Abstract
Abstract The free-powder (monocrystal) magnetization of ErY 2 Co 11 B 4 has been studied at 4.2 K in the Amsterdam High-Field Facility in fields up to 35 T. A metamagnetic transition is found. The magnetization process in this compound can be explained in terms of a two-sublattice model taking into account the Er- and Co-sublattice anisotropy, and the ErCo exchange interaction. The anisotropy constants and the molecular-field coefficient n ErCo are determined by fitting the magnetization curve. The results are in good agreement with the results of analyzing the easy- and hard-magnetization curves measured on magnetically aligned samples.
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