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Features of thermal and magnetic properties of nonstoichiometric DyB50 boride: The influence of the magnetic phase transition and crystal electric field

TitleFeatures of thermal and magnetic properties of nonstoichiometric DyB50 boride: The influence of the magnetic phase transition and crystal electric field
Publication TypeJournal Article
Year of Publication2018
AuthorsNovikov, VV, Zhemoedov, NA, Matovnikov, AV, Mitroshenkov, NV, Kuznetsov, SV, Bud'ko, SL
JournalJournal of Magnetism and Magnetic Materials
Volume449
Pagination257-262
Date Published03
Type of ArticleArticle
ISBN Number0304-8853
Accession NumberWOS:000415976800037
Keywordsanomalies, Antiferromagnets, Borides, expansion, Low temperatures, Magnetic phase transitions, Materials Science, physics, Specific heat, temperature heat-capacity, Thermal expansion
Abstract

The specific heat, thermal expansion and magnetic properties of polycrystalline sample of nonstoichiometric dysprosium boride DyB50, that was synthesized by boron-thermal reduction of the metal from its oxide in vacuum, were studied at 2-300 K. The measurements revealed a heat capacity and magnetic susceptibility anomalies at about T-N approximate to 6.3 K, caused by the transition to an antiferromagnetic state. The anomalies of studied properties of DyB50 at higher temperatures have been ascribed to the influence of crystal electric field (CEF). The scheme of CEF-splitting of Dy3+ ion ground level in boride has been proposed. (C) 2017 Elsevier B.V. All rights reserved.

DOI10.1016/j.jmmm.2017.10.049
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