Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors

Mostrar todas las versiones(2)

The AC susceptibility, χAC(T), with superimposed DC magnetic field, HDSa, has been measured as a function of temperature in bulk sintered LaSrCuO, for zero-field cooled (ZFC) and field-cooled (FC) samples. Results are analyzed within Kim's critical-state model extended to a granular superconduc...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bekeris, V., Ferrari, H., Acha, C., Levy, P., Polla, G., Leyva, G.
Formato: JOUR
Materias:
Calculations
High temperature superconductors
Hysteresis
Magnetic fields
Magnetic permeability
Magnetic variables measurement
Sintering
Thermal effects
AC susceptibility
Effective intergranular local field
Field cooled material
Field independent integranular critical state parameter
Granular superconductor
Hysteretical temperature dependence
Kims critical state model
Temperature dependent effective permeability
Zero field cooled material
Oxide superconductors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214534_v234_n1-2_p49_Bekeris
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09214534_v234_n1-2_p49_Bekeris
record_format dspace
spelling todo:paper_09214534_v234_n1-2_p49_Bekeris2023-10-03T15:45:32Z Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors Bekeris, V. Ferrari, H. Acha, C. Levy, P. Polla, G. Leyva, G. Calculations High temperature superconductors Hysteresis Magnetic fields Magnetic permeability Magnetic variables measurement Sintering Thermal effects AC susceptibility Effective intergranular local field Field cooled material Field independent integranular critical state parameter Granular superconductor Hysteretical temperature dependence Kims critical state model Temperature dependent effective permeability Zero field cooled material Oxide superconductors The AC susceptibility, χAC(T), with superimposed DC magnetic field, HDSa, has been measured as a function of temperature in bulk sintered LaSrCuO, for zero-field cooled (ZFC) and field-cooled (FC) samples. Results are analyzed within Kim's critical-state model extended to a granular superconductor, where the role of grains is to determine the temperature-dependent effective permeability, μeff(T), and the effective intergranular local field, Heffj(HDCa, T), which depends on the applied field, HDCa and the thermal and magnetic history, accounting for the observed hysteresis. A method to determine field-independent intergranular critical-state parameters (critical current at zero field and temperature-dependent density of pinning forces as well as μeff(T)) and the proper scaling of Heffj(HDCa, T) for ZFC and FC conditions is described. The calculated AC susceptibility for the whole temperature range for both magnetic conditions reproduces the main features of the experimental results. © 1994. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferrari, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Acha, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214534_v234_n1-2_p49_Bekeris
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Calculations
High temperature superconductors
Hysteresis
Magnetic fields
Magnetic permeability
Magnetic variables measurement
Sintering
Thermal effects
AC susceptibility
Effective intergranular local field
Field cooled material
Field independent integranular critical state parameter
Granular superconductor
Hysteretical temperature dependence
Kims critical state model
Temperature dependent effective permeability
Zero field cooled material
Oxide superconductors
spellingShingle Calculations
High temperature superconductors
Hysteresis
Magnetic fields
Magnetic permeability
Magnetic variables measurement
Sintering
Thermal effects
AC susceptibility
Effective intergranular local field
Field cooled material
Field independent integranular critical state parameter
Granular superconductor
Hysteretical temperature dependence
Kims critical state model
Temperature dependent effective permeability
Zero field cooled material
Oxide superconductors
Bekeris, V.
Ferrari, H.
Acha, C.
Levy, P.
Polla, G.
Leyva, G.
Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
topic_facet Calculations
High temperature superconductors
Hysteresis
Magnetic fields
Magnetic permeability
Magnetic variables measurement
Sintering
Thermal effects
AC susceptibility
Effective intergranular local field
Field cooled material
Field independent integranular critical state parameter
Granular superconductor
Hysteretical temperature dependence
Kims critical state model
Temperature dependent effective permeability
Zero field cooled material
Oxide superconductors
description The AC susceptibility, χAC(T), with superimposed DC magnetic field, HDSa, has been measured as a function of temperature in bulk sintered LaSrCuO, for zero-field cooled (ZFC) and field-cooled (FC) samples. Results are analyzed within Kim's critical-state model extended to a granular superconductor, where the role of grains is to determine the temperature-dependent effective permeability, μeff(T), and the effective intergranular local field, Heffj(HDCa, T), which depends on the applied field, HDCa and the thermal and magnetic history, accounting for the observed hysteresis. A method to determine field-independent intergranular critical-state parameters (critical current at zero field and temperature-dependent density of pinning forces as well as μeff(T)) and the proper scaling of Heffj(HDCa, T) for ZFC and FC conditions is described. The calculated AC susceptibility for the whole temperature range for both magnetic conditions reproduces the main features of the experimental results. © 1994.
format JOUR
author Bekeris, V.
Ferrari, H.
Acha, C.
Levy, P.
Polla, G.
Leyva, G.
author_facet Bekeris, V.
Ferrari, H.
Acha, C.
Levy, P.
Polla, G.
Leyva, G.
author_sort Bekeris, V.
title Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
title_short Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
title_full Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
title_fullStr Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
title_full_unstemmed Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
title_sort hysteretical temperature dependence of ac susceptibility in granular high-tc superconductors
url http://hdl.handle.net/20.500.12110/paper_09214534_v234_n1-2_p49_Bekeris
work_keys_str_mv AT bekerisv hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
AT ferrarih hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
AT achac hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
AT levyp hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
AT pollag hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
AT leyvag hystereticaltemperaturedependenceofacsusceptibilityingranularhightcsuperconductors
_version_ 1807318333451665408

Ejemplares similares