Surface and interface feature of high-Tc superconductor, ferroelectric, and CMR material films and their heterostructures

Bai Ru Zhao; H. B. Peng; Y. Lin; Z. Xie; E. Z. Luo; B. Xu; I. H. Wilson; Y. M. Ni; H. J. Tao; L. H. Zhao

doi:10.1117/12.397839

6 September 2000 Surface and interface feature of high-T_c superconductor, ferroelectric, and CMR material films and their heterostructures

Bai Ru Zhao, H. B. Peng, Y. Lin, Z. Xie, E. Z. Luo, B. Xu, I. H. Wilson, Y. M. Ni, H. J. Tao, L. H. Zhao

Author Affiliations +

Proceedings Volume 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV; (2000) https://doi.org/10.1117/12.397839
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

The high-T_c superconductor YBa₂Cu₃O₇/ferroelectric Pb(Zr,Ti)O₃ (YBCO/PZT) heterostructures, La_1-xCa_xMnO₃ thin film and La_1-yCa_yMnO₃/La_{1- x}Ca_xMnO₃ (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 (La_1-xCa_x)MnO₃ with x >= 0.5, which has shown an important role for the formation of interfacial structure and CMR effect of the La_{1- y}Ca_yMnO₃/La_{1- x}Ca_xMnO₃ (x >= 0.5, x does not equal y) heterostructures.

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Bai Ru Zhao, H. B. Peng, Y. Lin, Z. Xie, E. Z. Luo, B. Xu, I. H. Wilson, Y. M. Ni, H. J. Tao, and L. H. Zhao "Surface and interface feature of high-T_c superconductor, ferroelectric, and CMR material films and their heterostructures", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); https://doi.org/10.1117/12.397839

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