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http://dx.doi.org/10.4191/KCERS.2003.40.5.434

Preparation and Characterization of La0.8Ca0.2MnO3  

정미원 (성신여자대학교 화학과)
이지윤 (성신여자대학교 화학과)
김현정 (성신여자대학교 화학과)
Publication Information
Journal of the Korean Ceramic Society / v.40, no.5, 2003 , pp. 434-440 More about this Journal
Abstract
The powders of L $a_{0.8}$C $a_{0.2}$Mn $O_3$ Colossal Magnetoresistance (CMR) materials were synthesized by sol-gel process. Lanthanum(H), Calcium(II) and Manganese(III) 2,4-Pentanedionate were dissolved in a mixed binary solution consisted of propionic acid and methanol with PEG (15 wt%) aqueous solution. The progress of reactions was monitored by FT-IR spectroscopy. The Lao scao.2Mn03 gel powders were annealed at various temperatures. The structural changes were investigated by FT-IR, CP/MAS $^{ 13}$C solid state NMR spectroscopy and XRD. The thermochemical property, particle characterization, microstructure of sintered sample, and cation composition of gel powder were studied by TG/DTA, FE-SEM and ICP-AES. The magnetic characterizations were identified through measurement of magnetic moment by VSM.
Keywords
${La_{0.8}}{Ca_{0.2}}{MnO_3}$; FT-IR; $CP/MAS ^{13}$C NMR; ICP-AES; VSM;
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Times Cited By KSCI : 2  (Citation Analysis)
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