6 September 2000 Surface and interface feature of high-Tc superconductor, ferroelectric, and CMR material films and their heterostructures
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Abstract
The high-Tc superconductor YBa2Cu3O7/ferroelectric Pb(Zr,Ti)O3 (YBCO/PZT) heterostructures, La1-xCaxMnO3 thin film and La1-yCayMnO3/La1- xCaxMnO3 (x does not equal y) heterostructures have been prepared and investigated. For YBCO/PZT heterostructures, it was found by conducting atomic force microscope (C-AFM) that the leakage current distributes in the local defect region with plane size of 10 nm order. This is a new discovery of the investigation of leakage current mechanism from the surface morphology of PZT/YBCO heterostructures. One kind of ordered surface structure was observed for the first time in the films of (La1-xCax)MnO3 with x >= 0.5, which has shown an important role for the formation of interfacial structure and CMR effect of the La1- yCayMnO3/La1- xCaxMnO3 (x >= 0.5, x does not equal y) heterostructures.
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Bai Ru Zhao, Bai Ru Zhao, H. B. Peng, H. B. Peng, Y. Lin, Y. Lin, Z. Xie, Z. Xie, E. Z. Luo, E. Z. Luo, B. Xu, B. Xu, I. H. Wilson, I. H. Wilson, Y. M. Ni, Y. M. Ni, H. J. Tao, H. J. Tao, L. H. Zhao, L. H. Zhao, } "Surface and interface feature of high-Tc superconductor, ferroelectric, and CMR material films and their heterostructures", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397839; https://doi.org/10.1117/12.397839
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