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Anisotropic magnetic properties of trigonal ErAl2Ge2 single crystal
, A. Thamizhavel, S.K. Dhar
Published in Institute of Physics Publishing
2020
PMID: 31952051
Volume: 32
   
Issue: 18
Abstract
We report the anisotropic magnetic properties of the ternary compound ErAl2Ge2. Single crystals of this compound were grown by high temperature solution growth technique,using Al:Ge eutectic composition as flux. From the powder x-ray diffraction we confirmed that ErAl2Ge2 crystallizes in the trigonal CaAl2Si2-type crystal structure. The anisotropic magnetic properties of a single crystal were investigated by measuring the magnetic susceptibility, magnetization, heat capacity and electrical resistivity. A bulk antiferromagnetic ordering occurs around 4 K as inferred from the magnetic susceptibility and the heat capacity. The susceptibility is larger along the ab-plane and flattens out below the magnetic transition temperature and the magnetization in the ordered state increases more rapidly along the ab-plane than along the c-axis suggesting that the moments are inclined more towards the ab-plane. The magnetic susceptibility, magnetization and the 4f -derived part of the heat capacity in the paramagnetic regime analysed based on the point charge model of the crystalline electric field (CEF) indicate a relatively low CEF energy level splitting. © 2020 IOP Publishing Ltd.
About the journal
JournalJournal of Physics Condensed Matter
PublisherInstitute of Physics Publishing
ISSN09538984
Open AccessNo