Hysteresis Effect in Mean-Field Model |
| R. Pełka
The H. Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland |
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| A simple feedback loop and a mean-field approximation are employed to simulate the memory effect in the exchange-coupled magnetic system. The nonlinearity of the feedback turns out to be the crucial factor for the appearance of hysteresis loops. A threshold value above which the hysteresis disappears is the mean-field transition temperature. Temperature dependence of the coercive field is investigated. |
DOI: 10.12693/APhysPolA.126.28 PACS numbers: 75.60.-d, 75.50.Vv, 75.60.Ej |