I have resistivity data as a function of temperature at different magnetic fields. I want to know the formulas to obtain the irreversibility line (IL) field Hirr(T) and upper critical field Hc2(T) from transport measurements? Hirr(T) can be obtained from M-H curves at different temperatures. Please help me to understand these two fields.
The ireversibility line can be obtained from magneto-resistance measurement as ref. W. K. Kwok, et al. Physical Review Letters 69/23 (1992) 3370. You can find detail from my PhD thesis at University of Birmingham, UK (e-thesis online). What is the maximum applied field for your measurement?
Hope it will help you.
Thank you so much. I have data upto 11 Tesla. I saw your thesis regarding details of irreversibility field by magnetoresistance data but I could not relationship between Hirr and T. Please elaborate.
https://www.researchgate.net/publication/216465112_ORIGIN_OF_ORDERING_OSCILLATION_OF_LOCAL_COMPOSITION_IN_MELT-PROCESSED_REBa2Cu3O7-_SUPERCONDUCTORS_%28RE_Sm_Eu_Gd%29?ev=prf_pub
Hirr can be determined from ZFC and FC conditions while Hc2 can be deduced from reversible parts.
Article ORIGIN OF ORDERING OSCILLATION OF LOCAL COMPOSITION IN MELT-...
I suggest you look at these articles,
http://iopscience.iop.org/1742-6596/153/1/012007
and
We explain the most commonly used techniques developed to determine the IL our this article. http://link.springer.com/article/10.1007%2Fs10948-010-0780-2
@İbrahim Düzgün .. Thank you so much. the references are very useful.
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