Study of the Solid State Reactions between (La,Sr)(Ga,Mg)O3 and (La,Sr)MnO3, (La,Ca)CrO3, and Ni
β Scribed by M. Rozumek; P. Majewski; T. Maldener; F. Aldinger
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 549 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0933-5137
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β¦ Synopsis
The reactions between Sr and Mg substituted LaGaO 3 , Sr substituted LaMnO 3 , Ca substituted LaCrO 3 , and Ni annealed at 650 and 1000 8C for up to 1000 h have been studied. The experiments show that solid state reactions between the original phases occur forming additional compounds, for example LaSrGa 3 O 7 , LaSrGaO 4 , La 4 Ga 2 O 9 , and Ca 2 Ga 2 O 5 . In addition, the chemical composition of LaGaO 3 changes during the heat treatments. At 650 8C significant solubility of Cr and Ca in LaGaO 3 have been observed. The solid solubility of Mn and Ni in LaGaO 3 is moderate.
Das wechselseitige Reaktionsverhalten von Sr-und Mg-dotiertem LaGaO 3 , Sr-dotiertem LaMnO 3 , Ca-dotiertem LaCrO 3 sowie Ni wurde bei Temperaturen von 650 und 1000 8C und fu Γr Zeiten bis zu 1000 h untersucht. Es hat sich gezeigt, dass Festko Γrperreaktionen zwischen den urspru Γnglichen Phasen auftreten und dabei weitere Verbindungen gebildet werden, z.
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