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Detailed Program
| Paper Number : PI-O07 |
| Time Frame : 15:40~15:52 |
| Presentation Date : Thurseday, 27, November |
| Session Name : Piezoelectric Materials, Devices & Applications |
| Session Chair 1# : In-Tae Seo |
| Session Chair 2# : Tomoaki Mashimo |
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| ENHANCEMENT OF MULTIFERROIC PROPERTIES IN NANO-HETEROSTRUCTURED MULTILAYER BISMUTH FERRITE THIN FILMS |
| V. Annapu Reddy |
| Korea Institute of Materials Science (KIMS) |
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Multilayered nano-heterostructured Bi0.9La0.1Fe0.9Mn0.1O3-BiFeO3 (BLFM-BFO) thin films were grown on Zn0.91Cr0.09O buffered Si (100) substrate by chemical solution deposition. Structural analysis indicates that the crystal structure of BLFM film is orthorhombic in contrast to BFO, which is rhombohedral. Reduced leakage current, and increased ferroelectric saturation of multilayer thin films were obtained and compared with those of BFO and BLFM thin films. Improved ferroelectric properties, as well as induced ferromagnetism, were observed for multilayer thin films. The resultant improvements have been attributed to the interface coupling interaction between the thin layers. To better understand the effect of interface coupling on the order of heterojunctions, the order of BFO and BLFM layers in the multilayer thin film has been altered. These nano-hetrostructured thin films have been deposited under the same fabrication conditions and investigated. A significant improvement in the interface coupling and interface constrained effect between the thin multiferroic layers has been observed. These films also exhibit enhancement in ferroelectric fatigue up to 108 switching cycles.
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| Acknowledgements : |
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