Superconducting Nd1.85Ce0.15CuO4-y Thin Films and Heterostructures on Sapphire

S. N. Mao, Jian Mao, X. X. Xi, D. H. Wu, Qi Li, S. M. Anlage, T. Venkatesan, X. D. Wu

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2 Scopus citations


Superconducting Nd1.85Ce0.15CuO4-y (NCCO) thin films have been made on Yttria-Stabilized Zirconia(YSZ) buffered sapphire. The films are epitaxially grown and highly in-plane oriented. X-ray diffraction shows the c-axis of the film normal to the surface of the substrate. The width of rocking curve is 0.2° and the RBS channeling yield is 9%, indicating high crystallinity of the film. Cross-sectional transmission electron microscopy images reveal a sharp interface between NCCO and YSZ. The microwave surface resistance of NCCO films on YSZ buffered sapphire at 9.6 GHz was measured and a value of 80 µΩ (at 4.2 K in zero dc magnetic field) was obtained, which is comparable to Y1Ba2Cu3O7_y (YBCO) films at the same reduced temperature. A trilayer structure of YBCO/SrTiO3/ NCCO on YSZ buffered sapphire has been fabricated with all layers oriented, in which both the YBCO and NCCO layers are superconducting.

Original languageEnglish (US)
Pages (from-to)1347-1350
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
StatePublished - Jun 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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