MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS
The transport critical current densities (Jc) in magnetic fields up to 14 T at 4.2 K have been measured on melt-textured Bi-Sr-Ca-Cu-O samples on MgO substrates. The samples were multiphase with partial alignment of the grains. Jc values of 1.58*104 A/cm2, 1.13*104 A/cm2 and 8.2*103 A/cm2were obtain...
| Main Authors: | , , , , |
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| Format: | Conference item |
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1992
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| _version_ | 1826306763376295936 |
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| author | Kottman, P Jones, H Oswald, P Asplin, S Grovenor, C |
| author_facet | Kottman, P Jones, H Oswald, P Asplin, S Grovenor, C |
| author_sort | Kottman, P |
| collection | OXFORD |
| description | The transport critical current densities (Jc) in magnetic fields up to 14 T at 4.2 K have been measured on melt-textured Bi-Sr-Ca-Cu-O samples on MgO substrates. The samples were multiphase with partial alignment of the grains. Jc values of 1.58*104 A/cm2, 1.13*104 A/cm2 and 8.2*103 A/cm2were obtained in magnetic fields B=0 T, 1 T and 14 T, respectively. The magnetic field dependence of Jc was relatively flat in fields higher than 1 T. The flux pinning force density increased monotonically in the whole range of fields. The shape of the current-voltage characteristics has been examined and shown to follow approximately a power-law behaviour E approximately Jn in the range of E-values of 10 -4-10-1 V/m with n approximately=30. Preliminary results of Jc(B,T) measurements at higher temperatures are presented. |
| first_indexed | 2024-03-07T06:52:51Z |
| format | Conference item |
| id | oxford-uuid:fd1cf5ce-dabf-421e-9770-f5e1a3488d90 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:52:51Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:fd1cf5ce-dabf-421e-9770-f5e1a3488d902022-03-27T13:26:26ZMAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORSConference itemhttp://purl.org/coar/resource_type/c_5794uuid:fd1cf5ce-dabf-421e-9770-f5e1a3488d90Symplectic Elements at Oxford1992Kottman, PJones, HOswald, PAsplin, SGrovenor, CThe transport critical current densities (Jc) in magnetic fields up to 14 T at 4.2 K have been measured on melt-textured Bi-Sr-Ca-Cu-O samples on MgO substrates. The samples were multiphase with partial alignment of the grains. Jc values of 1.58*104 A/cm2, 1.13*104 A/cm2 and 8.2*103 A/cm2were obtained in magnetic fields B=0 T, 1 T and 14 T, respectively. The magnetic field dependence of Jc was relatively flat in fields higher than 1 T. The flux pinning force density increased monotonically in the whole range of fields. The shape of the current-voltage characteristics has been examined and shown to follow approximately a power-law behaviour E approximately Jn in the range of E-values of 10 -4-10-1 V/m with n approximately=30. Preliminary results of Jc(B,T) measurements at higher temperatures are presented. |
| spellingShingle | Kottman, P Jones, H Oswald, P Asplin, S Grovenor, C MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title | MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title_full | MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title_fullStr | MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title_full_unstemmed | MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title_short | MAGNETIC-FIELD DEPENDENCE OF THE TRANSPORT CRITICAL CURRENT-DENSITY IN MELT-TEXTURED BI-SR-CA-CU-O HIGH-TC SUPERCONDUCTORS |
| title_sort | magnetic field dependence of the transport critical current density in melt textured bi sr ca cu o high tc superconductors |
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