Thermodynamic aspects of magnetic-field-driven phase transformations in Gd-Si-Ge alloys
A temperature-dependent Preisach model is proposed to describe hysteresis in materials in which a structural phase transformation driven by the magnetic field takes place. The model is applied to the interpretation of the temperature dependence of hysteretic magnetization curves measured for Gd-Si-G...
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Veröffentlicht in: | Journal of applied physics 2006-04, Vol.99 (8) |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A temperature-dependent Preisach model is proposed to describe hysteresis in materials in which a structural phase transformation driven by the magnetic field takes place. The model is applied to the interpretation of the temperature dependence of hysteretic magnetization curves measured for Gd-Si-Ge alloys. Predictions about the entropy exchanged during transformations under increasing or decreasing field reveal the role played by internal dissipative processes. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.2163836 |