Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al 2 O 3 nanoparticles



Document title: Magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with α-Al 2 O 3 nanoparticles
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000438992
ISSN: 0035-001X
Authors: 1
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2
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4
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5
Institutions: 1Universidad de Camagüey, Departamento de Física, Camagüey. Cuba
2Universidad de Granma, Departamento de Ciencias Básicas, Bayamo, Granma. Cuba
3Universidade Federal do Amazonas, Departamento de Física, Manaus, Amazonas. Brasil
4Universidade de Sao Paulo, Instituto de Física, Sao Paulo. Brasil
5Universidad de Oriente, Departamento de Física, Santiago de Cuba. Cuba
Year:
Season: Ene-Feb
Volumen: 66
Number: 1
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract A preliminary study of the magnetic relaxation in (Bi, Pb)-2223 superconducting ceramics doped with ®-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 region where 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
Disciplines: Física y astronomía
Keyword: Superconductividad,
Cupratos bi-basados,
Relajación magnética,
Vórtices,
Defectos planos
Keyword: Superconductivity,
Bi-based cuprates,
Magnetic relaxation,
Vortices,
Doping,
Planar defects
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