, of a deformed magnetically soft ferromagnet is proposed for the α-iron crystal sample. The statistical transition to a multidomain sample is carried out and dynamical equations of the Bloch type are obtained. In the framework of modelling approximations and the Runge-Kutta numerical method, a solution of dynamic equations in the form of a complete hysteresis loop is obtained. The dependences of hysteresis loop parameters on the crystal tetragonallity and the relative deformation are studied. In an experimental part the magneto-elastic effect (the Villari effect) in the steel ER70S-6 sample is investigated. A comparison of model results with experimental data is shown a qualitative and quantitative agreement. Also a series of experiments are carried out to research magneto-plastic effects in the steel 9MnSi5 sample. It is found the effect of a mechanical erasure of a magnetic memory of a metal (MMM). An application of the theoretical model to research the obtained MMM effect is shown a quantitative agreement with experimental data. |
| Databáze: | OpenAIRE |
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