Studied on Structural Characterization of Lanthanum Doped Barium Titanium Ceramics

Nur Farahin Abdul Hamid; Rozana Aina Maulat Osman; Mohd Sobri Idris; T.Q. Tan

doi:10.4028/www.scientific.net/MSF.819.198

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HomeMaterials Science ForumMaterials Science Forum Vol. 819Studied on Structural Characterization of...

Studied on Structural Characterization of Lanthanum Doped Barium Titanium Ceramics

Abstract:

La-doped barium titanate (BaTiO₃) was prepared using conventional solid state synthesis route. All peaks for sample x=0 are approaching the phase pure of BaTiO₃ structure with tetragonal crystal structure (P4mm). Sintering of pressed powder are performed at 1300oC, 1400oC and 1450oC for overnight for pure BaTiO₃ and 1350oC for 3 days for BaTiO₃ doped lanthanum with intermittent grinding. Phase transition was studied by different x composition. The changes in the crystal structure of the composition x=0.1 and 0.2 were detected by using X-ray diffraction (XRD). The phase changes between tetragonal-cubic and cubic-tetragonal depending on the temperature. Rietveld Refinement analysis is carried out to determine the lattice parameter and unit cell for BaTiO₃.

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Materials Science Forum (Volume 819)

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198-203

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.819.198

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Online since:

June 2015

Authors:

Nur Farahin Abdul Hamid, Rozana Aina Maulat Osman, Mohd Sobri Idris, T.Q. Tan

Keywords:

Barium Titanate, Relaxor Ferroelectric, Rietveld Analysis, X-Ray Diffraction

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