Magnetization and Extraordinary Hall Effect in Ferrimagnetic Compounds Er1-xYxFe2

Abstract

Magnetization and extraordinary Hall effect (EHE) were measured on forrimagnetic compounds Er 1- x Y x Fe 2 with x =0, 0.32, 0.42, and 0.58 from 77 K to 650 K (530 K, for EHE). The magnetization measurements showed almost good agreement with the work previously reported. EHE for all the samples showed positive sign (hole like) above compensation point \(\varTheta_{\text{c}}\), and generally showed sign change at \(\varTheta_{\text{c}}\), but this change became less clear as Y concentration increased. The magnetization was calculated by the molecular field approximation which reproduced fairly well the measured ones. Using these data, temperature dependence of EHE was calculated and compared with the measured ones. The agreement between them was generally good. From the analysis of the observed EHE, it was shown that the moments of Er and Fe sublattices contributed to the EHE independently.