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Scientific article
English

Anisotropic magnetic, transport and thermodynamic properties of novel tetragonal Ce2RhGa12 compound

Published inJournal of alloys and compounds, vol. 604, p. 379-383
Publication date2014
Abstract

We report on a comprehensive study of the magnetization, resistivity and heat capacity on the single crystals of Ce2RhGa12 synthesized using Ga flux. Single crystal X-ray diffraction data confirm the tetragonal Pb/nbm structure of Ce2RhGa12, which is isostructural to Ce2PdGa12. Ce2RhGa12 orders antiferromagnetically at TN = 3.5 K and exhibits anisotropic magnetic behavior, inferred from the magnetization and resistivity data, taken along the two principal crystallographic directions of the crystal, viz., along [100] and [001]. The anisotropic magnetic response of Ce2RhGa12 establishes [001] as the easy axis of magnetization, and a weak meta-magnetic transition is also observed in the magnetic isotherm at 2K along the same axis. A sharp peak in specific heat signals the bulk antiferromagnetic transition at TN = 3.5 K, which shifts to lower temperatures in low applied fields. The electrical resistivity along the two directions shows metallic behavior from 300K down to 1.8K and establishes Ce2RhGa12 as a normal, trivalent cerium compound.

Keywords
  • Intermetallic
  • Anisotropy
  • Heavy fermions
  • Heat capacity
  • Magnetization
Research group
Citation (ISO format)
NALLAMUTHU, S. et al. Anisotropic magnetic, transport and thermodynamic properties of novel tetragonal Ce<sub>2</sub>RhGa<sub>12</sub> compound. In: Journal of alloys and compounds, 2014, vol. 604, p. 379–383. doi: 10.1016/j.jallcom.2014.03.067
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ISSN of the journal0925-8388
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Creation06/18/2014 8:01:00 AM
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