Determination of the out-of-plane anisotropy contributions (first and second anisotropy terms) in amorphous Nd-Co thin films by micromagnetic numerical simulations

by / Wednesday, 07 March 2018 / Published in

Determination of the out-of-plane anisotropy contributions (first and second anisotropy terms) in amorphous Nd-Co thin films by micromagnetic numerical simulations


Published in: Journal of Magnetism and Magnetic Materials, 456, 251-256
2018/06/15
Publisher URL: https://www.sciencedirect.com/science/article/pii/S0304885317330846?via%3Dihub
DOI: https://doi.org/10.1016/j.jmmm.2018.01.086 Authors:
L. M. Álvarez-Prado R. Cid Rafael Morales J. Diaz M. Vélez H. Rubio A. Hierro-Rodríguez J. M. Alameda
Abstract:

Amorphous Nd-Co thin films exhibit stripe shaped periodic magnetic domains with local out-of-plane magnetization components due to their perpendicular magnetic anisotropy. This anisotropy has been quantified in a fairly simple way by reproducing the experimental magnetization curves by means of micromagnetic numerical simulations. The simulations show that the first (K1) and second (K2) anisotropy constants must be used to properly describe the variation of the stripe domains with the in plane applied magnetic field. A strong temperature dependence of both K1 and K2 has been obtained between 10 K and room temperature. This anisotropy behavior is characteristic of two magnetically coupled 3d-4f sublattices with competing anisotropies.

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