Journal
CERAMICS INTERNATIONAL
Volume 34, Issue 3, Pages 671-673Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2006.12.014
Keywords
powders, chemical preparation; X-ray methods; niobates; perovskites
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Firstly, fresh niobium, hydroxide was precipitated from NbF5 solution using an aqueous ammonium hydroxide under basic conditions. Then a simple procedure of mixing potassium (or sodium) and niobium hydroxides together and heating at a low temperature (<400 degrees C) produced KNbO3 (KN) or NaNbO3 (NN) powders. This is the lowest temperature so far reported for the formation of these phases. The phase content and lattice parameters are determined by X-ray diffraction (XRD). The average particle size and morphology were studied by scanning electron microscopy (SEM). (c) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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