The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics
We report investigations of the magnetization and the associated critical current density of a Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramic sample in T and H varying from 10(-2) to 7x10(4) Oe and 4.2 K to T-c approximate to 110 K. At high enough temperature, the M vs H relationship exhibits 5 differen...
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| Format: | Conference item |
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1995
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| _version_ | 1826258089966305280 |
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| author | Senoussi, S Kilic, A Wivel, S Grovenor, C |
| author_facet | Senoussi, S Kilic, A Wivel, S Grovenor, C |
| author_sort | Senoussi, S |
| collection | OXFORD |
| description | We report investigations of the magnetization and the associated critical current density of a Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramic sample in T and H varying from 10(-2) to 7x10(4) Oe and 4.2 K to T-c approximate to 110 K. At high enough temperature, the M vs H relationship exhibits 5 different regimes reflecting various modes of penetration of flux through the material: (1) At H less than or equal to 2 Oe, the M(H) function is linear, reversible and controlled by the macroscopic demagnetizing factor N of the pellet. (2) As H is further increased one observes a tiny hysteresis cycle in a narrow field domain of about 40 Oe. (3) At still higher H and up to H-cl,H-g of the grains, the M(H) relationship becomes again linear and reversible but with a slope reduced by a factor of four as compared to the initial one. (4) For H>H-cl,H-g and up to the irreversibility line we observe the usual regime of strong irreversibility and deduce the inter-grain current density using a modified Bean model that accounts for the anisotropy. |
| first_indexed | 2024-03-06T18:28:31Z |
| format | Conference item |
| id | oxford-uuid:08d10d3e-6b02-4c27-b5ed-e6bcd6c3e6da |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:28:31Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:08d10d3e-6b02-4c27-b5ed-e6bcd6c3e6da2022-03-26T09:14:56ZThe field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramicsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:08d10d3e-6b02-4c27-b5ed-e6bcd6c3e6daSymplectic Elements at Oxford1995Senoussi, SKilic, AWivel, SGrovenor, CWe report investigations of the magnetization and the associated critical current density of a Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramic sample in T and H varying from 10(-2) to 7x10(4) Oe and 4.2 K to T-c approximate to 110 K. At high enough temperature, the M vs H relationship exhibits 5 different regimes reflecting various modes of penetration of flux through the material: (1) At H less than or equal to 2 Oe, the M(H) function is linear, reversible and controlled by the macroscopic demagnetizing factor N of the pellet. (2) As H is further increased one observes a tiny hysteresis cycle in a narrow field domain of about 40 Oe. (3) At still higher H and up to H-cl,H-g of the grains, the M(H) relationship becomes again linear and reversible but with a slope reduced by a factor of four as compared to the initial one. (4) For H>H-cl,H-g and up to the irreversibility line we observe the usual regime of strong irreversibility and deduce the inter-grain current density using a modified Bean model that accounts for the anisotropy. |
| spellingShingle | Senoussi, S Kilic, A Wivel, S Grovenor, C The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title | The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title_full | The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title_fullStr | The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title_full_unstemmed | The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title_short | The field and temperature dependencies of the intra-grain and inter-grain critical current densities in (Tl0.5Pb0.5)(Sr0.8Ba0.2)(2)Ca2Cu3Ox ceramics |
| title_sort | field and temperature dependencies of the intra grain and inter grain critical current densities in tl0 5pb0 5 sr0 8ba0 2 2 ca2cu3ox ceramics |
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