Title : ( Effects of the sintering temperature on the flux-pinning mechanism and the activation energy of malic-acid doped MgB2 )
Authors: Shaban Reza Ghorbani , M Bashi , M S A Hossain , G Peleckis ,
Full TextAbstract
The flux-pinning mechanism and activation energy of 10 wt % malic acid-doped MgB2 were investigated by measuring of the critical current density and resistivity as a function ofmagnetic field and temperature. A crossover field, Bsb, was observed from the single vortex to the small vortex bundle pinning regime. For the sintered sample, the temperature dependence of Bsb (T) at low temperature is in good agreement with the δℓpinning mechanism, i.e., pinning associated with charge-carrier mean free path fluctuation. The activation energy was decreased by increasing the magnetic field and increased by increasing sintering temperature.
Keywords
, Malic-acid doped MgB2, Critical current density, Flux-pinning mechanism, Activation energy
@article{paperid:1032593,
author = {Ghorbani, Shaban Reza and M Bashi and M S A Hossain and G Peleckis},
title = {Effects of the sintering temperature on the flux-pinning mechanism and the activation energy of malic-acid doped MgB2},
journal = {پژوهش فیزیک ایران- Iranian Journal of Physics Research},
year = {2013},
volume = {12},
number = {3},
month = {February},
issn = {1682-6957},
pages = {43--48},
numpages = {5},
keywords = {Malic-acid doped MgB2; Critical current density; Flux-pinning mechanism; Activation energy},
}
%0 Journal Article
%T Effects of the sintering temperature on the flux-pinning mechanism and the activation energy of malic-acid doped MgB2
%A Ghorbani, Shaban Reza
%A M Bashi
%A M S A Hossain
%A G Peleckis
%J پژوهش فیزیک ایران- Iranian Journal of Physics Research
%@ 1682-6957
%D 2013
