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Antiferromagnetism of the cation-ordered warwickite system Mn<inf>2-</inf><inf>x</inf>Mg<inf>x</inf>BO<inf>4</inf> (x = 0.5, 0.6 and 0.7)

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dc.contributor.author Kazak N.V.
dc.contributor.author Belskaya N.A.
dc.contributor.author Moshkina E.M.
dc.contributor.author Bezmaternykh L.N.
dc.contributor.author Vasiliev A.D.
dc.contributor.author Sofronova S.N.
dc.contributor.author Eremina R.M.
dc.contributor.author Eremin E.V.
dc.contributor.author Muftakhutdinov A.R.
dc.contributor.author Cherosov M.A.
dc.contributor.author Ovchinnikov S.G.
dc.date.accessioned 2021-02-25T20:34:56Z
dc.date.available 2021-02-25T20:34:56Z
dc.date.issued 2020
dc.identifier.issn 0304-8853
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/161843
dc.description.abstract © 2020 Elsevier B.V. X-ray diffraction, heat capacity and magnetic measurements are performed on single crystals of Mn2-xMgxBO4 (x = 0.5, 0.6 and 0.7) with the warwickite structure. The monoclinic symmetry is found for all samples with the space group P21/n. The M1 site is occupied by trivalent Mn ions while the M2 site is occupied by a mixture of divalent Mg and Mn ions. Regular cation and charge distributions are observed, which is unusual for heterometallic warwickites. The local octahedral distortions of M1O6 show the monotonic dependence on the Mg content and are in accordance with the Jahn-Teller distortion. All samples are found to undergo long-range antiferromagnetic ordering with rather low transition temperatures of TN = 16, 14 and 13 K for x = 0.5, 0.6, and 0.7, respectively. The ordering of local octahedral distortions, caused by the strong electron-phonon interaction of the trivalent Mn ions, is proposed to stabilise the cationic ordering and, as a result, the long-range magnetic ordering in the material.
dc.relation.ispartofseries Journal of Magnetism and Magnetic Materials
dc.subject Antiferromagnet
dc.subject Cation ordering
dc.subject Jahn-Teller distortions
dc.subject Warwickites
dc.title Antiferromagnetism of the cation-ordered warwickite system Mn<inf>2-</inf><inf>x</inf>Mg<inf>x</inf>BO<inf>4</inf> (x = 0.5, 0.6 and 0.7)
dc.type Article
dc.relation.ispartofseries-volume 507
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS03048853-2020-507-SID85082659206


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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