Ferroelectric SrxBa1-xNb2O6 optical waveguiding thin films on SiO2-coated Si(100) substrates |
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Authors: | SB Xiong ZM Ye XY Chen XL Guo SN Zhu ZG Liu CY Lin YS Jin |
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Institution: | (1) National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China, CN;(2) Center for Materials Analysis, Nanjing University, Nanjing 210093, China, CN |
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Abstract: | x Ba1-xNb2O6 (x=0.5) films (abbreviated as SBN:0.5) on SiO2-coated Si substrates are potential components for the application of integrated electro-optics devices. SBN:0.5 optical waveguiding
thin films on SiO2-coated Si substrates with a very thin MgO diffusion buffer have been successfully prepared by pulsed laser deposition. The
as-grown films have a refractive index of 2.28, which is close to that of bulk SBN. X-ray analysis showed that the as-grown
films have a single-phase tetragonal tungsten bronze structure. The SBN:0.5 thin films prepared by PLD exhibit favorable ferroelectric
and optical waveguiding properties. The composition and the morphology of the films were also examined by XPS and by SEM,
respectively. Ferroelectric SBN:0.5 optical waveguiding thin films on SiO2-coated Si substrates are expected to be used in integrated electro-optic devices.
Received: 27 February 1997/Accepted: 17 October 1997 |
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Keywords: | PACS: 81 15 Fg 78 66 -w 77 84 Dy |
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