Transport properties in Ca and Zn substituted NdBa2Cu 3O7-δ single crystals

M. Tamaki, T. Machi, I. Kato, N. Koshizuka, M. Murakami, S. Arai

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

We have measured the transport properties in Ca and Zn substituted NdBa2Cu3O7-δ (Nd123) single crystals grown by the travelling solvent floating zone (TSFZ) method. The normal state resistivity decreased with Ca doping and the electronic state changed into an over-doped state, which was revealed by the fact that the temperature dependence of resistivity turned into super-linear from the T-linear behavior. In contrast, a normal state resistivity increased with Zn doping presumably due to the fact that Zn acted as a scattering center. It was found that a combined addition of Ca and Zn was effective in increasing the irreversibility field and the critical current density simultaneously through the optimization of carrier concentration and pinning performance.

Original languageEnglish
Pages (from-to)157-160
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • Ca substitution
  • NdBaCuO single crystals
  • Transport properties
  • Zn substitution

ASJC Scopus subject areas

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

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