NDLI: Synthesis and analysis of lead-free tungsten bronze ferroelectrics

Content Provider	Springer Nature Link
Author	Mohanty, B. B. Sahoo, P. S. Choudhary, R. N. P.
Copyright Year	2012
Abstract	The polycrystalline Ba$_{2}$Sr$_{3}$GdTi$_{3}$V$_{7}$O$_{30}$, a member of tungsten bronze structural family, was prepared by a solid-state reaction method at high temperature (calcination and sintering temperatures at 950 and 1,000 °C, respectively). Preliminary structural study showed that the compound has orthorhombic crystal structure at room temperature. Study of surface morphology of the compound by scanning electron microscopy exhibits the uniform grain distribution on the surface of the sample with less number of voids. The dielectric anomaly observed at 313 °C is considered as a ferroelectric-paraelectric phase transition temperature which has been confirmed by appearance of hysteresis loop at room temperature. The trend of variation of ac conductivity with inverse of absolute temperature provides the nature of conduction mechanism in the material. The different value of activation energy in different temperature regions suggests that the conduction process in the material is of mixed-type (i.e., ionic–polaronic and space charge due to the oxygen ion vacancies).
Starting Page	1707
Ending Page	1713
Page Count	7
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	24
Issue Number	5
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2012-11-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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