Local magnetic anisotropy and magnetostriction of amorphous ferromagnets
| Autor: | Christian Elsässer, J. Furthmüller, R. Pawellek, Manfred Fähnle, Michael C. Böhm, Ernst Helmut Brandt |
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| Rok vydání: | 1990 |
| Předmět: |
Physics
Condensed Matter::Materials Science Magnetic anisotropy Ferromagnetism Condensed matter physics Perturbation (astronomy) Condensed Matter::Strongly Correlated Electrons Magnetostriction Crystallite Electrical and Electronic Engineering Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid |
| Zdroj: | Physica B: Condensed Matter. 161:225-231 |
| ISSN: | 0921-4526 |
| Popis: | The theory of magnetostriction in amorphous ferromagnets is developed in two steps. In the microscopic part the local magnetic anisotropy for a computer generated model of amorphous iron is calculated by a semi-empirical Hartree-Fock perturbation approach for the local spin-orbit coupling operator. Based on this information a polycrystalline model of amorphous ferromagnets is developed in the phenomenological part, and the inhomogeneous magnetostrictive strain field as well as the effective magnetostriction constant is calculated by means of the local linearized theory of elasticity. Comparison with experimental results is performed. |
| Databáze: | OpenAIRE |
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