AC susceptibility and local intergranular magnetic field in high-Tc superconductors

Mostrar todas las versiones(2)

AC susceptibility of the granular high-Tc superconductor La1.8Sr0.2CuO4-σ has been measured at 4.5 K as a function of applied DC field HDC a for different AC amplitudes Hm a. Hysteresis related to thermal and magnetic history of the sample was studied and higher screening capabilities in the field-c...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Levy, P., Ferrari, H., Bekeris, V., Acha, C.
Formato: JOUR
Materias:
Cooling
Copper oxides
Crystals
Diamagnetism
Granular materials
Hysteresis
Lanthanum compounds
Magnetic field effects
Magnetic properties
Mathematical models
Superconductivity
Thermodynamic properties
AC susceptibility
Cooled virgin sample
Diamagnetic response
Granular superconductors
Intergranular magnetic fields
Kim's critical state model
Lanthanum strontium copper oxides
Screening capabilities
High temperature superconductors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214534_v214_n1-2_p111_Levy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09214534_v214_n1-2_p111_Levy
record_format dspace
spelling todo:paper_09214534_v214_n1-2_p111_Levy2023-10-03T15:45:31Z AC susceptibility and local intergranular magnetic field in high-Tc superconductors Levy, P. Ferrari, H. Bekeris, V. Acha, C. Cooling Copper oxides Crystals Diamagnetism Granular materials Hysteresis Lanthanum compounds Magnetic field effects Magnetic properties Mathematical models Superconductivity Thermodynamic properties AC susceptibility Cooled virgin sample Diamagnetic response Granular superconductors Intergranular magnetic fields Kim's critical state model Lanthanum strontium copper oxides Screening capabilities High temperature superconductors AC susceptibility of the granular high-Tc superconductor La1.8Sr0.2CuO4-σ has been measured at 4.5 K as a function of applied DC field HDC a for different AC amplitudes Hm a. Hysteresis related to thermal and magnetic history of the sample was studied and higher screening capabilities in the field-cooled virgin samples compared to the zero-field-cooled virgin samples were observed for all AC amplitudes. For both conditions the real and imaginary susceptibility qualitatively shows the DC and AC dependence predicted by Kim's critical state model. AC losses and enhanced diamagnetic response upon reducing HDC a in a field-cooled condition were studied as a function of Hm a. We have used Kim's intergranular critical state model to evaluate AC susceptibility as a function of HDC a for different Hm a. As the applied field differs from the local field in intergranular regions, we performed an appropriate scaling to describe measured values of AC susceptibility. Through this scaling process the local field at the junctions is determined for different magnetic conditions. © 1993. Fil:Levy, P. 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:Bekeris, V. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214534_v214_n1-2_p111_Levy
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cooling
Copper oxides
Crystals
Diamagnetism
Granular materials
Hysteresis
Lanthanum compounds
Magnetic field effects
Magnetic properties
Mathematical models
Superconductivity
Thermodynamic properties
AC susceptibility
Cooled virgin sample
Diamagnetic response
Granular superconductors
Intergranular magnetic fields
Kim's critical state model
Lanthanum strontium copper oxides
Screening capabilities
High temperature superconductors
spellingShingle Cooling
Copper oxides
Crystals
Diamagnetism
Granular materials
Hysteresis
Lanthanum compounds
Magnetic field effects
Magnetic properties
Mathematical models
Superconductivity
Thermodynamic properties
AC susceptibility
Cooled virgin sample
Diamagnetic response
Granular superconductors
Intergranular magnetic fields
Kim's critical state model
Lanthanum strontium copper oxides
Screening capabilities
High temperature superconductors
Levy, P.
Ferrari, H.
Bekeris, V.
Acha, C.
AC susceptibility and local intergranular magnetic field in high-Tc superconductors
topic_facet Cooling
Copper oxides
Crystals
Diamagnetism
Granular materials
Hysteresis
Lanthanum compounds
Magnetic field effects
Magnetic properties
Mathematical models
Superconductivity
Thermodynamic properties
AC susceptibility
Cooled virgin sample
Diamagnetic response
Granular superconductors
Intergranular magnetic fields
Kim's critical state model
Lanthanum strontium copper oxides
Screening capabilities
High temperature superconductors
description AC susceptibility of the granular high-Tc superconductor La1.8Sr0.2CuO4-σ has been measured at 4.5 K as a function of applied DC field HDC a for different AC amplitudes Hm a. Hysteresis related to thermal and magnetic history of the sample was studied and higher screening capabilities in the field-cooled virgin samples compared to the zero-field-cooled virgin samples were observed for all AC amplitudes. For both conditions the real and imaginary susceptibility qualitatively shows the DC and AC dependence predicted by Kim's critical state model. AC losses and enhanced diamagnetic response upon reducing HDC a in a field-cooled condition were studied as a function of Hm a. We have used Kim's intergranular critical state model to evaluate AC susceptibility as a function of HDC a for different Hm a. As the applied field differs from the local field in intergranular regions, we performed an appropriate scaling to describe measured values of AC susceptibility. Through this scaling process the local field at the junctions is determined for different magnetic conditions. © 1993.
format JOUR
author Levy, P.
Ferrari, H.
Bekeris, V.
Acha, C.
author_facet Levy, P.
Ferrari, H.
Bekeris, V.
Acha, C.
author_sort Levy, P.
title AC susceptibility and local intergranular magnetic field in high-Tc superconductors
title_short AC susceptibility and local intergranular magnetic field in high-Tc superconductors
title_full AC susceptibility and local intergranular magnetic field in high-Tc superconductors
title_fullStr AC susceptibility and local intergranular magnetic field in high-Tc superconductors
title_full_unstemmed AC susceptibility and local intergranular magnetic field in high-Tc superconductors
title_sort ac susceptibility and local intergranular magnetic field in high-tc superconductors
url http://hdl.handle.net/20.500.12110/paper_09214534_v214_n1-2_p111_Levy
work_keys_str_mv AT levyp acsusceptibilityandlocalintergranularmagneticfieldinhightcsuperconductors
AT ferrarih acsusceptibilityandlocalintergranularmagneticfieldinhightcsuperconductors
AT bekerisv acsusceptibilityandlocalintergranularmagneticfieldinhightcsuperconductors
AT achac acsusceptibilityandlocalintergranularmagneticfieldinhightcsuperconductors
_version_ 1807322593851604992

Ejemplares similares