Superconducting properties and microstructure of PLD-ErBa2Cu3O7-δ film with BaNb2O6

H. Kai, M. Mukaida, S. Horii, A. Ichinose, R. Kita, S. Kato, K. Matsumoto, Y. Yoshida, R. Teranishi, K. Yamada, N. Mori

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Abstract

We report superconducting properties and microstructures of a ErBa2Cu3O7-δ (ErBCO) film with 1.5 wt% BaNb2O6 (BNO) grown by pulse laser deposition (PLD) on a SrTiO3 (STO) substrate. The BNO was introduced into the ErBCO film as an artificial pinning center. Nano-rods originated in the BNO-doping and some particulate defects were clearly observed in transmission electron microscopy (TEM) images of the ErBCO film. The ErBCO film with BNO-doping (BNO + ErBCO) had almost the same critical temperature (TC) as that of a pure ErBCO film. On the other hand, the BNO + ErBCO film showed less critical current density (JC) than that of the pure ErBCO film. The angular peaks for H∥c-axis on JC-B-θ curves were not confirmed under all the measured external magnetic fields. X-ray diffraction analysis indicated the high orientation to the both c-axis and in-plane for the obtained film. However, the low surface flatness was confirmed by the TEM and atomic force microscopy (AFM) observation.

Original languageEnglish
Pages (from-to)895-899
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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    Kai, H., Mukaida, M., Horii, S., Ichinose, A., Kita, R., Kato, S., Matsumoto, K., Yoshida, Y., Teranishi, R., Yamada, K., & Mori, N. (2007). Superconducting properties and microstructure of PLD-ErBa2Cu3O7-δ film with BaNb2O6. Physica C: Superconductivity and its applications, 463-465(SUPPL.), 895-899. https://doi.org/10.1016/j.physc.2007.04.273