Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles | Zendy

M. Hernández Wolpez | Zendy; Leandro Gutierrez | Zendy; I. GarcíaFornaris | Zendy; E. GoveaAlcaide | Zendy; F. Abud | Zendy; R. F. Jardim | Zendy; P. Muné | Zendy

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Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles

Author(s) -

M. Hernández Wolpez,

Leandro Gutierrez,

I. GarcíaFornaris,

E. GoveaAlcaide,

F. Abud,

R. F. Jardim,

P. Muné

Publication year - 2019

Publication title -

revista mexicana de física

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.181

H-Index - 25

eISSN - 2683-2224

pISSN - 0035-001X

DOI - 10.31349/revmexfis.66.42

Subject(s) - materials science , superconductivity , vortex , condensed matter physics , relaxation (psychology) , doping , ceramic , pellet , nanoparticle , planar , magnetic relaxation , magnetic field , nanotechnology , magnetization , composite material , thermodynamics , physics , optoelectronics , psychology , social psychology , computer graphics (images) , quantum mechanics , computer science

A preliminary study of the magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al2O3 nanoparticles is presented, taking as starting point the measurements of the M(t) dependence, both in samples in the form of powder as in pellet. The relaxation of the three types of vortices that can exist inside these materials is analyzed, emphasizing on the intragranular regionwhere the planar defects exist and, consequently, Abrikosov-Josephson vortices emerge. Finally, interesting results of the comparison between the behavior of the samples in the form of powder and in the form of pellet are shown from the estimation of the pinning energy of the vortices.

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