Relaxor ferroelectric behavior and structural aspects of SrNaBi 2Nb 3O 12 ceramics

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Title:	Relaxor ferroelectric behavior and structural aspects of SrNaBi 2Nb 3O 12 ceramics
Author:	Kumar, Sunil; Ochoa Guerrero, Diego A.; García García, José Eduardo; Varma, K.B.R
Other authors:	Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius
Abstract:	The SrNaBi2Nb3O12 (SNBN) powder was prepared via the conventional solid-state reaction method. X-ray structural studies confirmed the phase to be a three-layered member of the Aurivillius family of oxides. The SNBN ceramics exhibited the typical characteristics of relaxor ferroelectrics, associated with broad and dispersive dielectric maxima. The variation of temperature of dielectric maxima (Tm) with frequency obeyed the Vogel–Fulcher relationship. Relaxor behavior was believed to be arising from the cationic disorder at A-site. Pinched ferroelectric hysteresis loops were observed well above Tm.
Subject(s):	-Àrees temàtiques de la UPC::Física -Dielectrics -Ferroelectricity -Aurivillius -Dielectric maxima -Dispersive dielectrics -Ferroelectric hysteresis loop -Relaxor behavior -Relaxor ferroelectric -Solid state reaction method -Structural aspects -Vogel-Fulcher -X-ray structural study -Dielèctrics -Ferroelectricitat
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
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