Magneto-optical imaging of Shubnikov phase

Th Schuster, Michael Rudolf Koblischka, H. Kronmüller

Research output: Contribution to journalArticle

Abstract

Among the various methods to obtain images of the Shubnikov phase in superconductors the high-resolution Faraday effect enables one to local (spatial resolution of about 0.8 μm) and dynamic observations of domain structures. In this paper the different types of flux penetration into the different kinds of high-Tc samples (sintered materials, single crystals and thin films) are presented. It is found that the obtained domain structures of single crystalline materials depend strongly on the geometry of the samples. The possibility to local observations allows to study the influence of various microstructures on the pinning behaviour. As a new feature of the high-Tc superconductors, it is shown that in the remanent state vortices of opposite polarity have nucleated at the sample edges. Domain patterns of high energy heavy-ion irradiated high-Tc samples show the advantages of a local determination of the acting volume pinning forces and critical current densities. Using the capability to dynamic observations, flux creep effects can be visualised.

Original languageEnglish
Pages (from-to)483-490
Number of pages8
JournalJournal of Alloys and Compounds
Volume195
Issue numberC
DOIs
Publication statusPublished - 1993 May 10
Externally publishedYes

Fingerprint

Superconducting materials
Fluxes
Imaging techniques
Heavy Ions
Faraday effect
Heavy ions
Creep
Vortex flow
Single crystals
Crystalline materials
Thin films
Microstructure
Geometry

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Magneto-optical imaging of Shubnikov phase. / Schuster, Th; Koblischka, Michael Rudolf; Kronmüller, H.

In: Journal of Alloys and Compounds, Vol. 195, No. C, 10.05.1993, p. 483-490.

Research output: Contribution to journalArticle

Schuster, Th ; Koblischka, Michael Rudolf ; Kronmüller, H. / Magneto-optical imaging of Shubnikov phase. In: Journal of Alloys and Compounds. 1993 ; Vol. 195, No. C. pp. 483-490.
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