Epitaxially Grown LaSrCoO3 Thin Films on Various Substrates by the Sol-Gel Method |
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Authors: | Kyu-Seog Hwang Hyung-Min Lee Seon-Suk Min Bo-An Kang |
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Institution: | (1) School of General Education, Nambu University, Kwangju High-tech Industrial Complex, 864-1, Wolgye Dong, Kwangsan Gu, Kwangju, 506-302, Korea;(2) Department of Ceramic Engineering, Chonnam National University, 300 Yongbong Dong, Buk Gu, Kwangju, 500-757, Korea |
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Abstract: | LaSrCoO3 thin films have been prepared on various substrates by the sol-gel method using inorganic salts as starting materials. The crystallinity and in-plane alignment of the films were analyzed by X-ray diffraction -2 scans and scans (pole-figure analysis), respectively. Highly (h00)/(00l)-oriented LaSrCoO3 films with crack-free surfaces were obtained by annealing at 800°C on SrTiO3(100), while films grown on MgO(100) and Si(100) exhibited poor crystallinity. According to the X-ray diffraction -2 scan, crystallinity of the product films was found to depend on lattice-misfit values between the films and the substrates used. On the contrary, the lattice-misfit values were less effective to the epitaxy of the LSCO film. Epitaxial film grown on SrTiO3 annealed at 800°C was found by reciprocal-space mapping ( -2 scan) analysis to consist of the pseudocubic phase. |
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Keywords: | LaSrCoO3 films inorganic salts lattice-misfit values reciprocal space mapping ( -2 gif" alt="ohgr" align="BASELINE" BORDER="0">-2 scan) analysis" target="_blank">gif" alt="theta" align="BASELINE" BORDER="0"> scan) analysis |
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