Dependence of dc and ac conduction on the pre-sintering temperature in sol-gel derived Ba0.5Sr0.5TiO3 thin films
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Dependence of dc and ac conduction on the pre-sintering temperature in sol-gel derived Ba0.5Sr0.5TiO3 thin films
|
|
| Creator |
Roy, Somnath C.
Sharma, G. L. Bhatnagar, M. C. Manchanda, R. Balakrishnan, V. R. Samanta, S. B. |
|
| Subject |
Multidisciplinary
Materials Science |
|
| Description |
The effect of pre-sintering temperature on the activation energies of dc and ac conduction in sol-gel spin-coated Ba0.5Sr0.5TiO3 (BST) thin films is reported in this paper. Layer by layer coating of BST sol on Pt/TiN/SiO2/Si substrates was done with varying pre-sintering temperatures (drying temperature for individual layers). Dominant mechanism of dc conduction was identified as Schottky process whereas ac conduction was governed by trap controlled hopping process. The activation energy for dc conduction decreased from 0.45 to 0.38 eV with increase in the pre-sintering temperature from 400 to 600 degrees C; whereas, that for ac conduction increased from 0.17 to 0.21 eV. The results have been correlated with grain growth phenomena and reduction of oxygen vacancies in the films with increase in the pre-sintering temperature.
|
|
| Publisher |
Elsevier
|
|
| Date |
2006-12
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/2444/1/31.pdf
Roy, Somnath C. and Sharma, G. L. and Bhatnagar, M. C. and Manchanda, R. and Balakrishnan, V. R. and Samanta, S. B. (2006) Dependence of dc and ac conduction on the pre-sintering temperature in sol-gel derived Ba0.5Sr0.5TiO3 thin films. Materials Chemistry and Physics, 100 (3). pp. 404-410. ISSN 0254-0584 |
|
| Relation |
http://npl.csircentral.net/2444/
|
|