Influence of coating solution composition on REBa2Cu 3Oy(RE=Gd and Sm,Eu,Gd) films fabricated by fluorine-free metalorganic deposition

T. Nakamura, R. Kita, S. Kawabata, O. Miura, A. Ichinose, K. Matsumoto, Y. Yoshida, M. Mukaida, S. Horii

Research output: Contribution to journalArticle

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Abstract

GdBa2Cu3Oy (GdBCO) and Sm 0.33Eu0.33Gd0.33Ba2Cu 3Oy (SEG) films were prepared by metalorganic deposition (MOD) using two fluorine-free solutions: A metal 2-ethylhexanate (2-EH) and a complex solution (CS) consisting of metal 2-EH and metal-naphthenate. We investigated the effects of these new fluorine-free solutions, and their potential use in the fabrication of several REBCO (RE: rare earth) materials. The crystal growth, surface morphology, and superconducting properties of films prepared on single-crystal LaAlO3 substrates at low oxygen partial pressure strongly depended upon the coating solution used. Films prepared using 2-EH exhibited improved thermal stability of the superconducting phase during heat treatment. On the other hand, films prepared by CS had a flat superconducting matrix, with a roughness of several tens of nm and large precipitates 23 μm in diameter. In addition, the CS films had a higher critical temperature (91.2 K) than the 2-EH film. The zero-field critical current density at 77.3 K was 0.19 MA/cm2 for 2-EH films, and 0.61 MA/cm2 for CS films.

Original languageEnglish
Pages (from-to)1165-1172
Number of pages8
JournalModern Physics Letters B
Volume24
Issue number12
DOIs
Publication statusPublished - May 20 2010

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fluorine
coating
metals
partial pressure
crystal growth
precipitates
critical current
critical temperature
heat treatment
thermal stability
roughness
rare earth elements
current density
fabrication
single crystals
oxygen
matrices

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Cite this

Influence of coating solution composition on REBa2Cu 3Oy(RE=Gd and Sm,Eu,Gd) films fabricated by fluorine-free metalorganic deposition. / Nakamura, T.; Kita, R.; Kawabata, S.; Miura, O.; Ichinose, A.; Matsumoto, K.; Yoshida, Y.; Mukaida, M.; Horii, S.

In: Modern Physics Letters B, Vol. 24, No. 12, 20.05.2010, p. 1165-1172.

Research output: Contribution to journalArticle

Nakamura, T. ; Kita, R. ; Kawabata, S. ; Miura, O. ; Ichinose, A. ; Matsumoto, K. ; Yoshida, Y. ; Mukaida, M. ; Horii, S. / Influence of coating solution composition on REBa2Cu 3Oy(RE=Gd and Sm,Eu,Gd) films fabricated by fluorine-free metalorganic deposition. In: Modern Physics Letters B. 2010 ; Vol. 24, No. 12. pp. 1165-1172.
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AU - Kita, R.

AU - Kawabata, S.

AU - Miura, O.

AU - Ichinose, A.

AU - Matsumoto, K.

AU - Yoshida, Y.

AU - Mukaida, M.

AU - Horii, S.

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