Optical and Electrical Properties of Ferroelectric SBN Thin Films Prepared by Sol-Gel Process |
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| Authors: | Junmo Koo Jae Hyeok Jang Byeong-Soo Bae |
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| Institution: | (1) Laboratory of Optical Materials and Coating (LOMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Taejon, 305-701, South Korea;(2) Laboratory of Optical Materials and Coating (LOMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Taejon, 305-701, South Korea |
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| Abstract: | Strontium barium niobate thin films were prepared by sol-gel method on various substrates using an improved process, two-step heating process. The two-step heating process applies an additive heat-treatment before crystallization for enhancement of the densification and the nucleation of films. Also, highly c-axis oriented SBN thin films with various compositions were obtained on MgO(100) and Pt(100)/MgO(100) substrates. Their optical and electrical properties such as optical propagation loss, refractive index, P-E hysteresis, and dielectric constant, were characterized as a function of the film composition. |
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| Keywords: | sol-gel strontium barium niobate thin film ferroelectric material optical waveguide |
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