Published 2010 | Version v1
Journal article Metadata-only

Crystallographic analysis of the solid solution of iron doped potassium strontium niobate with tetragonal tungsten bronze structure

Creators

  • 1. UNESP, Presidente Prudente, SP (Brazil). Faculdade de Ciencias e Tecnologia. Dept. de Fisica, Quimica e Biologia
  • 2. Universidade Estadual de Ponta Grossa (DQ/UEPG), PR (Brazil). Dept. de Quimica

Description

Solid solution of iron doped potassium strontium niobate with KSr2(FeNb4)O15-δ stoichiometry was prepared by high efficiency ball milling method. Structural characterization was carried out by X-ray diffraction. Crystalline structure was analyzed by the Rietveld refinements using the FullProf software. The results showed a tetragonal system with the tetragonal tungsten bronze structure - TTB (a = 12.4631 (2) A and c = 3.9322 (6) A, V = 610.78 (2) A3). In this work, the sites occupancy by the K+, Sr2+ and Fe3+ cations on the TTB structure were determined. NbO6 polyhedra distortion and its correlation with the theoretical polarization are discussed. (author)

Availability note (English)

Available from http://www.scielo.br/pdf/qn/v33n5/12.pdf

Additional details

Additional titles

Original title (Portuguese)
Analise cristalografica da solucao solida com estrutura tipo Tungstenio Bronze de niobato de potassio e estroncio dopado com ferro

Identifiers

URL
http://www.scielo.br/pdf/qn/v33n5/12.pdf;

Publishing Information

Journal Title
Quimica Nova On-Line
Journal Volume
33
Journal Issue
5
Journal Page Range
p. 1071-1076
ISSN
1678-7064

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
41126385
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
DOPED MATERIALS; NIOBATES; NIOBIUM; NIOBIUM OXIDES; POTASSIUM; SODIUM TUNGSTEN BRONZE; STOICHIOMETRY; STRONTIUM; TUNGSTEN; X-RAY DIFFRACTION
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKALI METALS; ALKALINE EARTH METALS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; MATERIALS; METALS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; REFRACTORY METALS; SCATTERING; SODIUM COMPOUNDS; SODIUM OXIDES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; TUNGSTEN COMPOUNDS; TUNGSTEN OXIDES