Criteria for saturated magnetization loop

A. Harres, M. Mikhov, V. Skumryev, A. M.H. De Andrade, J. E. Schmidt, J. Geshev

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© 2015 Elsevier B.V. Proper estimation of magnetization curve parameters is vital in studying magnetic systems. In the present article, criteria for discrimination non-saturated (minor) from saturated (major) hysteresis loops are proposed. These employ the analysis of (i) derivatives of both ascending and descending branches of the loop, (ii) remanent magnetization curves, and (iii) thermomagnetic curves. Computational simulations are used in order to demonstrate their validity. Examples illustrating the applicability of these criteria to well-known real systems, namely Fe3O4 and Ni fine particles, are provided. We demonstrate that the anisotropy-field value estimated from a visual examination of an only apparently major hysteresis loop could be more than two times lower than the real one.
Idioma originalEnglish
Pàgines (de-a)76-82
RevistaJournal of Magnetism and Magnetic Materials
Estat de la publicacióPublicada - 15 de març 2016


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