Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure
Thermoelectric power (TEP) of YBa2Cu3O7-X (123) and YBa2Cu4O8 (124) samples are measured as a function of pressure. The TEP of an as-sintered 123 polycrystalline sample shows a broad maximum around 1.25 GPa whereas that of the cold-pressed sample decreases steadily. The ab-plane TEP of 123 single cr...
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| Format: | Article |
| Language: | English |
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Wiley
1993-01-01
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| Series: | Active and Passive Electronic Components |
| Online Access: | http://dx.doi.org/10.1155/1993/32872 |
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| author | Sheela K. Ramasesha |
| author_facet | Sheela K. Ramasesha |
| author_sort | Sheela K. Ramasesha |
| collection | DOAJ |
| description | Thermoelectric power (TEP) of YBa2Cu3O7-X (123) and YBa2Cu4O8 (124) samples are measured as a function of pressure. The TEP of an as-sintered 123 polycrystalline sample shows a broad maximum around 1.25 GPa whereas that of the cold-pressed sample decreases steadily. The ab-plane TEP of 123
single crystal decreases monotonically and the c-axis TEP exhibits a maximum around 1.5 GPa. Disappearance
of the broad maximum in the polycrystalline sample upon cold-pressing is interpreted in
terms of the crystallite orientation occurring under pressure. TEP of the 124 polycrystalline sample
decreases sharply up to 4.5 GPa and at a lower rate with further increase in pressure, a trend similar
to that is observed in the variation of Tc as a function of pressure. |
| format | Article |
| id | doaj-art-57b468c5be374082b4af5af025dddcb0 |
| institution | Kabale University |
| issn | 0882-7516 1563-5031 |
| language | English |
| publishDate | 1993-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Active and Passive Electronic Components |
| spelling | doaj-art-57b468c5be374082b4af5af025dddcb02025-02-03T01:24:03ZengWileyActive and Passive Electronic Components0882-75161563-50311993-01-01153-414715310.1155/1993/32872Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under PressureSheela K. Ramasesha0Materials Science Division, National Aeronautical Laboratory, Bangalore 560017, IndiaThermoelectric power (TEP) of YBa2Cu3O7-X (123) and YBa2Cu4O8 (124) samples are measured as a function of pressure. The TEP of an as-sintered 123 polycrystalline sample shows a broad maximum around 1.25 GPa whereas that of the cold-pressed sample decreases steadily. The ab-plane TEP of 123 single crystal decreases monotonically and the c-axis TEP exhibits a maximum around 1.5 GPa. Disappearance of the broad maximum in the polycrystalline sample upon cold-pressing is interpreted in terms of the crystallite orientation occurring under pressure. TEP of the 124 polycrystalline sample decreases sharply up to 4.5 GPa and at a lower rate with further increase in pressure, a trend similar to that is observed in the variation of Tc as a function of pressure.http://dx.doi.org/10.1155/1993/32872 |
| spellingShingle | Sheela K. Ramasesha Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure Active and Passive Electronic Components |
| title | Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure |
| title_full | Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure |
| title_fullStr | Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure |
| title_full_unstemmed | Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure |
| title_short | Thermoelectric Power of YBa2Cu3O7-X and YBa2Cu4O8 Under Pressure |
| title_sort | thermoelectric power of yba2cu3o7 x and yba2cu4o8 under pressure |
| url | http://dx.doi.org/10.1155/1993/32872 |
| work_keys_str_mv | AT sheelakramasesha thermoelectricpowerofyba2cu3o7xandyba2cu4o8underpressure |