{"title":"凝胶法制备钼酸镨晶体生长","authors":"Sanjay Pandita , Vinay Hangloo , K.K. Bamzai , P.N. Kotru , Neera Sahni","doi":"10.1016/S1466-6049(01)00192-1","DOIUrl":null,"url":null,"abstract":"<div><p><span>Experiments for the growth of praseodymium<span> molybdate<span> crystals using a silica gel method of crystal growth in the system PrCl</span></span></span><sub>3</sub>–(NH<sub>4</sub>)<sub>6</sub>Mo<sub>7</sub>O<sub>24</sub>–NH<sub>4</sub>NO<sub>3</sub>–HNO<sub>3</sub>–Na<sub>2</sub>SiO<sub>3</sub> are reported. The Energy Dispersive Analysis of X-rays (EDAX) results suggest the crystals to be praseodymium heptamolybdate of the type Pr<sub>2</sub>Mo<sub>7</sub>O<sub>24</sub>. The crystals assumed varied morphologies, including spherulites, single crystal platelets, multifaceted and coalesced crystals. Some crystals exhibited a twinned structure. The spherulitic morphologies resulted from either the aggregation of crystals joining in a spherical envelope or the formation of an interpenetrating type with complex twinning. The layered structure on the crystal surfaces suggest that the crystals grew by two-dimensional spreading and a pile-up of layers.</p></div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 675-680"},"PeriodicalIF":0.0000,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00192-1","citationCount":"6","resultStr":"{\"title\":\"Crystal growth of praseodymium molybdate by gel method\",\"authors\":\"Sanjay Pandita , Vinay Hangloo , K.K. Bamzai , P.N. Kotru , Neera Sahni\",\"doi\":\"10.1016/S1466-6049(01)00192-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Experiments for the growth of praseodymium<span> molybdate<span> crystals using a silica gel method of crystal growth in the system PrCl</span></span></span><sub>3</sub>–(NH<sub>4</sub>)<sub>6</sub>Mo<sub>7</sub>O<sub>24</sub>–NH<sub>4</sub>NO<sub>3</sub>–HNO<sub>3</sub>–Na<sub>2</sub>SiO<sub>3</sub> are reported. The Energy Dispersive Analysis of X-rays (EDAX) results suggest the crystals to be praseodymium heptamolybdate of the type Pr<sub>2</sub>Mo<sub>7</sub>O<sub>24</sub>. The crystals assumed varied morphologies, including spherulites, single crystal platelets, multifaceted and coalesced crystals. Some crystals exhibited a twinned structure. The spherulitic morphologies resulted from either the aggregation of crystals joining in a spherical envelope or the formation of an interpenetrating type with complex twinning. The layered structure on the crystal surfaces suggest that the crystals grew by two-dimensional spreading and a pile-up of layers.</p></div>\",\"PeriodicalId\":100700,\"journal\":{\"name\":\"International Journal of Inorganic Materials\",\"volume\":\"3 7\",\"pages\":\"Pages 675-680\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00192-1\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Inorganic Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1466604901001921\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Inorganic Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1466604901001921","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Crystal growth of praseodymium molybdate by gel method
Experiments for the growth of praseodymium molybdate crystals using a silica gel method of crystal growth in the system PrCl3–(NH4)6Mo7O24–NH4NO3–HNO3–Na2SiO3 are reported. The Energy Dispersive Analysis of X-rays (EDAX) results suggest the crystals to be praseodymium heptamolybdate of the type Pr2Mo7O24. The crystals assumed varied morphologies, including spherulites, single crystal platelets, multifaceted and coalesced crystals. Some crystals exhibited a twinned structure. The spherulitic morphologies resulted from either the aggregation of crystals joining in a spherical envelope or the formation of an interpenetrating type with complex twinning. The layered structure on the crystal surfaces suggest that the crystals grew by two-dimensional spreading and a pile-up of layers.