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Studies of structural, dielectric, and impedance characteristics of Bi3.8Gd0.2Ti3O12 Aurivillius ceramic.

Authors :
Das, Sagarika
Choudhary, R. N. P.
Source :
Ferroelectrics; 2024, Vol. 618 Issue 1, p1-10, 10p
Publication Year :
2024

Abstract

In this article, the synthesis (through a mixed oxide route, calcination temperature = 850 °C, sintering temperature = 870 °C, for time= 6 h) and characterization (structure, dielectric, and electrical properties) of Gd modified bismuth titanate Bi<subscript>4</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript> of a chemical composition Bi<subscript>3.8</subscript>Gd<subscript>0.2</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript> of Aurivillius family in ceramic form have been reported. The development of an orthorhombic structure (with a minor secondary phase) with a space group B2ab has been confirmed by analyzing room temperature X-rays diffraction pattern/data. Studies of some electrical parameters like loss tangent, dielectric constant, electric impedance, and conductivity have provided valuable data and information on conduction mechanism, structure-properties relationship, etc., in the 25–500° C temperature range at different frequencies (1 kHz − 1MHz). The presence of grain, grain boundary is confirmed from the Nyquist plot. The Nyquist plot also confirms the existence of non-Debye relaxation in the material. The frequency and temperature significantly impact the material's various properties (dielectric and electrical). [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00150193
Volume :
618
Issue :
1
Database :
Complementary Index
Journal :
Ferroelectrics
Publication Type :
Academic Journal
Accession number :
174879634
Full Text :
https://doi.org/10.1080/00150193.2023.2271310