Improvement of magnetic hardness at finite temperatures: ab initio disordered local moment approach for YCo${}_5$

Abstract

Temperature dependence of the magnetocrystalline anisotropy energy and magnetization of the prototypical rare-earth magnet YCo${}_5$ is calculated from first principles, utilizing the relativistic disordered local moment approach. We discuss a strategy to enhance the finite-temperature anisotropy field by hole doping, paving the way for an improvement of the coercivity near room temperature or higher.

arXiv comment12 pages, 13 figures, some corrections made and a reference updated

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