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Nonlinear dielectric response of BaBi4Ti4O15 ceramics

Kumar, Sunil and Ochoa, DA and Garcia, JE and Varma, KBR (2013) Nonlinear dielectric response of BaBi4Ti4O15 ceramics. In: 57th DAE Solid State Physics Symposium, 3–7 December 2012, Indian Institute of Technology, Bombay, Mumbai, India, pp. 998-999.

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Official URL: http://dx.doi.org/10.1063/1.4791379

Abstract

Nonlinear dielectric response of BaBi4Ti4O15 ceramics synthesized via the conventional solid-state reaction route has been monitored over a wide range of electric field strengths (E-0 = 0.5 - 5 kV/cm). Dielectric permittivity was found to increase linearly within the range of applied field. Rayleigh relations were employed to interpret the nonlinear dielectric response and the contribution of irreversible domain wall motion to the macroscopic permittivity was separated. The values of room temperature Rayleigh dielectric coefficient (alpha) and relative initial permittivity (epsilon'(init)) were found to be 2.28 +/- 0.02 cm/kV and 146.10 +/- 0.07, respectively. A reasonable agreement between the simulated and measured polarization-electric field (P-E) hysteresis loops was observed at an applied electric field of 5 kV/cm.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to American Institute of Physics.
Keywords: BaBi4Ti4O15; Nonlinear Dielectric Properties; Relaxor Ferroelectrics
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Francis Jayakanth
Date Deposited: 23 Jun 2013 09:39
Last Modified: 23 Jun 2013 09:39
URI: http://eprints.iisc.ac.in/id/eprint/46769

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