The flux pinning force and vortex phase diagram of single crystal

The flux pinning force density (F sub()p of the single crystalline FeTe sub(0.60)Se sub(0.40) superconductor has been calculated from magnetization measurements. The normalized F sub()pversus [inline image] curves are scaled using the Dew-Hughes's formula f(h)[inline image]h super()p1-h) super(...

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Bibliographic Details
Published inSolid state communications Vol. 151; no. 3; pp. 216 - 218
Main Authors Yadav, C.S., Paulose, P.L.
Format Journal Article
LanguageEnglish
Published 01.02.2011
Subjects
Density
Filled plastics
Fluid flow
Flux pinning
Phase diagrams
Pinning
Transition temperature
Vortices
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Summary:The flux pinning force density (F sub()p of the single crystalline FeTe sub(0.60)Se sub(0.40) superconductor has been calculated from magnetization measurements. The normalized F sub()pversus [inline image] curves are scaled using the Dew-Hughes's formula f(h)[inline image]h super()p1-h) super()qto underline the pinning mechanism in the compound. The obtained values of pinning parameters 'p' and 'q' indicate point core pinning of the normal centers along with the presence of the surface pinning. The vortex phase diagram has also been drawn for the first time for FeTe sub(0.60)Se sub(0.40), which has very high values of critical current density [inline image] at [inline image] and, the upper critical field [inline image], with a reasonably high transition temperature [inline image].
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ISSN:0038-1098
DOI:10.1016/j.ssc.2010.11.030