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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Akahama Y, Endo S, Noguchi S and Okuda K 1987Jpn. J. Appl. Phys. 26 L871
Driessen A, Griessen R, Koeman N, Salomons E, Bronwer R, DeGrost D G, Heeck K, Hemmes H and Rector J 1987Phys. Rev. B36 5602
Duan H, Lu L, Wang X, Lin S and Zhang D 1987Solid State Commun.64 489
Fietz W H, Dietrich M R and Ecke J 1987Z. Phys. B69 17
Kanatzidis M G, Marks T J, Marcy H O, McCarthy W J and Kannewurf C R 1988Solid State Commun.65 1333
Kaneko J, Yoshida H, Abe S, Morita H, Noto K and Fujimori H 1987Jpn. J. Appl. Phys. 26 L1374
Kutty A P G and Vaidya S N 1988High Temp-High Pressures 20 475
Lusnikov A, Miller L L, McCallum R W and Mitra A 1989J. Appl. Phys. 65 3136
Murugaraj P, Maier J and Rabenau A 1988Solid State Commun.66 735
Okai B, Takahashi K and Ohta M 1987Jpn. J. Appl. Phys. 26 L820
Omari M, Tomiyoshi S, Yamaguchi H, Kamiyama T and Fukuda T 1987Jpn. J. Appl. Phys. 26 L1421
Robinson Qet al 1987Adv. Ceram. Mater. 2 380
Shubha V and Ramesh T G 1986High Temp-High Pressures 18 311
Singh A K and Kennedy G C 1974J. Appl. Phys. 45 4686
Singh A K and Ramani G 1978Rev. Sci. Instrum. 49 1324
Singh A K, Mohan M and Divakar C 1983J. Appl. Phys. 54 5721
Wang Z Z and Ong N P 1988Phys. Rev. B38 7160
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Ramasesha, S.K., Singh, A.K. Thermoelectric power of YBa2Cu3O7−δ under pressure up to 9 GPa. Bull. Mater. Sci. 14, 767–770 (1991). https://doi.org/10.1007/BF02744723
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DOI: https://doi.org/10.1007/BF02744723