Thermal and magnetic properties of Ce5Ni2Si3

Heat capacity and magnetization were measured on crystal Ce5Ni2Si3 grown by Czochralski method. The compound is antiferromagnetic below TN=6.7K. The irreversibility in zero-field cooling and field-cooling curves, deviation from Curie Weiss law and ferromagnetic-like behavior in magnetization curves...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-80, p.851-853
Main Authors: MIHALIK, Marian, MAT'AS, Slavomir, KOVAC, Jozef, KAVECANSKY, Viktor, MIHALIK, Matus, SVOBODA, Pavel
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Critical-point effects, specific heats, short-range order
Exact sciences and technology
Magnetic properties and materials
Physics
Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
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Summary:Heat capacity and magnetization were measured on crystal Ce5Ni2Si3 grown by Czochralski method. The compound is antiferromagnetic below TN=6.7K. The irreversibility in zero-field cooling and field-cooling curves, deviation from Curie Weiss law and ferromagnetic-like behavior in magnetization curves at low fields were observed. Anisotropy in magnetization dependencies and large Shottky contribution to specific heat are attributed to crystalline electric field effect. The enhancement of C/T(T) at low temperatures can be described by an empirical formula gamma=gamma0(1+Aexp(-BT)).
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2006.01.314