Indian Science Technology and Engineering facilities Map
Supplier Map
Service Map

Publications

Publication Details

Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
L. K. Pradhan, R. Pandey, S. Kumar and M. Kar 
Corresponding Authors:
Manoranjan Kar 
DOI #:
https://doi.org/10.1088/2053-1591/ab30e9 
Title:
Role of tricritical triple point type morphotropic phase boundary (multiple crystalline phases) on energy storage density in Bi0.5Na0.5TiO3 based solid solution 
Journal:
Mater. Res. Express  
Year:
2019 
Volume:
Page:
095521 
Keywords:
tricritical triple point, morphotropic phase 
Abstract:
Compositional engineering with different crystal symmetries has been considered as an imperative approach to enhance the ferroelectric as well as piezoelectric properties. An evidence of tricritical triple point type morphotropic phase boundary (TMPB) in Bi0.5Na0.5TiO3 based ternary solid solution (i.e. ((Bi0.5Na0.5)0.94Ba0.06)0.70Sr0.30TiO3/ BNBSTO) has been observed. It is confirmed by correlating the structural distortion with the physical properties. The multiple crystal symmetries (Cc, P4mm and Pm bar{3} 3 ̄ m) of the solid solution were identified by the Rietveld refinement of the x-ray diffraction pattern. The result is well supported by the Raman spectra analysis. The presence of non-polar phase (cubic) with the polar phases (monoclinic and tetragonal) in solid solution leads to reduce the energy barrier. Also, it enhances the polarization switching through polarization extension mechanism. The energy storage density of the BNBSTO solid solution is found to be maximum (∼0.38 J cm−3) at 61 kV cm−1. The dynamics of the electric field induced polarization (P-E hysteresis loop) and current density (J-E variation) curves reveal the presence of the polarization reversal with the domain switching process. Also, the compositional fluctuation at A-site of the BNBSTO solid solution leads to enhance the relaxor behavior, which reflects in the ferroelectric properties and relative dielectric permittivity. 
Entered by:
Venkata Dantham on 2020-08-02 
 
I-Mitra(आई-मित्र) Welcomes You..
THE VISION
THE MISSION
ABOUT I-STEM
It has always been the basic tenet of the Government of India, in generously funding R&D efforts at academic institutions over the years, that facilities established through such support be made available to those needing them and qualified to make use of them for their own research work
read more >>

However, this was never easy or straightforward for, among other reasons, there was no ready source of information of what facility was available and where. Thanks to the Web, it is much easier today to have a national and regional “inventory of resources”, so as to match users with the resources they need, and to do all this in an efficient and transparent manner.

This can lead to a leap in R&D productivity and greatly enhance the effectiveness of public investment. This is the motivation behind I-STEM.
read less <<
Visitor Hit Counter
Hosted at Indian Institute of Science
Copyright © 2020 I-STEM. All rights reserved.
Audited by: STQC Bengaluru.