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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13125
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dc.contributor.authorKnowles K.M.-
dc.contributor.authorVickers M.E.-
dc.contributor.authorSil, Anjan-
dc.contributor.authorHan Y.-H.-
dc.contributor.authorJaffrenou P.-
dc.date.accessioned2020-10-15T12:28:58Z-
dc.date.available2020-10-15T12:28:58Z-
dc.date.issued2009-
dc.identifier.citationActa Crystallographica Section B: Structural Science (2009), 65(2): 160-166-
dc.identifier.issn1087681-
dc.identifier.urihttps://doi.org/10.1107/S0108768108042444-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/13125-
dc.description.abstractThe phase designated -Zn3(VO4)2 reported as a minor second phase in zinc oxide-based varistor materials doped with vanadium oxide and manganese oxide is shown to be the L phase, (Zn1 - x Mn x )2V2O7 (0.188 < x < 0.538), in the pseudo-binary Mn2V2O7-Zn2V2O7 system. Analysis of X-ray powder diffraction patterns and electron diffraction patterns of this phase shows that the previously published a, c and Β values for this thortveitite-related phase are incorrect. Instead, Rietveld refinement of the X-ray powder pattern of the L phase shows that it has a monoclinic C lattice with Z = 6, with a = 10.3791 (1), b = 8.5557 (1), c = 9.3539 (1) Å and Β = 98.467 (1)°. Although prior convergent-beam electron diffraction work of -Zn3(VO4)2 confirmed the C Bravais lattice, the space group was found to be Cm rather than C2/m, the difference perhaps arising from the inability of the X-rays to detect small displacements of oxygen. Attempts to refine the structure in Cm did not produce improved R factors. The relationship between the crystal structure of the L phase and the high-temperature C2/m Β′-Zn2V2O7 thortveitite-type solid solution is discussed. © 2009 International Union of Crystallography.-
dc.language.isoen_US-
dc.relation.ispartofActa Crystallographica Section B: Structural Science-
dc.subjectElectron diffraction-
dc.subjectThortveitite-related L phase-
dc.subjectVaristor materials-
dc.subjectX-ray powder diffraction-
dc.titleX-ray powder diffraction and electron diffraction studies of the thortveitite-related L phase, (Zn,Mn)2V2O7-
dc.typeArticle-
dc.scopusid7005635256-
dc.scopusid7103389283-
dc.scopusid7003754102-
dc.scopusid15834435500-
dc.scopusid8698333400-
dc.affiliationKnowles, K.M., Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom-
dc.affiliationVickers, M.E., Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom-
dc.affiliationSil, A., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India-
dc.affiliationHan, Y.-H., Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom-
dc.affiliationJaffrenou, P., Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom, Laboratoire D'Etude des Microstructures, ONERA-CNRS, Boit̃e Postale 72, 92322 Chat̃illon CEDEX, France-
dc.description.correspondingauthorKnowles, K. M.; Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom; email: kmk10@cam.ac.uk-
Appears in Collections:Journal Publications [MT]

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