Lanfredi, S.Cardoso, C. X.Nobre, MAL2014-05-202014-05-202004-09-25Materials Science and Engineering B-solid State Materials For Advanced Technology. Lausanne: Elsevier B.V. Sa, v. 112, n. 2-3, p. 139-143, 2004.0921-5107http://hdl.handle.net/11449/40061Nanostructured KSr2Nb5O15 oxide was synthesized by the polymeric precursor method, a chemical synthesis route based on the Pechini's method. The X-ray diffraction (XRD) pattern of the calcined powder at 1150 degreesC were performed in the angular range 5 less than or equal to 20 less than or equal to 120degrees with a 0.02degrees step and a fixed counting time of 30 s. The XRD data were analyzed by the Rietveld refinements using the FullProf software. The results C showed a tetragonal system with the tetragonal tungsten bronze structure (TTB) type (a = 12.4585 (2) Angstrom and c = 3.9423 (6) Angstrom, V = 611,90 (2) Angstrom). In this work, the sites occupancy by the K+ and Sr2+ cations on the TTB type structure were determined. The thermal parameters (B) were analyzed. (C) 2004 Elsevier B.V. All rights reserved.139-143engKSr2Nb5O15chemical synthesistetragonal tungsten bronzeRietveld methodArtigo10.1016/j.mseb.2004.05.021WOS:000223947200011Acesso restrito492194837482006572019286007045300000-0002-7772-2701