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Paper title: HYSTERESIS MODELING ACCURACY FOR SOFT MAGNETIC NANOPOWDERS

Author(s): VALENTIN IONIŢĂ, MIRELA CODESCU, ELENA CHIŢANU, LUCIAN PETRESCU, EMIL CAZACU,

Abstract:

The paper investigates the experimental and numerical problems related to the macroscopic hysteresis modelling of the soft magnetic core-shell nanoparticles made by FeNi3 nanoparticles, encapsulated in alumina (Al2O3) shells. The well-known classical Preisach model was improved by using a Lagrange polynomial interpolation of the numerical Everett integrals and a precise management of the Preisach history line. The numerical tests show an adequate accuracy of the proposed model error less than 3.2 % for minor hysteresis cycles, even some perturbations occur in the measured data.

Keywords: Hysteresis, Preisach model, Magnetic nanoparticles, Nanopowder, Core-shell nanoparticle, Numerical accuracy

Year: 2018 | Tome: 63 | Issue: 1 | Pp.: 11-14

Full text : PDF (314 KB)