The role of competing magnetic interactions on the abnormal expansion properties in manganese antiperovskites, Mn 3+x A 1−x N (A  = Ni, Sn)

Boldrin, D. and Cohen, L.F. (2017) The role of competing magnetic interactions on the abnormal expansion properties in manganese antiperovskites, Mn 3+x A 1−x N (A  = Ni, Sn). Journal of Alloys and Compounds, 699, pp. 887-891. (doi: 10.1016/j.jallcom.2016.12.262)

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Abstract

The role of competing magnetic interactions in Mn-doped manganese antiperovskites Mn3+xA1−xN (A = Ni and Sn) has been explored using magnetometry and dilatometry, with particular focus on their relation to abnormal expansion properties. Rare negative magnetisation phenomena are found in zero-field-cooled conditions for both A = Sn and Ni when Mn is doped on the A site. Such behaviour is evidence of both competing magnetic sublattices and magnetocrystalline anisotropy. By comparison with other compounds with the antiferromagnetic magnetic structure, we suggest that competing interactions along with magnetovolume coupling influence the near-zero thermal expansion behaviour at intermediate temperatures below in the A = Ni family.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Boldrin, Dr David
Authors: Boldrin, D., and Cohen, L.F.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Alloys and Compounds
Publisher:Elsevier
ISSN:0925-8388
ISSN (Online):1873-4669
Published Online:24 December 2016
Copyright Holders:Copyright © 2016 Elsevier
First Published:First published in Journal of Alloys and Compounds 699:887-891
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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