The homogeneity range of lyonsite-type phase existing in the CrVO4 - Co3V2O8 system |
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Authors: | Maria Kurzawa Monika Bosacka Elzbieta Filipek Izabella Rychlowska-Himmel |
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Institution: | (1) Department of Inorganic and Analytical Chemistry, Szczecin University of Technology, 71 - 065 Szczecin, Poland |
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Abstract: | In the work presented here, the way of obtaining the phase with general formula Co3+1.5xCr2–x(VO4)4 (0 ≤ × < 0.4) is demonstrated. A new phase is detected in CrVO4 - Co3V2O8 that is formed in one of the intersection of the ternary CoO - V2O5 - Cr2O3 system. Monophasic Co3Cr2(VO4)4 (Co3+1.5xCr2−x(VO4)4, where × = 0) was obtained from both a mixture comprising CrVO4 and Co3V2O8 as well as from the mixture of CoV2O6 with CoCr2O4. The Co3+1.5xCr2−x(VO4)4 is isotypic with the those demonstrating the lyonsite-type structure. The temperature of melting for the new compound was
established using the DTA methods.
![MediaObjects/11532_2009_6_Fig1_HTML.jpg](/content/x70l26g6725m2233/MediaObjects/11532_2009_6_Fig1_HTML.jpg) |
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Keywords: | Lyonsite Solid state reaction Cobalt(II) vanadate(V) Chromium(III) vanadate(V) Co3+1 5xCr2− x(VO4)4 (0 ≤ × < 0 4) |
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