Crystal growth,structure, and properties of manganese orthovanadate Mn3(VO4)2 |
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| Affiliation: | 1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA;2. Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA;3. Laboratoire CRISMAT, ISMRa, 14050 Caen Cédex, France;1. Department of Chemistry, Montclair State University, Montclair, NJ 07043, USA;2. Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA;3. National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA;4. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6056, USA;1. Department of Immunology, School of Medicine, Nankai University, Tianjin 300071, China;2. Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300308, China;3. Collage of Life Science, Nankai University, Tianjin, 300071, China;4. Department of Neurology, Huanhu Hospital, Tianjin 300060, China;1. Servicio de Reumatología, Hospital Universitario de Salamanca, Salamanca, España;2. Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, España |
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| Abstract: | Manganese orthovanadate Mn3(VO4)2 single crystals were grown for the first time from a flux of MnO/V2O5/MoO3. The flux and oxygen partial pressure used are the key factors for the crystal growth and prevention of the oxidation of Mn2+ and the reduction of V5+ during the crystallization process. The reduction and oxidation chemistry of Mn3(VO4)2 was studied. Mn3(VO4)2 is isostructural with magnesium orthovanadate Mg3(VO4)2, orthorhombic, space group Cmca, a=6.247(1) Å, b=11.728(2) Å, c=8.491(2) Å and Z=4, as determined by single crystal X-ray diffraction. Because it is a Mn2+ deficient spinel structure there are two-dimensional sheets of Mn2+O6 octahedra within the structure which show unusual ferrimagnetic properties. |
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