Thermodynamic Modeling and Calculation of Phase Equilibria in the La-Sr-Mn-O System at Various Temperatures and Partial Pressures of Oxygen

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F01%3A00004758" target="_blank" >RIV/60461373:22310/01:00004758 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Thermodynamic Modeling and Calculation of Phase Equilibria in the La-Sr-Mn-O System at Various Temperatures and Partial Pressures of Oxygen
Original language description
The phase diagrams ln(PO2)-x and T-x of the La-Sr-Mn-O system were calculated for two selected cross sections, namely along the lines La1-xSrxMnOy and (La1-x Srx)2MnOy. For the former one, the perovskite phase La1-xSrxMnO3-d coexists with a stoichiometric hexagonal SrMnO3 and the solubility of Sr increases with increasing T and decreasing PO2, as d decreases. At even lower PO2, (La1-x Srx)2MnO4 and MnO are formed at the expense of La1-xSrxMnO3+d , whose stability field starts to shrink. Similarly, for the latter series the solubility of La in (La1-x Srx)2MnO4 increases from almost stoichiometric Sr2MnO4 (PO2~10-4, 1373 K) with decreasing PO2 to the entire range (PO2~10-13, 1373 K). The same effect is achieved by increasing T. The pseudothernary phase diagrams La2O3-SrO-MnOx were eventually constructed for selected values of T and PO2.
Czech name
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Czech description
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Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Development of Materials Science in Research and Education - 11th Joint Seminar
ISBN
80-85330-90-3
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
88-89
Publisher name
neznámý
Place of publication
Bratislava
Event location
Kežmarské Žleby
Event date
Jan 1, 2001
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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