Crystal chemistry aspects of the magnetically induced ferroelectricity in TbMn2O5 and BiMn2O5

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dc.creatorVolkova, L. M.
dc.creatorMarinin, D. V.
dc.date2008-05-20
dc.date2008-12-03
dc.date.accessioned2026-07-07T12:08:28Z
dc.date.available2026-07-07T12:08:28Z
dc.descriptionThe origin of magnetic frustration was stated and the ions whose shift is accompanied by emerging magnetic ordering and ferroelectricity in TbMn2O5 and BiMn2O5 were determined on the basis of calculation of magnetic coupling parameters by using the structural data. The displacements accompanying the magnetic ordering are not polar, they just induce changes of bond valence (charge disordering) of Mn1 and Mn2, thus creating instability of the crystal structure. To approximate again the bond valence to the initial value (charge ordering) under magnetic ordering conditions is possible only due to polar displacement of Mn2 (or O1) and O4 ions along the b axis that is the cause of ferroelectric transition.
dc.description17 pages, 3 figures, 5 tables
dc.identifierhttps://arxiv.org/abs/0805.3053
dc.identifierhttp://arxiv.org/abs/0805.3053
dc.identifierJ. Phys.: Condens. Matter 21 (2009) 015903
dc.identifierdoi:10.1088/0953-8984/21/1/015903
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209333
dc.subjectMaterials Science
dc.titleCrystal chemistry aspects of the magnetically induced ferroelectricity in TbMn2O5 and BiMn2O5
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