Fulx-pinning mechanism and activation energy of MgB2 doped with 10 wt % malic- acid has been investigated by measurement of critical current density and resistivity as a function of magnetic fields and temperatures. The field dependence of the critical current density, Jc(B), was analyzed within the collective pinning model. A crossover field, Bsb, from the single vortex to the small vortex bundle-pinning regime was observed. For sintered sample, the temperature dependence of Bsb(T) at low temperature is in good agreement with the δℓ pinning mechanism, i.e., pinning associated with charge-carrier mean free path fluctuation. The activation energy was decreased linearly by increasing magnetic field.
Ghorbani,S , Bashi,M and Broghani,A . (2019). Fulx-pinning mechanism and activation energy in malic acid-doped MgB2. Iranian Journal of Physics Research, 10(2), 107-111.
MLA
Ghorbani,S , , Bashi,M , and Broghani,A . "Fulx-pinning mechanism and activation energy in malic acid-doped MgB2", Iranian Journal of Physics Research, 10, 2, 2019, 107-111.
HARVARD
Ghorbani S, Bashi M, Broghani A. (2019). 'Fulx-pinning mechanism and activation energy in malic acid-doped MgB2', Iranian Journal of Physics Research, 10(2), pp. 107-111.
CHICAGO
S Ghorbani, M Bashi and A Broghani, "Fulx-pinning mechanism and activation energy in malic acid-doped MgB2," Iranian Journal of Physics Research, 10 2 (2019): 107-111,
VANCOUVER
Ghorbani S, Bashi M, Broghani A. Fulx-pinning mechanism and activation energy in malic acid-doped MgB2. Iranian Journal of Physics Research. 2019;10(2):107-111 (In Persian).
