Magnetic properties of rare-earth sulfide YbAgS^sub 2

We have succeeded in synthesizing single-phase polycrystalline samples of YbAgS2 belonging to the tetragonal system with space group I41 md . YbAgS2 shows an antiferromagnetic transition at TN = 6.6 K . The effective magnetic moment is in good agreement with the theoretical value for Yb3+ free ion....

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2018-05, Vol.536, p.314
Main Authors: Iizuka, Ryosuke, Numakura, Ryosuke, Michimura, Shinji, Katano, Susumu, Kosaka, Masashi
Format: Article
Language:English
Subjects:
Antiferromagnetism
Conduction electrons
Entropy
Intermetallic compounds
Kondo effect
Magnetic moments
Magnetic permeability
Magnetic properties
Magnetism
Rare earth elements
Temperature
Temperature dependence
Trace elements
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Summary:We have succeeded in synthesizing single-phase polycrystalline samples of YbAgS2 belonging to the tetragonal system with space group I41 md . YbAgS2 shows an antiferromagnetic transition at TN = 6.6 K . The effective magnetic moment is in good agreement with the theoretical value for Yb3+ free ion. A broad anomaly is observed just above TN in the temperature dependence of magnetic susceptibility. The entropy released at TN is only about half of Rln2 expected for a Kramers doublet ground state. We consider that these phenomena are due to the existence of short-range magnetic correlations rather than the partial screening of the Yb moments by conduction electrons via the Kondo effect.
ISSN:0921-4526
1873-2135