The quantitative determination of flux-density gradients in type-II superconductors by means of the magneto-optical faraday effect

Habermeier, H.–U.; Aoki, Ryôzô; Kronmüller, H.

doi:10.1002/pssa.2210500122

Cited by 25 publications

(2 citation statements)

References 17 publications

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“…They found that the admixture needed depended strongly on the evaporation process. This method was successfully used by various authors [25,32,33,34,35]. The HRF technique was further optimized using the single-component EuSe layers [26,36].…”

Section: Historical Developmentmentioning

confidence: 99%

Magneto-optical investigations of superconductors

Koblischka

Wijngaarden

1995

Supercond. Sci. Technol.

258

183

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Magneto-optical investigations of the flux distributions in high-T, superconductors are reviewed. The various techniques (which are all based on the Faraday effect) are compared with each other concerning resolution and working range of temperature and external magnetic field. A short description of the historical development of the magneto-optical methods is given and the existing equipment is classified. Various aspects of flux visualization are presented and special observations made by means of magneto-optical techniques are shown. The capability of the magneto-optical techniques to observe dynamic processes allows Observation of flux motion due to thermal activation or even quantum creep, and under the influence of transport currents. It is shown that magneto-optical techniques are a unique tool to show that flux patterns are extremely sensitive to the presence of defects.

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Section: Historical Developmentmentioning

confidence: 99%

Magneto-optical investigations of superconductors

Koblischka

Wijngaarden

1995

Supercond. Sci. Technol.

258

183

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“…In this historical review the fundamentals of the magnetooptical technique are described and the development during the period 1970 -1980 is treated in some detail. During this period there have been three major developments, the introduction of the high resolution MOI by Kirchner [10], the study of timedependent and current-induced phenomena by Huebener [11] and the quantitative determination of flux density gradients in type -II superconductors by Habermeier [12]. It is the purpose of this paper to give some examples of the early experiments using type -I SC's and focus on the development of MOI towards a quantitative tool to investigate flux-density gradients and pinning forces in type -II SC's.…”

Section: Introductionmentioning

confidence: 99%

Paving the Way for the Success of Magneto-Optics

Habermeier

2004

Magneto-Optical Imaging

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Quantitative high resolution magneto-optical imaging of flux structures as developed in the period 1970-1980 gained much popularity after the discovery of high temperature superconductivity in cuprates. In this historical review the developments of the early days are described with applications of this technique to study flux penetration in type-I and the determination of pinning forces in type-II superconductors.

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Magneto-optical investigation of flux penetration in plastically deformed niobium monocrystals

Habermeier

Klein

Aoki

et al. 1979

Phys. Stat. Sol. (a)

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The penetration of the Shubnikov phase into well annealed and plastically deformed monocrystalline niobium disks is investigated by means of the magneto‐optical Faraday effect. For a plastic shear of a ≧ 50% the Shubnikov phase penetrates into plastically deformed specimens highly anisotropic. This anisotropic arrangement of the domains is attributed to the anisotropic interaction between flux lines and the arrangement of edge dislocations.

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The quantitative determination of flux-density gradients in type-II superconductors by means of the magneto-optical faraday effect

Abstract: For magnetic flux‐density measurements in Nb by means of the magneto‐optical Faraday effect a calibration procedure is developed which is based on the comparison with Pb‐specimens. This technique is applied for the study of flux‐density profiles of niobium monocrystals.

Cited by 25 publications

References 17 publications

Magneto-optical investigations of superconductors

Magneto-optical investigations of superconductors

Paving the Way for the Success of Magneto-Optics

Magneto-optical investigation of flux penetration in plastically deformed niobium monocrystals

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