Structural and electrical properties of lanthanide substituted-bismuth titanate prepared by low-temperature combustion synthesis

Al-Amani, Umar and Srimala , Sreekantan and Ahmad Fauzi , Mohd Noor and Khairunisak , Abd Razak and Satoshi , Tanaka and Keizo , Uematsu (2012) Structural and electrical properties of lanthanide substituted-bismuth titanate prepared by low-temperature combustion synthesis. Structural and Electrical Properties of Lanthanide substituted-Bismuth Titanate Prepared by Low-Temperature Combustion Synthesis, 545. pp. 279-284. ISSN 10.4028/www.scientific.net/AMR.545

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Abstract

This paper elucidates the structural and electrical properties of Bi4Ti3O12 (BIT), Bi3.25Nd0.75Ti3O12 (BNT075) and Bi3.25La0.75Ti3O12 (BLT075) compounds that were primarily prepared by a novel combustion route at temperature as low as 300oC. Single crystalline phase of bismuth-layered perovskite structure was obtained directly after combustion without calcination. Xray diffraction and Raman spectra analysis showed the phase transition from orthorhombic to tetragonal symmetry with substituting compounds. Compared to BIT, the Curie temperature at maximum dielectric peak of BNT075 and BLT075 decreased to lower values of 434oC and 365oC, respectively. The loss tangen for corresponding substitution compounds were 5 times lower than that of BIT. Besides, BNT075 resulted in large remanent polarization (2Pr) and coercive field (Ec) values of 19μC/cm2 and 45kV/cm, respectively, while 17.6μC/cm2 and 42kV/cm for BLT075.

Item Type:	Article
Uncontrolled Keywords:	combustion, structure, dielectric, ferroelectric, lanthanides
Subjects:	T Technology > T Technology (General)
Divisions:	Faculty of Engineering Technology > Department of Manufacturing Engineering Technology
Depositing User:	Dr. Umar Al-Amani Hj Azlan
Date Deposited:	09 Oct 2013 08:58
Last Modified:	28 May 2015 04:06
URI:	http://eprints.utem.edu.my/id/eprint/9748
Statistic Details:	View Download Statistic

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