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Cation exchange: A scheme for synthesis of mercury-based high-temperature superconducting epitaxial thin films (1999)

Wu, J. Z. ; Yan, S. L. ; Xie, Y. Y.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 74 (1999), S. 1469-1471

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: A cation-exchange process has been developed for growth of high-quality epitaxial thin films of highly volatile mercury-based high-temperature superconductors. By selecting epitaxial precursor matrices of TlyBa2CaCu2Ox (y=1,2) and annealing them in Hg vapor, c-axis-oriented epitaxial HgBa2CaCu2O6+δ thin films with superior quality were formed through Tl and Hg-cation exchange. At 110 K, these films can carry supercurrent density close to 1 MA/cm2 which is nearly an order of magnitude higher than the best reported previously. This cation-exchange technique also provides a general scheme for synthesis of other volatile compounds with predesigned structure and composition. © 1999 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.123583

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