Jc Characteristics in high magnetic field and microstructure of RE1+xBa2-xCu3O6+y films

Y. Yoshida, K. Matsumoto, M. Miura, Y. Ichino, Y. Takai, A. Ichinose, M. Mukaida, S. Horii

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We have investigated the superconducting properties and the microstructure of c-axis oriented Sm1+xBa2-xCu3O6+y (SmBCO) thin films deposited on MgO substrates by pulsed laser deposition (PLD). In particularly, the use of thin c-axis oriented seed layer grown at high temperature enabled us to obtain fully c-axis oriented SmBCO films at relatively low temperature (∼740 °C). The values of Tc for the present films are within the range of 91.5-92.5 K. From their J c-B characteristics, it has been observed that the superconducting properties of SmBCO (x = 0.04, 0.08) films are superior to those of the YBa 2Cu3O7-y thin films for B∥c, 5 T at 77 K. The Jc values of the SmBCO films measuring 2.8 × 105 A/m2 for 5 T of B∥c at 77 K are comparable to that of NbTi for 5 T at 4.2 K. Furthermore, the superconducting properties in SmBCO change with the substitution of Sm-Ba. The Electron microscopic studies with EDX and S-TEM analysis have revealed that the Sm/Ba ratio fluctuates within the range of x = 0-0.14 with a wavelength of ∼100 nm. High-Jc values in high magnetic fields at 77 K demonstrate the potential of REBCO films for high-field applications of oxide superconductor.

Original languageEnglish
Pages (from-to)1043-1050
Number of pages8
JournalPhysica C: Superconductivity and its applications
Issue numberII
Publication statusPublished - Oct 7 2005
Externally publishedYes
EventProceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity -
Duration: Nov 23 2004Nov 25 2004


All Science Journal Classification (ASJC) codes

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

Cite this

Yoshida, Y., Matsumoto, K., Miura, M., Ichino, Y., Takai, Y., Ichinose, A., ... Horii, S. (2005). Jc Characteristics in high magnetic field and microstructure of RE1+xBa2-xCu3O6+y films. Physica C: Superconductivity and its applications, 426-431(II), 1043-1050. https://doi.org/10.1016/j.physc.2005.01.059