The electrical resistivity vs temperature for the 10 wt % malic acid doped and the 5 wt % nanocarbon doped sample sintered at . For comparison, data from Ref. 10 for the 10 wt % silicone oil doped sample sintered at are also shown.
Magnetic dependence of the critical current density for malic acid and nanocarbon doped . Results for of silicone oil doped (Ref. 10) are also shown.
The upper critical and irreversibility fields of 10 wt % malic acid, 5 wt % nanocarbon, and 10 wt % silicone oil doped as a function of temperature. The solid curves are fits to , with fitting parameter . Data for silicone oil doped sample have been taken from Ref. 10.
Normalized temperature dependence of the crossover field . The solid curves are fits to Eq. (4). Inset: double logarithmic plot of as a function of , with the solid line showing the fit given by Eq. (2). The crossover fields and are shown by arrows. The data for the silicone-oil doped and undoped samples are extracted from Refs. 10 and 24, respectively.
and pinning contributions as a function of normalized temperature for 10 wt % malic acid doped (squares) and 5 wt % nanocarbon doped sintered at (stars).
(a) pinning and (b) pinning contributions as a function of normalized temperature for undoped sintered at (triangles), 10 wt % malic acid doped (squares), 5 wt % nanocarbon doped sintered at (stars), and 10 wt % silicone oil doped sintered at (circles) from Ref. 10.
The resistivity at 40 and 300 K, and the connectivity factor of 5 wt % nanocarbon, 10 wt % malic acid, and 10 wt % silicone oil doped . The resistivity data for the silicone oil doped sample are extracted from Ref. 10.
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