Thermoelectric power of YBa2Cu3O7?δ
under pressure up to 9 GPa |
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Authors: | Sheela K Ramasesha A K Singh |
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Affiliation: | (1) Materials Science Division, National Aeronautical Laboratory, 560 017 Bangalore, India |
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Abstract: | Thermoelectric power (TEP) of two YBa2Cu3O7−δ
compounds (with δ=0·17 and 0·21) was measured as a function of quasi-hydrostatic pressure up to 9GPa at 300K on samples with
low porosity. In both cases TEP decreases with increasing pressure, at a rate ∼ 0·8 μVK−1/GPa. The data obtained under hydrostatic pressure up to 3 GPa are in good agreement with those under quasi-hydrostatic pressure.
The TEP of both compositions is found to decrease linearly at a rate 0·8 μVK−1/GPa above 1·5 GPa. |
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Keywords: | Thermoelectric power quasi-hydrostatic pressure hydrostatic pressure |
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