S K Hasanain et al 1992 Supercond. Sci. Technol. 5 92 doi:10.1088/0953-2048/5/2/011
Log to non-log variation of magnetic relaxation: studies in steady and varying fields
S K Hasanain, A Mumtaz and K Zaheer
Show affiliationsMagnetic relaxation studies have been performed in low fields for small times (t<or=300 s). Two separate cases are reported. In the first the relaxation is observed in constant applied fields, while in the second, the 'relaxation' due to a steady but small field decrease has been studied. For the case of steady fields, a logarithmic time variation is observed, while in decreasing fields the variation is of a stretched exponential type. Effects of H and H on the relaxation are also discussed. The data are analysed in the spirit of the critical state and thermally activated flux flow models.
- PACS
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74.72.-h Cuprate superconductors (high-Tc and insulating parent compounds)
- Subjects
- Dates
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Issue 2 (February 1992)
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Log to non-log variation of magnetic relaxation: studies in steady and varying fields
S K Hasanain et al 1992 Supercond. Sci. Technol. 5 92
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