Magnetic Susceptibility of liquid Gd-NM (NM = Cu, Ga, Ge) alloys

¹ Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
² Department of Physics and Earth Sciences, Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan
³ Niigata College of Technology, Niigata 950-2076, Japan

^* Corresponding author: shimakura@nupals.ac.jp

Published online: 21 August 2017

Abstract

For rare earth alloys, the indirect interaction of RKKY is at work between rare-earth atoms. Therefore, the magnetism of them depends on the number of conduction electrons and the distance between rare-earth metals. In this work, to reveal the relationship between the number of conduction electrons and magnetic property of rare earth metal alloys, magnetic susceptibility measurements for liquid Gd-NM (NM = Cu, Ga, Ge) was performed by Faraday method. As the results, it was observed that the sign of paramagnetic Curie temperature of Cu-Gd alloys are positive at all composition, while Ga-Gd and Ge-Gd alloys show negative paramagnetic Curie temperature at certain composition. Moreover, it was indicated when the alloy at certain composition shows highest melting temperature, it has the lowest paramagnetic Curie temperature.