The magnetic structure of EuPdSn

The TiNiSi-type structure, antiferromagnetic ordering and divalent state of europium in EuPdSn have been confirmed by neutron powder diffraction. The Néel temperature is 16.2(3) K. The magnetic diffraction peaks can be indexed with a propagation vector k = [0, 0.217, qz] (qz ≤ 0.02) at 13.2 K, and k...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2012-06, Vol.24 (23), p.236004-236004
Main Authors: Lemoine, P, Cadogan, J M, Ryan, D H, Giovannini, M
Format: Article
Language:English
Subjects:
Antiferromagnetism
Chemical Sciences
Condensed Matter
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cristallography
Diffraction
Europium
Exact sciences and technology
Flats
Inorganic chemistry
Magnetic properties and materials
Magnetic structure
Material chemistry
Materials Science
Mathematical analysis
Physics
Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
Vectors (mathematics)
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Summary:The TiNiSi-type structure, antiferromagnetic ordering and divalent state of europium in EuPdSn have been confirmed by neutron powder diffraction. The Néel temperature is 16.2(3) K. The magnetic diffraction peaks can be indexed with a propagation vector k = [0, 0.217, qz] (qz ≤ 0.02) at 13.2 K, and k = [0, 0.276, 0] at 3.6 K, indicating an incommensurate antiferromagnetic structure at both temperatures. At 13.2 K, the best refinement is obtained with a sinusoidally modulated magnetic structure and europium magnetic moments oriented in the (a,b) plane with an azimuthal angle φ of 66(4)°relative to the a-axis. By 3.6 K, the magnetic structure of EuPdSn has transformed to an (a,b) planar helimagnetic structure (a 'flat spiral').
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/24/23/236004