E. Gallucci, C. Goutaudier, G. Boulon, M.T. Cohen-Adad
{"title":"KY(WO4)2单晶的生长:k20 - y2o3 -WO3三元体系中WO3富集区的研究。2 - KY(WO4)2结晶场","authors":"E. Gallucci, C. Goutaudier, G. Boulon, M.T. Cohen-Adad","doi":"10.1016/S0992-4361(98)80021-0","DOIUrl":null,"url":null,"abstract":"<div><p>In order to determinate the best crystal growth conditions for KY(WO<sub>4</sub>)<sub>2</sub> single-crystals, the investigation of the K<sub>2</sub>O-Y<sub>2</sub>O<sub>3</sub>-WO<sub>3</sub> ternary system was undertaken by the study of three isoplethic sections (K<sub>2</sub>W<sub>4</sub>O<sub>13</sub>-Y<sub>2</sub>O<sub>3</sub>, K<sub>2</sub>WO<sub>4</sub>-KY(WO<sub>4</sub>)<sub>2</sub>, K<sub>2</sub>W<sub>2</sub>O<sub>7</sub>-KY(WO<sub>4</sub>)<sub>2</sub>). The stability domain and the crystallisation field of the compound were then defined: KY(WO<sub>4</sub>)<sub>2</sub> is not stoichiometric and melts congruently for the composition 0.81(K<sub>2</sub>O.4WO<sub>3</sub>)−0.19Y<sub>2</sub>O<sub>3</sub> The low temperature phase belongs to the monoclinic system (s.g. C2/c) with a=10.65(1)Å, b=10.34(1)Å, c=7.54(1)Å, β=130.5(1)°. Its crystallisation field was delimited in temperature and composition: an α-KY(WO<sub>4</sub>)<sub>2</sub> crystal can grow if x<sub>Y2O3</sub>≤0.175.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 6","pages":"Pages 433-445"},"PeriodicalIF":0.0000,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80021-0","citationCount":"17","resultStr":"{\"title\":\"Growth of KY(WO4)2 single crystal: investigation of the WO3 rich region in the K2O-Y2O3-WO3 ternary system. 2 — The KY(WO4)2 crystallisation field\",\"authors\":\"E. Gallucci, C. Goutaudier, G. Boulon, M.T. Cohen-Adad\",\"doi\":\"10.1016/S0992-4361(98)80021-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In order to determinate the best crystal growth conditions for KY(WO<sub>4</sub>)<sub>2</sub> single-crystals, the investigation of the K<sub>2</sub>O-Y<sub>2</sub>O<sub>3</sub>-WO<sub>3</sub> ternary system was undertaken by the study of three isoplethic sections (K<sub>2</sub>W<sub>4</sub>O<sub>13</sub>-Y<sub>2</sub>O<sub>3</sub>, K<sub>2</sub>WO<sub>4</sub>-KY(WO<sub>4</sub>)<sub>2</sub>, K<sub>2</sub>W<sub>2</sub>O<sub>7</sub>-KY(WO<sub>4</sub>)<sub>2</sub>). The stability domain and the crystallisation field of the compound were then defined: KY(WO<sub>4</sub>)<sub>2</sub> is not stoichiometric and melts congruently for the composition 0.81(K<sub>2</sub>O.4WO<sub>3</sub>)−0.19Y<sub>2</sub>O<sub>3</sub> The low temperature phase belongs to the monoclinic system (s.g. C2/c) with a=10.65(1)Å, b=10.34(1)Å, c=7.54(1)Å, β=130.5(1)°. Its crystallisation field was delimited in temperature and composition: an α-KY(WO<sub>4</sub>)<sub>2</sub> crystal can grow if x<sub>Y2O3</sub>≤0.175.</p></div>\",\"PeriodicalId\":100507,\"journal\":{\"name\":\"European Journal of Solid State and Inorganic Chemistry\",\"volume\":\"35 6\",\"pages\":\"Pages 433-445\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80021-0\",\"citationCount\":\"17\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Solid State and Inorganic Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0992436198800210\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Solid State and Inorganic Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0992436198800210","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Growth of KY(WO4)2 single crystal: investigation of the WO3 rich region in the K2O-Y2O3-WO3 ternary system. 2 — The KY(WO4)2 crystallisation field
In order to determinate the best crystal growth conditions for KY(WO4)2 single-crystals, the investigation of the K2O-Y2O3-WO3 ternary system was undertaken by the study of three isoplethic sections (K2W4O13-Y2O3, K2WO4-KY(WO4)2, K2W2O7-KY(WO4)2). The stability domain and the crystallisation field of the compound were then defined: KY(WO4)2 is not stoichiometric and melts congruently for the composition 0.81(K2O.4WO3)−0.19Y2O3 The low temperature phase belongs to the monoclinic system (s.g. C2/c) with a=10.65(1)Å, b=10.34(1)Å, c=7.54(1)Å, β=130.5(1)°. Its crystallisation field was delimited in temperature and composition: an α-KY(WO4)2 crystal can grow if xY2O3≤0.175.
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