SoltanMohammad, S,Belochapkine, S,Missell, FP,Rhen, FMF

2013

January

Journal Of Applied Physics

Preisach analysis of sputtered SmCo thick films

Published

()

ANISOTROPY GROWTH

113

Here, we present an implementation of the moving Preisach model to describe the magnetic behaviour of Sm-Co films. We use two independent Preisach distributions to separate the magnetization into reversible and irreversible components. The numerical simulation works very well for a system where two magnetic phases are weakly or negligibility coupled. We tested our implementation on nanocrystalline Sm-Co films prepared by sputtering and having composition around Sm25Co75. We found that the Sm25Co75 film has a soft and hard phase and quantified their contributions to the total magnetization. Using the moving Preisach model, we characterized the properties of the hard phase, which has a coercivity of 1.26 T and contribution of 74% to the total magnetization. The soft magnetic phase contributes 26% to the total magnetization and has a coercivity of 0.056 T. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4799410]

10.1063/1.4799410