Magnetic Property and Hall Resistivity of Rare Earth Intermetallic Compounds HoAg_<i-x> In_<x>

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Measurements of the magnetization and the Hall resistivity have been made on the polycrystals of HoAg_<1-x> In_<x> compounds. The compound is antiferromagnetic for x＝0～0.2 and ferromagnetic for x＝0.3～0.5. The Néel and the Curie temperatures take maximum around x＝0.1 and 0.4, respectively. The ordinary Hall coefficient is positive for all the compounds. It takes minimums at z≒0.1 and 0.4 where the magnetic transition temperature takes maximums. The spontaneous Hall coefficient R_s is negative for x＝0, 0.1, and 0.5 and positive for x＝0.2～0.4. It takes a maximum at x≒0.3. The behavior of R_s is not the same manner as the three compound systems of RAg_<1_x> In_x (R=Gd, Tb, and Dy), and cannot be explained by the localized spin model only.
琉球大学理学部の論文