Article
Relationship between coercivity and magnetic moment of superparamagnetic particles with dipolar interaction
Author/s | Conde Amiano, Alejandro
Conde Amiano, Clara Francisca Franco García, Victorino |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2005-11-22 |
Deposit Date | 2016-01-27 |
Published in |
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Abstract | The temperature dependence of the hysteresis loops of Nanoperm-type alloys has been studied. In the high-temperature region above the coercivity maximum, the response of the system can be modeled as that of dipolar-interaction ... The temperature dependence of the hysteresis loops of Nanoperm-type alloys has been studied. In the high-temperature region above the coercivity maximum, the response of the system can be modeled as that of dipolar-interaction superparamagnetic particles, considering a mean interaction field. Special attention has been paid to the influence of the particle size distribution on the applicability of the mean-field model. The two main effects of the dipolar interaction (coercivity and distortion of the thermal dependence of the apparent magnetic moment) have been correlated. |
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