Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153813 | Journal of Magnetism and Magnetic Materials | 2018 | 14 Pages |
Abstract
The Frank-Kasper cage compound EuV2Al20 crystallizes in the cubic structure with Fd3â¾m space group and exhibits unusual magnetic and transport properties. The system undergoes an antiferromagnetic transition below 5.6â¯K wherein the Eu2+ moments are aligned anti-parallel along ã1â¯1â¯1ã direction and the system exhibits a weak metamagetic transition at the field of 1â¯T. Arrott plots (M2 vs H/M) show a “S” shaped variation in the low fields below TN and the plausible reason for the occurrence of negative slope is discussed. Isothermal magnetic entropy change is estimated from both magnetization and heat capacity measurements invoking the Maxwell's thermodynamic relations. Temperature variation of ÎSm showed a weak negative minimum and a sign reversal at the field value of 1â¯T due to field induced metamagnetic transition. Universal master curve is constructed by rescaling the ÎSm vs T curves in the context of analysing the nature of the magnetic transition.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
K. Ramesh Kumar, Harikrishnan S. Nair, A. Bhattacharyya, A. Thamizhavel, André M. Strydom,