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Temperature hysteresis and thermal remagnetization in magnetic materials

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3 Author(s)
Basso, Vittorio ; Istituto Elettrotecnico Nazionale (IEN) Galileo Ferraris, Strada delle Cacce 91, 10135 Torino, Italy ; LoBue, Martino ; Bertotti, Giorgio

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A temperature-dependent Preisach model is introduced and discussed for the case where the Preisach distribution depends on temperature through scaling factors. By expressing the model in terms of temperature-independent variables, we derive expressions for the hysteretic magnetization response to cyclic temperature variations as a function of past field history. We apply these results to the interpretation of thermal remagnetization phenomena experimentally observed in hard magnetic materials.

Published in:

Journal of Applied Physics  (Volume:97 ,  Issue: 10 )