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JMP> Vol.6 No.1, January 2015
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Crystal Structure of BaxSr1-xTiO3 Fine Powder

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DOI: 10.4236/jmp.2015.61009    2,348 Downloads   2,732 Views   Citations
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Natheer B. Mahmood1, Emad K. Al-Shakarchi1*, Brahim Elouadi2, Xavier Feaugas2

Affiliation(s)

1Physics Department, College of Science, Al-Nahrain University, Baghdad, Iraq.
2Laboratoire des Sciences de l’Ingénieur pour l’Environnement, Université de La Rochelle, La Rochelle, France.

ABSTRACT

Various compositions of the system BaxSr1-xTiO3 (BST) have been elaborated both as fine powders and ceramic monoliths, using the co-precipitation route within a warmed supersaturated solution of oxalic acid. The appropriate stoichiometry was determined from the mixtures of precisely titrated aqueous solutions of cations chlorides (SrCl2, BaCl2, and TiCl4). The reason of this process was to apply low sintering temperature in production of BST samples with ultra-fine powders. These powders primarily calcined at (850°C) for (5 hr) were used to elaborate ceramics after pellets sintering at (1200°C) during (8 hrs). Indeed, XRD patterns were confirmed that the samples are a pure phase and a perovskite cubic structural type at (x = 0, 0.5, 0.6). Whereas, (x = 0.7, 0.8, 0.9, 1) showed a tetragonal phase. There is agreement between the FTIR and XRD analysis, by the relation of the wave vector (K) and lattice constant. It was deduced a stimulated relation between (x) and (K). The results of TEM, they were clear that the lowest particle sizes investigated of BST powders nearly (36 - 50 nm).

KEYWORDS

Barium Strontium Titanate, Oxalate Co-Precipitation Method, X-Ray Diffraction, Transmission Electron Microscope, Ultra-Fine Powder

Cite this paper

Mahmood, N. , Al-Shakarchi, E. , Elouadi, B. and Feaugas, X. (2015) Crystal Structure of BaxSr1-xTiO3 Fine Powder. Journal of Modern Physics, 6, 70-77. doi: 10.4236/jmp.2015.61009.

Conflicts of Interest

The authors declare no conflicts of interest.

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