NDLI: Study of diffuse PhaseTransition behavior in Bi and Li Co-substituted barium titanate ceramics

Content Provider	Springer Nature Link
Author	Alkathy, Mahamoud S JamesRaju, K C
Copyright Year	2017
Abstract	The effect of Bi and Li co-substitution in BaTiO$_{3}$ ceramics on its structural, dielectric and ferroelectric properties has been investigated. Bi and Li co-substituted BaTiO$_{3}$ with general formula Ba$_{(1-x)}$(Bi,Li)$_{x}$TiO$_{3}$ (x = 0, 0.02, 0.04 and 0.08) is synthesized by solid state reaction method using microwave heating. The XRD patterns revealed that the single phase tetragonal structure with space group P4mm is formed. The Raman study also shows that the prepared samples have tetragonal symmetry. The frequency and temperature dependent dielectric study on the above set of ceramics were carried out at four different frequencies (1 kHz, 10 kHz, 100 kHz and 1 MHz) and in the temperature range of 30–250 °C. The results reveal that the samples are exhibiting diffused phase transition, and there is a clear deviation from normal Curie–Weiss law. The diffused phase transition property in Bi and Li co-substituted BaTiO$_{3}$ ceramics make it more attractive for technological applications. The diffuseness is analyzed using a phenomenological theory of diffuse ferroelectric phase transitions. The room temperature P-E hysteresis loops of all these ceramic samples are investigated. The results show that remnant and spontaneous polarization has decreased with an increase of Bi and Li concentrations. This could be the result of an increased in domain pinning.
Starting Page	63
Ending Page	73
Page Count	11
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	38
Issue Number	1
e-ISSN	15738663
Language	English
Publisher	Springer US
Publisher Date	2017-01-14
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Barium titanate Co-substitution Diffuse phase transition Ferroelectrics Domain pinning Optical and Electronic Materials Ceramics, Glass, Composites, Natural Materials Characterization and Evaluation of Materials Electrochemistry Crystallography and Scattering Methods
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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