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Spin and dipole order in geometrically frustrated mixed-valence manganite Pb3Mn7O15
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Center of Materials Science, Karpov Institute of Physical Chemistry, Moscow, Russia..
Moscow Technol Univ, Moscow 119434, Russia..
Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden..
Karpov Inst Phys Chem, Ctr Mat Sci, Vorontsovo Pole 10, Moscow 105064, Russia..
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2016 (English)In: Journal of materials science. Materials in electronics, ISSN 0957-4522, E-ISSN 1573-482X, Vol. 27, no 12, p. 12562-12573Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

The structural, magnetic, and dielectric properties of Pb3Mn7O15 have been investigated using high-quality single crystals. Pb3Mn7O15 adopts a pseudo-hexagonal orthorhombic structure, with partially filled Kagom, layers connected by ribbons of edge-sharing MnO6 octahedra and intercalated Pb cations. There are 9 inequivalent sites in the structure for the Mn ions, which exist both as Mn3+ and Mn4+. Pb3Mn7O15 undergoes an antiferromagnetic transition below T-N similar to 67 K, with significant geometric frustration. Neutron powder diffraction on crushed single crystals allowed us to determine the low-temperature antiferromagnetic magnetic structure. We discuss the magnetic interaction pathways in the structure and possible interplay between the structural distortions imprinted by the lone-electron pair of Pb2+ cations and Mn3+/Mn4+ charge ordering.

Place, publisher, year, edition, pages
2016. Vol. 27, no 12, p. 12562-12573
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:uu:diva-312056DOI: 10.1007/s10854-016-5387-3ISI: 000389231000040OAI: oai:DiVA.org:uu-312056DiVA, id: diva2:1062200
Conference
Solar Asia International Conference, 2015, Savitribai Phule Pune Univ, Pune, INDIA
Available from: 2017-01-04 Created: 2017-01-04 Last updated: 2017-11-29Bibliographically approved

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Ivanov, Sergey A.Tellgren, RolandNordblad, PerMathieu, Roland
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