Sharma, Savita and Tomar, Monika and Kumar, Ashok and Puri, Nitin K. and Gupta, Vinay (2015) Stress induced enhanced polarization in multilayer BiFeO3/BaTiO3 structure with improved energy storage properties. AIP Advances, 5 (10). ISSN 2158-3226
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Abstract
Present work reports the fabrication of a multilayer (5-layer) structure of BiFeO3(BFO)/BaTiO3(BTO) using spin-coating technique. The crystallographic structure, surface morphology and ferroelectric behavior of multilayer structure in metal-ferroelectric-metal capacitor have been studied. Le-Bail refinement of X-ray diffraction data revealed the formation of polycrystalline pure perovskite phase with induced stress. The values of remnant (Pr) and saturation polarization (Ps) for BFO/BTO multilayer structure are found to be 38.14 degrees C/cm(2) and 71.54 degrees C/cm(2) respectively, which are much higher than the corresponding values reported for bare BFO thin film. A large value of dielectric constant of 187 has been obtained for multilayer structure with a low leakage current density of 1.09 x 10(-7) A/cm(2) at applied bias of 10 V. The BFO/BTO multilayer structure favors the enhanced energy storage capacity as compared to bare BFO thin film with improved values of energy-density and charge-discharge efficiency as 121 mJ/cm(3) and 59% respectively, suggesting futuristic energy storage applications. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
| Item Type: | Article |
|---|---|
| Subjects: | Materials Science Applied Physics/Condensed Matter Nanoscience/ Nanotechnology |
| Divisions: | UNSPECIFIED |
| Depositing User: | Dr. Rajpal Walke |
| Date Deposited: | 13 Oct 2016 07:37 |
| Last Modified: | 13 Oct 2016 07:37 |
| URI: | http://npl.csircentral.net/id/eprint/1992 |
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