{"title":"Chemistry of interactions in the La2O3-MO(MCO3)-Mn2O3, M = Ca, Sr, Ba, Cd systems","authors":"B.V. Slobodin, L.L. Surat, V.G. Vassiliev, G.P. Schveikin, A.P. Nossov","doi":"10.1016/S0992-4361(98)80190-2","DOIUrl":null,"url":null,"abstract":"<div><p>The sequence of phase transitions in the system La<sub>2</sub>O<sub>3</sub>-MO(MCO<sub>3</sub>)Mn<sub>2</sub>O<sub>3</sub>, (M=Ca, Sr, Ba, Cd) and the span range of La<sub>1−x</sub>M<sub>x</sub>MnO<sub>3±δ</sub> solid solutions formed were studied. It is demonstrated that interaction begins at 650°C due to formation of divalent metal manganites. Just simultaneously as a result of oxidation-reduction processes and structural transformations the synthesis of small quantities of solid solutions takes place, which is kinetically favoured in the case of smaller divalent metal cations. The chemical transformation finishes at 1200°C. The values of x at all systems are near 0,35. The absence of CdMnO<sub>3</sub> composition in the system CdO-MnO is proved.</p></div>","PeriodicalId":100507,"journal":{"name":"European Journal of Solid State and Inorganic Chemistry","volume":"35 2","pages":"Pages 111-115"},"PeriodicalIF":0.0000,"publicationDate":"1998-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0992-4361(98)80190-2","citationCount":"6","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/S0992436198801902","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
The sequence of phase transitions in the system La2O3-MO(MCO3)Mn2O3, (M=Ca, Sr, Ba, Cd) and the span range of La1−xMxMnO3±δ solid solutions formed were studied. It is demonstrated that interaction begins at 650°C due to formation of divalent metal manganites. Just simultaneously as a result of oxidation-reduction processes and structural transformations the synthesis of small quantities of solid solutions takes place, which is kinetically favoured in the case of smaller divalent metal cations. The chemical transformation finishes at 1200°C. The values of x at all systems are near 0,35. The absence of CdMnO3 composition in the system CdO-MnO is proved.
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