Alkoxide Based Sol-Gel Processing of CMR Manganites

• We have prepared a soluble manganese alkoxide, and used in the first all-alkoxide synthesis of Ca, Sr, and Ba substituted lanthanum manganites. The phase development from gel to target oxide was monitored by TGA, DSC, powder-XRD, FT¨CIR spectroscopy, and TEM-EDS. Here we present the effect of dopant on the phase development. It was found that the dopants influence the temperature of complete oxide formation (¡Ý650¡ãC). The main difference in phase evolution was seen in the 300-600¡ãC range, where the formation of crystalline phases in trace quantities seemed to temporarily reduce the elemental homogeneity.

Ämnesord

NATURVETENSKAP  -- Kemi -- Oorganisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)

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Inorganic chemistry

Oorganisk kemi

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