ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Two nanopowders with nominal compositions (Ca0.7La0.3)MnO3 (CLM) and(Ca0.7La0.3)(Mn0.8Ce0.2)O3 (CLMC) were synthesized by a modified glycine/nitrate procedure. XRDanalysis revealed binary phase mixture in both samples. The influence of La and Ce on unit cellparameters, atom positions, and average bond distances were analyzed. According to these resultsand refined occupation factors of La and Ca, as well as quantitative phase analysis it was found thatthe CLM sample consists of 85 mass.% of Ca0.62La0.38MnO3 and 15 mass.% of Ca0.99La0.01MnO3,while the CLMC sample consists of 70 mass.% of Ca0.58La0.42MnO3 and 30 mass.% of CeO2.Microstructure size-strain analysis was performed and the Rietveld refinement gave crystallites ofabout 100 Å. TEM images showed particle sizes of about 100-500 Å
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.555.231.pdf