Sol-gel synthesis of Ln2(Ln = La, Nd)Ti2O7
- 1 October 1992
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 7 (10) , 2859-2863
- https://doi.org/10.1557/jmr.1992.2859
Abstract
Lanthanum and neodymium titanates were prepared by a sol-gel route. Synthesis of La2Ti2O7 from pure alkoxide precursors yielded an intermediate perovskite type phase, La(1–x)TiO3, which partially transformed to La2Ti2O7 on heating to 1500 °C. Substitution of the lanthanum acetylacetonate for alkoxide precursor yielded La2Ti2O7 without any intermediate phase at a very low temperature of 700 °C. Sintering of the La2Ti2O7 gel powder yielded a highly dense ceramic with ∼97% theoretical density. Similar sintering treatment resulted in ∼92% theoretical density for Nd2Ti2O7.Keywords
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