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Effect of alumina precursor on the synthesis of LaAlO3 nanopowders by reverse micelle processing

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Abstract

The effect of alumina precursor on the synthesis of nanosized LaAlO3 powders by reverse micelle process has been studied. The synthesized and calcined powders were characterized by thermogravimetry-differential thermal analysis, X-ray diffraction analysis and transmission electron microscopy. Differential thermal analysis showed that LaAlO3 phase transformation occurs at 830 °C and 866 °C for Al(NO3)3 and AlCl3 precursor respectively. With Al(NO3)3 as starting precursor, well-crystallized LaAlO3 phase was formed at lower temperature. Use of AlCl3 as precursor resulted in bigger particle formation (∼41 nm) while Al(NO3)3 forms much smaller particles (∼28 nm) as confirmed by transmission electron microscopy.

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Authors and Affiliations

  1. Department of Physics, Yeungnam University, Gyeongsan-si, Gyeonguk, 712-749, Korea

    J. Chandradass, Yu-Jung Cha & Ki Hyeon Kim

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  1. J. Chandradass
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  2. Yu-Jung Cha
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  3. Ki Hyeon Kim
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Correspondence to Ki Hyeon Kim.

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Chandradass, J., Cha, YJ. & Kim, K.H. Effect of alumina precursor on the synthesis of LaAlO3 nanopowders by reverse micelle processing. Met. Mater. Int. 15, 1045–1048 (2009). https://doi.org/10.1007/s12540-009-1045-0

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  • DOI: https://doi.org/10.1007/s12540-009-1045-0

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