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Synthesis and Rietveld refinements of new ceramics Sr2CaFe2WO9 and Sr2PbFe2TeO9 perovskites

Published online by Cambridge University Press:  15 March 2018

Abdelhadi El Hachmi ,
Y. Tamraoui ,
Bouchaib Manoun ,
R. Haloui ,
M.A. Elaamrani ,
I. Saadoune ,
L. Bih  and
P. Lazor
Abdelhadi El Hachmi
Affiliation:
Univ Hassan 1er, Laboratoire des Sciences des Matériaux, des Milieux et de la modélisation (LS3M), 25000 Khouribga, Morocco
Y. Tamraoui
Affiliation:
Univ Hassan 1er, Laboratoire des Sciences des Matériaux, des Milieux et de la modélisation (LS3M), 25000 Khouribga, Morocco Materials Science and nano–engineering (MSN), University Mohammed VI Polytechnic, Lot 660 Hay Moulay Rachid, 43150 Ben Guerir, Morocco
Bouchaib Manoun*
Affiliation:
Univ Hassan 1er, Laboratoire des Sciences des Matériaux, des Milieux et de la modélisation (LS3M), 25000 Khouribga, Morocco Materials Science and nano–engineering (MSN), University Mohammed VI Polytechnic, Lot 660 Hay Moulay Rachid, 43150 Ben Guerir, Morocco
R. Haloui
Affiliation:
Univ Hassan 1er, Laboratoire des Sciences des Matériaux, des Milieux et de la modélisation (LS3M), 25000 Khouribga, Morocco
M.A. Elaamrani
Affiliation:
Univ Hassan 1er, Laboratoire des Sciences des Matériaux, des Milieux et de la modélisation (LS3M), 25000 Khouribga, Morocco
I. Saadoune
Affiliation:
Materials Science and nano–engineering (MSN), University Mohammed VI Polytechnic, Lot 660 Hay Moulay Rachid, 43150 Ben Guerir, Morocco LCME, FST Marrakech, University Cadi Ayyad, Av. A. Khattabi, 40000 Marrakech, Morocco
L. Bih
Affiliation:
Equipe de Physico–Chimie de la Matière Condensée, PCMC, Faculté des Sciences de Meknès, Université Moulay Ismail, Morocco
P. Lazor
Affiliation:
Department of Earth Sciences, Uppsala University, SE–752 36, Uppsala, Sweden
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

Ceramics of Sr2CaFe2WO9 and Sr2PbFe2TeO9 double perovskites have been prepared in polycrystalline form by solid-state technique, in the air. The crystalline structure was analyzed using X-ray powder diffraction (XRPD) at room temperature. Rietveld analysis of XRPD patterns show that both compounds adopt a tetragonal structure with space group I4/m, with unit cell parameters a = 5.5453(1) Å, c = 7.8389(1) Å for Sr2CaFe2WO9, and a = 5.5994(15) Å, c = 7.8979(30) Å for Sr2PbFe2TeO9. A certain degree of anti-site disordering of W and/or Te and Fe on the B –sites have been detected, indicating the presence of a partial amount of W and/or Te at Fe positions and vice versa.

Keywords

Sr2CaFe2WO9Sr2PbFe2TeO9 crystal structureX-ray diffraction
Type
Technical Article
Information
Powder Diffraction , Volume 33 , Issue 2 , June 2018 , pp. 134 - 140
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Copyright
Copyright © International Centre for Diffraction Data 2018 

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