Temperature dependence of the peak effect in NdBa2Cu 3O 7-δ single crystals and melt-processed (Sm 0.5Eu0.5)Ba2Cu3O 7-δ single domains

A. Hu, N. Chikumoto, K. Inoue, M. Murakami

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Magnetization loops of NdBa2Cu3O7-δ (Nd123) single crystals grown under low oxygen partial pressure and melt-processed (Sm0.5Eu0.5)Ba2Cu 3O7-δ (SE123) crystals with post-annealing in Ar were comparatively studied in a wide temperature and field regime. The peak field at which magnetic moment displays the maximum, exhibits a linear temperature dependence in both cases. The fitting shows a slightly lower critical temperature than bulk Tc at null applied field. The temperature dependence of the onset field from which the absolute value of magnetic moment starts to increase, indicates the dominant pinning at low fields in Nd123 single crystals is the surface barrier while the RE211/123 interfacial pinning in melt-processed SE123 crystals.

Original languageEnglish
Pages (from-to)345-348
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • Compositional fluctuation
  • Interfacial pinning
  • Peak effect
  • Surface barrier

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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