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Bi4Ti3O12–5BiFeO3 Aurivillius intergrowth: Structural and ferroelectric properties

Preethi Meher, KRS and Varma, KBR (2009) Bi4Ti3O12–5BiFeO3 Aurivillius intergrowth: Structural and ferroelectric properties. In: Journal of Applied Physics, 106 (12). p. 124103.

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Aurivillus intergrowth Bi4Ti3O12–5BiFeO3 was demonstrated to be ferroelectric that evoked the possibility of achieving high temperature magnetoelectric property in this family of compounds. X-ray diffraction studies confirmed its structure to be orthorhombic [Fmm2; a = 5.5061(11) Å, b = 5.4857(7) Å, c = 65.742(12) Å]. However, transmission electron microscopy established the random incidence of intergrowth at nanoscale corresponding to n = 6 and n = 7 members of the Aurivillius family. Diffuse ferroelectric orthorhombic to paraelectric tetragonal phase transition around 857 K was confirmed by dielectric and high temperature x-ray diffraction studies. Polarization versus electric field hysteresis loops associated with 2Pr of 5.2 μC/cm2 and coercive field of 42 kV/cm were obtained at 300 K.

Item Type: Journal Article
Publication: Journal of Applied Physics
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 03 Jan 2012 10:14
Last Modified: 03 Jan 2012 10:14
URI: http://eprints.iisc.ac.in/id/eprint/43018

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