AC susceptibility with superimposed DC magnetic field in a current biased granular high Tc superconductor
We have investigated the effect in AC magnetic susceptibility, κ{script}ac=κ{script}′+jκ{script} ″, of both DC transport current, Jt, and DC magnetic field, Hdc, in polycristalline HTSC. Two regimes are observed: at low DC fields critical state is modified by the current self field; but as Hdc is in...
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| Autores principales: | , , , , |
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| Publicado: |
1994
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214534_v235-240_nPART5_p3227_Codner http://hdl.handle.net/20.500.12110/paper_09214534_v235-240_nPART5_p3227_Codner |
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| Sumario: | We have investigated the effect in AC magnetic susceptibility, κ{script}ac=κ{script}′+jκ{script} ″, of both DC transport current, Jt, and DC magnetic field, Hdc, in polycristalline HTSC. Two regimes are observed: at low DC fields critical state is modified by the current self field; but as Hdc is increased, Jt becomes dissipative (Vdc≠0) and κ{script}ac is determined by the samples's "resistance". © 1994. |
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