Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor
Addition of nonsuperconducting phases, such as carbon nanotubes, can modify the superconducting properties of MgB 2 samples, improving the critical current density and upper critical field. A full understanding of the flux creep mechanism involved is crucial to the development of superconducting mag...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00218979_v114_n2_p_Pasquini |
| Aporte de: |
| id |
todo:paper_00218979_v114_n2_p_Pasquini |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_00218979_v114_n2_p_Pasquini2023-10-03T14:22:16Z Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor Pasquini, G. Serquis, A. Moreno, A.J. Serrano, G. Civale, L. Correlation lengths Flux creep mechanism Low temperatures Persistent mode Relaxation property Single vortices Superconducting properties Upper critical fields Creep Superconducting magnets Superconducting wire Superconductivity Carbon nanotubes Addition of nonsuperconducting phases, such as carbon nanotubes, can modify the superconducting properties of MgB 2 samples, improving the critical current density and upper critical field. A full understanding of the flux creep mechanism involved is crucial to the development of superconducting magnets in persistent mode, one of the main thrusts for the development of MgB 2 wires. In this paper we present a creep study in bulk MgB 2 samples, pure and with different amounts of carbon nanotubes additions. We conclude that the most consistent picture at low temperatures is a single vortex pinning regime, where the correlation length is limited by the grain size. We introduce a novel analysis that allows us to identify the region where the Anderson-Kim model is valid. © 2013 AIP Publishing LLC. Fil:Pasquini, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Serquis, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Civale, L. 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_00218979_v114_n2_p_Pasquini |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Correlation lengths Flux creep mechanism Low temperatures Persistent mode Relaxation property Single vortices Superconducting properties Upper critical fields Creep Superconducting magnets Superconducting wire Superconductivity Carbon nanotubes |
| spellingShingle |
Correlation lengths Flux creep mechanism Low temperatures Persistent mode Relaxation property Single vortices Superconducting properties Upper critical fields Creep Superconducting magnets Superconducting wire Superconductivity Carbon nanotubes Pasquini, G. Serquis, A. Moreno, A.J. Serrano, G. Civale, L. Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| topic_facet |
Correlation lengths Flux creep mechanism Low temperatures Persistent mode Relaxation property Single vortices Superconducting properties Upper critical fields Creep Superconducting magnets Superconducting wire Superconductivity Carbon nanotubes |
| description |
Addition of nonsuperconducting phases, such as carbon nanotubes, can modify the superconducting properties of MgB 2 samples, improving the critical current density and upper critical field. A full understanding of the flux creep mechanism involved is crucial to the development of superconducting magnets in persistent mode, one of the main thrusts for the development of MgB 2 wires. In this paper we present a creep study in bulk MgB 2 samples, pure and with different amounts of carbon nanotubes additions. We conclude that the most consistent picture at low temperatures is a single vortex pinning regime, where the correlation length is limited by the grain size. We introduce a novel analysis that allows us to identify the region where the Anderson-Kim model is valid. © 2013 AIP Publishing LLC. |
| format |
JOUR |
| author |
Pasquini, G. Serquis, A. Moreno, A.J. Serrano, G. Civale, L. |
| author_facet |
Pasquini, G. Serquis, A. Moreno, A.J. Serrano, G. Civale, L. |
| author_sort |
Pasquini, G. |
| title |
Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| title_short |
Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| title_full |
Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| title_fullStr |
Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| title_full_unstemmed |
Carbon nanotubes effects on the relaxation properties and critical current densities of MgB 2 superconductor |
| title_sort |
carbon nanotubes effects on the relaxation properties and critical current densities of mgb 2 superconductor |
| url |
http://hdl.handle.net/20.500.12110/paper_00218979_v114_n2_p_Pasquini |
| work_keys_str_mv |
AT pasquinig carbonnanotubeseffectsontherelaxationpropertiesandcriticalcurrentdensitiesofmgb2superconductor AT serquisa carbonnanotubeseffectsontherelaxationpropertiesandcriticalcurrentdensitiesofmgb2superconductor AT morenoaj carbonnanotubeseffectsontherelaxationpropertiesandcriticalcurrentdensitiesofmgb2superconductor AT serranog carbonnanotubeseffectsontherelaxationpropertiesandcriticalcurrentdensitiesofmgb2superconductor AT civalel carbonnanotubeseffectsontherelaxationpropertiesandcriticalcurrentdensitiesofmgb2superconductor |
| _version_ |
1782024058710261760 |