Fabrication of thick YBa2Cu3O7-x films on optimized SrTiO3 buffered-MgO single crystals

Paolo Mele, K. Matsumoto, T. Horide, A. Ichinose, M. Mukaida, Y. Yoshida, S. Horii

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this work, we studied the optimum deposition conditions for SrTiO 3 (STO) buffers deposited on MgO single crystals substrates by PLD method. We found that 120 nm thick STO films, deposited at 730 °C, present the smoothest surface and a minimum FWMH of the (002) reflection. High quality, smooth and free-crack YBa2Cu3O7-x (YBCO) thick superconducting films have then been fabricated using a deposition temperature of 800 °C on STO-buffered MgO substrates. A 373 nm thick YBCO/STO/MgO film can carry current densities Jc (77 K, 0 T) of 1.4 MA/cm2 and Jc (77 K, 5 T) of 0.14 MA/cm2. The Jc in high field overcomes the current transported in same experimental conditions by 180 nm thick YBCO film grown on Y2O3-decorated STO single crystal. For 1350 nm thick YBCO/STO/MgO film the Jc (77 K, 0 T) is about 0.8 MA/cm2 and Jc (77 K, 5 T) is 0.09 MA/cm 2.

Original languageEnglish
Pages (from-to)3713-3716
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume17
Issue number2
DOIs
Publication statusPublished - 2007 Jun 1
Externally publishedYes

Fingerprint

Single crystals
Fabrication
fabrication
single crystals
Superconducting films
superconducting films
Substrates
Pulsed laser deposition
Thick films
Buffers
Current density
cracks
buffers
current density
Cracks
strontium titanium oxide
barium copper yttrium oxide
Temperature
temperature
1-dodecylpyridoxal

Keywords

  • Artificial pinning centers
  • Buffer layers
  • Critical current density
  • Thick films
  • YBaCuO

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Fabrication of thick YBa2Cu3O7-x films on optimized SrTiO3 buffered-MgO single crystals. / Mele, Paolo; Matsumoto, K.; Horide, T.; Ichinose, A.; Mukaida, M.; Yoshida, Y.; Horii, S.

In: IEEE Transactions on Applied Superconductivity, Vol. 17, No. 2, 01.06.2007, p. 3713-3716.

Research output: Contribution to journalArticle

Mele, Paolo ; Matsumoto, K. ; Horide, T. ; Ichinose, A. ; Mukaida, M. ; Yoshida, Y. ; Horii, S. / Fabrication of thick YBa2Cu3O7-x films on optimized SrTiO3 buffered-MgO single crystals. In: IEEE Transactions on Applied Superconductivity. 2007 ; Vol. 17, No. 2. pp. 3713-3716.
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