T, Durga Rao and Tangavelua, K and Asthana, Saket
(2015)
The impedance and conductivity studies on BiFeO3 and 0.90BiFeO3-0.10Bi0.5Na0.5TiO3 ceramics.
In: SOLID STATE PHYSICS: Proceedings of the 59th DAE Solid State Physics Symposium 2014, 16–20 December 2014, Tamilnadu, India.
Abstract
Polycrystalline BiFeO
3
and 0.90BiFeO
3
-0.10Bi
0.5
Na
0.5
TiO
3
compounds were synthesized by conventional
solid state route. The compounds were crystallized in rhombohedral structure with
R3c
space group. Complex
impedance studies revealed that insulating character of both grain and grain boundaries were improved in 0.90BiFeO
3
-
0.10Bi
0.5
Na
0.5
TiO
3
compound. Both complex and modulus plots confirmed the presence of non- Debye type relaxations
in these compounds. Frequency dependence of AC conductivity at different temperatures suggests that charge carriers
follow correlated barrier hopping (CBH) model. Estimated activation energies indicated that oxygen vacancies
movements are the prime contributors to the conduction in the measured temperature range
[error in script]
| IITH Creators: |
| IITH Creators | ORCiD |
|---|
| Asthana, Saket | http://orcid.org/0000-0002-6420-3304 |
|
| Item Type: |
Conference or Workshop Item
(Paper)
|
| Uncontrolled Keywords: |
Multiferroics, Electrical impedance, ac conductivity, Correlated barrier hopping.
PACS:
72.20.-i. |
| Subjects: |
Physics |
| Divisions: |
Department of Physics |
| Depositing User: |
Team Library
|
| Date Deposited: |
29 Jun 2015 09:26 |
| Last Modified: |
29 Aug 2017 10:05 |
| URI: |
http://raiithold.iith.ac.in/id/eprint/1612 |
| Publisher URL: |
https://doi.org/10.1063/1.4918093 |
| Related URLs: |
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