Effects of BaZrO 3 dispersion into EuBa 2 Cu 3 O 7-δ superconducting thin films

M. Miura, Masashi Mukaida, K. Matsumoto, Y. Yoshida, A. Ichinose, S. Horii, R. Kita, A. Saito, Kenji Kaneko, K. Yamada, N. Mori

Research output: Contribution to journalArticle

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Abstract

Surface resistances (R S ) have been measured for EuBa 2 Cu 3 O 7-δ (EuBCO) films grown in an ozone atmosphere. We grew BaZrO 3 dispersed EuBCO films with artificial pinning centers (APCs) in an ozone atmosphere. We have investigated the effects of BaZrO 3 dispersion into EuBCO films. The EuBCO films were grown using a pulsed laser deposition (PLD) in an ozone atmosphere on (1 0 0) SrTiO 3 substrates. We use a pure EuBCO target and an EuBCO + 1.0 wt% BaZrO 3 target. By BaZrO 3 dispersion into EuBCO films, the crystallinity of BaZrO 3 dispersed EuBCO films was poorer than that of pure EuBCO films. BaZrO 3 dispersion into EuBCO films did not improve their superconducting characteristics. Then we evaluated microstructure by using transmission electron microscopy (TEM). We observed nano-rods in BaZrO 3 dispersed EuBCO films. However, we did not observe nano-rods in BaZrO 3 dispersed EuBCO films grown in an oxygen atmosphere. The differences between an ozone and an oxygen atmosphere influence on nano-rod forming. We found that the nano-rod size is important and is strongly related to not only RE (RE: Rare Earth) ion radii but also growth conditions of films.

Original languageEnglish
Pages (from-to)845-848
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume445-448
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2006

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Superconducting films
thin films
Ozone
ozone
atmospheres
rods
Oxygen
Surface resistance
oxygen
Pulsed laser deposition
Rare earths
pulsed laser deposition
crystallinity
rare earth elements
Ions
Transmission electron microscopy

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

Effects of BaZrO 3 dispersion into EuBa 2 Cu 3 O 7-δ superconducting thin films . / Miura, M.; Mukaida, Masashi; Matsumoto, K.; Yoshida, Y.; Ichinose, A.; Horii, S.; Kita, R.; Saito, A.; Kaneko, Kenji; Yamada, K.; Mori, N.

In: Physica C: Superconductivity and its applications, Vol. 445-448, No. 1-2, 01.10.2006, p. 845-848.

Research output: Contribution to journalArticle

Miura, M, Mukaida, M, Matsumoto, K, Yoshida, Y, Ichinose, A, Horii, S, Kita, R, Saito, A, Kaneko, K, Yamada, K & Mori, N 2006, ' Effects of BaZrO 3 dispersion into EuBa 2 Cu 3 O 7-δ superconducting thin films ', Physica C: Superconductivity and its applications, vol. 445-448, no. 1-2, pp. 845-848. https://doi.org/10.1016/j.physc.2006.06.016
Miura, M. ; Mukaida, Masashi ; Matsumoto, K. ; Yoshida, Y. ; Ichinose, A. ; Horii, S. ; Kita, R. ; Saito, A. ; Kaneko, Kenji ; Yamada, K. ; Mori, N. / Effects of BaZrO 3 dispersion into EuBa 2 Cu 3 O 7-δ superconducting thin films In: Physica C: Superconductivity and its applications. 2006 ; Vol. 445-448, No. 1-2. pp. 845-848.
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