Magneto-optical imaging of Shubnikov phase

Th Schuster, M. R. Koblischka, H. Kronmüller

研究成果: Article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)483-490
ページ数8
ジャーナルJournal of Alloys and Compounds
195
C
DOI
出版ステータスPublished - 1993 5月 10
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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