Correlated pinning behavior in ErBa2Cu3Oy films with BaZrO3 nano-rods

M. Namba, S. Awaji, K. Watanabe, S. Ito, E. Aoyagi, H. Kai, Masashi Mukaida, R. Kita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In REBa2Cu3Oy (RE123) films with BaZrO3 (BZO), the columnar shaped BZO precipitates, called nano-rods, are formed as the c-axis-correlated pinning centers. In order to understand the vortex pinning properties of RE123 films with BZO nano-rods, we measured the resistivity ρ and critical current density Jc of three different films, i.e. the Er123 films with 0, 1.5 and 3.5 wt% BZO prepared by pulsed laser deposition. We found that the peak related to the c-axis-correlated pinning in the angular dependence of Jc became large in a low field region but small in a high magnetic field with increasing BZO concentration. In addition, the irreversibility field at B||c-axis increased also with increasing BZO concentration, although the dip in the angular dependence of ρ and the peak of the Jc at B||c-axis decreased in the high magnetic field near the irreversible field. It is suggested that the BZO addition is effective to the enhancement of Jc in a low field region as well as the improvement of the irreversibility field. However, we have to consider the c-axis-correlated pinning by the edge dislocations as well as the nano-rods in order to understand it in a high field region.

Original languageEnglish
Pages (from-to)1404-1409
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume469
Issue number15-20
DOIs
Publication statusPublished - Oct 15 2009

Fingerprint

rods
Magnetic fields
Edge dislocations
Pulsed laser deposition
edge dislocations
Precipitates
Vortex flow
magnetic fields
pulsed laser deposition
precipitates
critical current
vortices
current density
electrical resistivity
augmentation

All Science Journal Classification (ASJC) codes

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

Cite this

Namba, M., Awaji, S., Watanabe, K., Ito, S., Aoyagi, E., Kai, H., ... Kita, R. (2009). Correlated pinning behavior in ErBa2Cu3Oy films with BaZrO3 nano-rods. Physica C: Superconductivity and its Applications, 469(15-20), 1404-1409. https://doi.org/10.1016/j.physc.2009.05.046

Correlated pinning behavior in ErBa2Cu3Oy films with BaZrO3 nano-rods. / Namba, M.; Awaji, S.; Watanabe, K.; Ito, S.; Aoyagi, E.; Kai, H.; Mukaida, Masashi; Kita, R.

In: Physica C: Superconductivity and its Applications, Vol. 469, No. 15-20, 15.10.2009, p. 1404-1409.

Research output: Contribution to journalArticle

Namba, M, Awaji, S, Watanabe, K, Ito, S, Aoyagi, E, Kai, H, Mukaida, M & Kita, R 2009, 'Correlated pinning behavior in ErBa2Cu3Oy films with BaZrO3 nano-rods', Physica C: Superconductivity and its Applications, vol. 469, no. 15-20, pp. 1404-1409. https://doi.org/10.1016/j.physc.2009.05.046
Namba, M. ; Awaji, S. ; Watanabe, K. ; Ito, S. ; Aoyagi, E. ; Kai, H. ; Mukaida, Masashi ; Kita, R. / Correlated pinning behavior in ErBa2Cu3Oy films with BaZrO3 nano-rods. In: Physica C: Superconductivity and its Applications. 2009 ; Vol. 469, No. 15-20. pp. 1404-1409.
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