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Sol-gel derived Nd1/3La1/3Ca1/3MnO3: Phase evolution and preparation of films and nanopowders
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry.
2007 (English)In: Journal of Materials Research, ISSN 0884-2914, E-ISSN 2044-5326, Vol. 22, no 6, 1737-1743 p.Article in journal (Refereed) Published
Abstract [en]

An all-alkoxide sol-gel route to the formation of Nd1/3La1/3Ca1/3MnO3 thin films and powders has been developed. The microstructural evolution on heat treatment of the gel to yield the perovskite oxide was monitored by means of thermogravimetric analysis-differential scanning calorimetry, powder x-ray diffraction (XRD), Fourier transform infrared spectroscopy, and transmission electron microscopy (TEM)-energy dispersive spectroscopy (EDS). It was found that the amorphous gel consists of hydrated oxo-carbonate without organic residues, and on heating it decomposes in several steps, finally forming single-phase perovskite at 680 degrees C. Further heating results in only slight changes in the cell parameters and crystal growth. Films were prepared by spin coating, followed by heat treatment in air to a temperature of 800 degrees C, and studied by scanning electron microscopy, TEM-EDS, and XRD. Films on Al2O3 were more porous, while films on Pt-TiO2-SiO2-Si were rather dense and consisted of areas with different crystal orientations.

Place, publisher, year, edition, pages
2007. Vol. 22, no 6, 1737-1743 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-150842DOI: 10.1557/JMR.2007.0221ISI: 000247053600036OAI: oai:DiVA.org:uu-150842DiVA: diva2:409084
Available from: 2011-04-07 Created: 2011-04-06 Last updated: 2017-12-11Bibliographically approved

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