N. V. Sukachev, A. P. Shablinskii, M. G. Krzhizhanovskaya, R. S. Bubnova
{"title":"氧化锗酸盐Sm14(GeO4)2(BO3)6O8的热膨胀","authors":"N. V. Sukachev, A. P. Shablinskii, M. G. Krzhizhanovskaya, R. S. Bubnova","doi":"10.1134/S1087659624600650","DOIUrl":null,"url":null,"abstract":"<p>Thermal expansion of samarium oxoborogermanate Sm<sub>14</sub>(GeO<sub>4</sub>)<sub>2</sub>(BO<sub>3</sub>)<sub>6</sub>O<sub>8</sub> is studied by the method of high temperature powder X-ray diffraction in the temperature range of 30–1200°C. The coefficients of thermal expansion are calculated: α<sub>11</sub> = 9.59(12), α<sub>c</sub> = 7.56(13), α<sub><i>V</i></sub> = 26.74(30) × 10<sup>–6</sup>°C<sup>–1</sup> at 30°C; and α<sub><i>a</i></sub> = 14.44(12), α<sub>c</sub> = 10.74(13), α<sub><i>V</i></sub> = 39.61(28) × 10<sup>–6</sup> °C<sup>–1</sup> at 1200°C. A structural interpretation of the anisotropy of thermal expansion is carried out. With increasing temperature, the degree of anisotropy remains practically unchanged, the structure expands minimally along the <i>c</i> axis, and maximally in the <i>ab</i> plane, perpendicular to the preferred orientation of the BO<sub>3</sub> triangles in the crystal structure. The melting point of Sm<sub>14</sub>(GeO<sub>4</sub>)<sub>2</sub>(BO<sub>3</sub>)<sub>6</sub>O<sub>8</sub> is clarified.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 6","pages":"713 - 718"},"PeriodicalIF":0.8000,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermal Expansion of Oxoborogermanate Sm14(GeO4)2(BO3)6O8\",\"authors\":\"N. V. Sukachev, A. P. Shablinskii, M. G. Krzhizhanovskaya, R. S. Bubnova\",\"doi\":\"10.1134/S1087659624600650\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Thermal expansion of samarium oxoborogermanate Sm<sub>14</sub>(GeO<sub>4</sub>)<sub>2</sub>(BO<sub>3</sub>)<sub>6</sub>O<sub>8</sub> is studied by the method of high temperature powder X-ray diffraction in the temperature range of 30–1200°C. The coefficients of thermal expansion are calculated: α<sub>11</sub> = 9.59(12), α<sub>c</sub> = 7.56(13), α<sub><i>V</i></sub> = 26.74(30) × 10<sup>–6</sup>°C<sup>–1</sup> at 30°C; and α<sub><i>a</i></sub> = 14.44(12), α<sub>c</sub> = 10.74(13), α<sub><i>V</i></sub> = 39.61(28) × 10<sup>–6</sup> °C<sup>–1</sup> at 1200°C. A structural interpretation of the anisotropy of thermal expansion is carried out. With increasing temperature, the degree of anisotropy remains practically unchanged, the structure expands minimally along the <i>c</i> axis, and maximally in the <i>ab</i> plane, perpendicular to the preferred orientation of the BO<sub>3</sub> triangles in the crystal structure. The melting point of Sm<sub>14</sub>(GeO<sub>4</sub>)<sub>2</sub>(BO<sub>3</sub>)<sub>6</sub>O<sub>8</sub> is clarified.</p>\",\"PeriodicalId\":580,\"journal\":{\"name\":\"Glass Physics and Chemistry\",\"volume\":\"50 6\",\"pages\":\"713 - 718\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2025-03-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Glass Physics and Chemistry\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1087659624600650\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Glass Physics and Chemistry","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1087659624600650","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Thermal Expansion of Oxoborogermanate Sm14(GeO4)2(BO3)6O8
Thermal expansion of samarium oxoborogermanate Sm14(GeO4)2(BO3)6O8 is studied by the method of high temperature powder X-ray diffraction in the temperature range of 30–1200°C. The coefficients of thermal expansion are calculated: α11 = 9.59(12), αc = 7.56(13), αV = 26.74(30) × 10–6°C–1 at 30°C; and αa = 14.44(12), αc = 10.74(13), αV = 39.61(28) × 10–6 °C–1 at 1200°C. A structural interpretation of the anisotropy of thermal expansion is carried out. With increasing temperature, the degree of anisotropy remains practically unchanged, the structure expands minimally along the c axis, and maximally in the ab plane, perpendicular to the preferred orientation of the BO3 triangles in the crystal structure. The melting point of Sm14(GeO4)2(BO3)6O8 is clarified.
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Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.
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