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Investigation on the structural, electrical and thermistor parameters of La-doped BiFeO$_3$–PbZrO$_3$ for energy storage devices
PRIYAMBADA MALLICK SANTOSH KUMAR SATPATHY BANARJI BEHERA
Volume 45 Published: 13 October 2022 Article ID 0198
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https://www.ias.ac.in/article/fulltext/boms/045/0198 -
Keywords
Solid-state reaction ;XRD ;AC conductivity ;thermistor ;density of states. -
Abstract
The solid-state reaction technique was used to prepare the sample 0.5(BiLa$_y$Fe$_{1–y}$O$_3$)–0.5(PbZrO$_3$) at different concentrations y = 0.05, 0.10, 0.15, 0.20. Structural parameters such as percent crystallinity, average crystallitesize, dislocation density and microstrain were calculated from the X-ray diffraction data at room temperature. The scanning electron microscope micrographs reveal the spherical, densely packed natures of the samples with low porosity.The energy density with efficiency of the prepared samples was calculated from P–E loop. The performance of the composites as an NTC thermistor at high temperatures (275–400°C) was discussed. Thermistor constant, sensitivity index and activation energies were calculated to understand the characteristics of the NTC thermistor. The high value of density of states was determined from the frequency and temperature-dependent ac conductivity of the composites.
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Author Affiliations
PRIYAMBADA MALLICK1 SANTOSH KUMAR SATPATHY1 BANARJI BEHERA2
- Department of Applied Physics, Centurion University of Technology and Management, Bhubaneswar 752050, India
- School of Physics, Sambalpur University, Sambalpur 768019, India
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Dates
- Published
- 13 October 2022
- Manuscript received
- 17 March 2022
- Accepted
- 4 June 2022
- Final version published online
- 13 October 2022
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