M. Jenhi , E.H. El Ghadraoui , H. Bali , M. El Aatmani , M. Rafiq
{"title":"混合氧化物(CMO)煅烧生成钙钛矿Pb(Fe1/2Nb1/2)O3的反应机理","authors":"M. Jenhi , E.H. El Ghadraoui , H. Bali , M. El Aatmani , M. Rafiq","doi":"10.1016/S0992-4361(98)80003-9","DOIUrl":null,"url":null,"abstract":"<div><p>A calcining at 300°C and sintering process were proposed to obtain a pure perovskite phase Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> from a 4PbO/Nb<sub>2</sub>O<sub>5</sub>/Fe<sub>2</sub>O<sub>3</sub> mixture, which is calcined at 300°C for several days and sintered at various temperatures for 2h; the resultant powder was air quenched. The X-ray powder diffraction pattern of the sintered sample is carefully analyzed to identify intermediate phases. The effects of calcining at 300°C and sintering on obtaining PFN are based on the deformation of Pb<sub>5</sub>Fe<sub>4</sub>Nb<sub>4</sub>O<sub>21</sub>. A reaction mechanism for the calcining cycle of Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> is proposed.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 3","pages":"Pages 221-230"},"PeriodicalIF":0.0000,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80003-9","citationCount":"9","resultStr":"{\"title\":\"Reaction mechanism in the formation of perovskite Pb(Fe1/2Nb1/2)O3 by calcining of mixed oxides (CMO)\",\"authors\":\"M. Jenhi , E.H. El Ghadraoui , H. Bali , M. El Aatmani , M. Rafiq\",\"doi\":\"10.1016/S0992-4361(98)80003-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A calcining at 300°C and sintering process were proposed to obtain a pure perovskite phase Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> from a 4PbO/Nb<sub>2</sub>O<sub>5</sub>/Fe<sub>2</sub>O<sub>3</sub> mixture, which is calcined at 300°C for several days and sintered at various temperatures for 2h; the resultant powder was air quenched. The X-ray powder diffraction pattern of the sintered sample is carefully analyzed to identify intermediate phases. The effects of calcining at 300°C and sintering on obtaining PFN are based on the deformation of Pb<sub>5</sub>Fe<sub>4</sub>Nb<sub>4</sub>O<sub>21</sub>. A reaction mechanism for the calcining cycle of Pb(Fe<sub>1/2</sub> Nb<sub>1/2</sub>)O<sub>3</sub> is proposed.</p></div>\",\"PeriodicalId\":100507,\"journal\":{\"name\":\"European Journal of Solid State and Inorganic Chemistry\",\"volume\":\"35 3\",\"pages\":\"Pages 221-230\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80003-9\",\"citationCount\":\"9\",\"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/S0992436198800039\",\"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/S0992436198800039","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Reaction mechanism in the formation of perovskite Pb(Fe1/2Nb1/2)O3 by calcining of mixed oxides (CMO)
A calcining at 300°C and sintering process were proposed to obtain a pure perovskite phase Pb(Fe1/2 Nb1/2)O3 from a 4PbO/Nb2O5/Fe2O3 mixture, which is calcined at 300°C for several days and sintered at various temperatures for 2h; the resultant powder was air quenched. The X-ray powder diffraction pattern of the sintered sample is carefully analyzed to identify intermediate phases. The effects of calcining at 300°C and sintering on obtaining PFN are based on the deformation of Pb5Fe4Nb4O21. A reaction mechanism for the calcining cycle of Pb(Fe1/2 Nb1/2)O3 is proposed.
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