Direct observation of flux-creep in high-Tc superconductors using the high-resolution Faraday effect

Michael Rudolf Koblischka, Th Schuster, B. Ludescher, H. Kronmüller

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Using the capability of the high-resolution Faraday effect (HRF) to allow dynamic observations of the Shubnikov phase, we directly observed effects of flux-creep in high -Tc superconductors. In this paper we show measurements on (RE) Ba2Cu3O7-δ with RE=Y, Dy, Gd and on Bi2Sr2CaCu2O8-δ single crystals and also on YBaCuO thin films and sintered materials. Furthermore, this technique enables us also to measure the flux creep locally. From the obtained photographs we determine the time dependence of the total flux in the samples. Using these data and the model of Hagen et al. the effective activation energies have been determined for these materials.

Original languageEnglish
Pages (from-to)557-562
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume190
Issue number4
DOIs
Publication statusPublished - 1992 Jan 15
Externally publishedYes

Fingerprint

Faraday effect
Superconducting materials
Creep
Fluxes
high resolution
photographs
time dependence
Activation energy
Single crystals
activation energy
Thin films
single crystals
thin films

ASJC Scopus subject areas

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

Cite this

Direct observation of flux-creep in high-Tc superconductors using the high-resolution Faraday effect. / Koblischka, Michael Rudolf; Schuster, Th; Ludescher, B.; Kronmüller, H.

In: Physica C: Superconductivity and its Applications, Vol. 190, No. 4, 15.01.1992, p. 557-562.

Research output: Contribution to journalArticle

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