Sintering dependent Ca2+ solubility in barium titanate synthesized by sol-gel auto combustion method
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Sintering dependent Ca2+ solubility in barium titanate synthesized by sol-gel auto combustion method
|
|
| Creator |
Dash, Smaranika
Mohanty, Hari Sankar Bhoi, Krishnamayee Kant, Ravi Kumar, Ashok Thomas, Reji Pradhan, Dillip K. |
|
| Subject |
Electronics and Electrical Engineering
Materials Science Applied Physics/Condensed Matter |
|
| Description |
We report the preparation of ferroelectric Ba0.7Ca0.3TiO3 (BCT) ceramics by sol-gel auto combustion technique and its specific functional properties. The structural, dielectric and ferroelectric properties of BCT are strongly depending on the sintering temperature which also improves the phase purity and crystalline quality of the system. The formation of single-phase BCT is realized by sintering at 1450 degrees C for 4h. suggesting the solubility limit of Ca2+ cation. Grain size and relative density are increased as the sintering temperature increased. The Rietveld refinement technique is employed for the detailed crystal structural analysis. The temperature and frequency dependent dielectric properties are investigated; the measured dielectric constant is epsilon(r)=2680at the transition temperature T-c=120 degrees C for the single phase ferroelectric BCT. Sintering and electrical poling improved the shape of the hysteresis curve and reduced the leakage current. Electrical conduction mechanism is also discussed.
|
|
| Publisher |
Springer Verlag
|
|
| Date |
2018-12-29
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/4000/1/Sintering%20dependent%20Ca.pdf
Dash, Smaranika and Mohanty, Hari Sankar and Bhoi, Krishnamayee and Kant, Ravi and Kumar, Ashok and Thomas, Reji and Pradhan, Dillip K. (2018) Sintering dependent Ca2+ solubility in barium titanate synthesized by sol-gel auto combustion method. Journal of Materials Science: Materials in Electronics, 29 (24). pp. 20820-20831. ISSN 0957-4522 |
|
| Relation |
http://npl.csircentral.net/4000/
|
|