Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 325, Issue -, Pages 135-140Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2012.08.028
Keywords
Rare-earth intermetallic compound; Hexagonal perovskite-type structure; Neutron powder diffraction; Magnetic structure
Funding
- Canada Research Chairs programme
- Natural Sciences and Engineering Research Council of Canada
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The hexagonal perovskite (BaNiO3-type) structure of NdCrGe3 and its ferromagnetic order at T-C = 122 K have been confirmed by neutron powder diffraction measurements. The magnetic structure is characterized by an axial ferromagnetic arrangement of both the Cr and Nd sublattices below T-C. The relatively high Curie temperature of this compound is mainly driven by the magnetic ordering of the Cr sublattice with Nd-Cr magnetic interactions also playing a role. The magnetic ordering of the Nd sublattice, deduced from the thermal variation of the magnetic moments, occurs at around T approximate to 70 K. The absence of a spin reorientation of the Nd and Cr magnetic order allows us to conclude that the complex magnetic behaviour previously observed at low temperatures in macroscopic magnetic measurements is a consequence of strong magnetocrystalline anisotropy effects. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
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