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Trimers of MnO6 octahedra and ferrimagnetism of Ba4NbMn3O12

Author(s): Nguyen, Loi T; Kong, Tai; Cava, Robert J

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Abstract: Ba4NbMn3O12 is reported, synthesized by a solid state method in air. The crystal structure, determined by performing refinements on room temperature powder x-ray diffraction data by the Rietveld method, consists of Mn3O12 trimers in the configuration of three face-sharing MnO6 octahedra, with the trimers arranged in triangular planes. An effective moment of 4.82 μB/f.u is observed and competing antiferromagnetic and ferromagnetic interactions between Mn ions are inferred from the Weiss temperature of −4 K and the ferrimagnetic ordering transition of approximately 42 K. Ba4NbMn3O12 is a semiconductor with a transport activation energy of 0.37 eV.
Publication Date: 22-Feb-2019
Electronic Publication Date: 22-Feb-2019
Citation: Nguyen, Loi T, Kong, Tai, Cava, RJ. (2019) Trimers of MnO6 octahedra and ferrimagnetism of Ba4NbMn3O12. Materials Research Express, 6 (5), 056108 - 056108. doi:10.1088/2053-1591/ab0695
DOI: doi:10.1088/2053-1591/ab0695
EISSN: 2053-1591
Pages: 056108 - 056108
Type of Material: Journal Article
Journal/Proceeding Title: Materials Research Express
Version: Author's manuscript



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