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Bulletin of Materials Science

, Volume 14, Issue 3, pp 767–770 | Cite as

Thermoelectric power of YBa2Cu3O7−δ under pressure up to 9 GPa

  • Sheela K Ramasesha
  • A K Singh
International Conference On Superconductivity—II

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.

Keywords

Thermoelectric power quasi-hydrostatic pressure hydrostatic pressure 

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References

  1. Akahama Y, Endo S, Noguchi S and Okuda K 1987Jpn. J. Appl. Phys. 26 L871Google Scholar
  2. Driessen A, Griessen R, Koeman N, Salomons E, Bronwer R, DeGrost D G, Heeck K, Hemmes H and Rector J 1987Phys. Rev. B36 5602Google Scholar
  3. Duan H, Lu L, Wang X, Lin S and Zhang D 1987Solid State Commun.64 489CrossRefGoogle Scholar
  4. Fietz W H, Dietrich M R and Ecke J 1987Z. Phys. B69 17CrossRefGoogle Scholar
  5. Kanatzidis M G, Marks T J, Marcy H O, McCarthy W J and Kannewurf C R 1988Solid State Commun.65 1333CrossRefGoogle Scholar
  6. Kaneko J, Yoshida H, Abe S, Morita H, Noto K and Fujimori H 1987Jpn. J. Appl. Phys. 26 L1374Google Scholar
  7. Kutty A P G and Vaidya S N 1988High Temp-High Pressures 20 475Google Scholar
  8. Lusnikov A, Miller L L, McCallum R W and Mitra A 1989J. Appl. Phys. 65 3136CrossRefGoogle Scholar
  9. Murugaraj P, Maier J and Rabenau A 1988Solid State Commun.66 735CrossRefGoogle Scholar
  10. Okai B, Takahashi K and Ohta M 1987Jpn. J. Appl. Phys. 26 L820Google Scholar
  11. Omari M, Tomiyoshi S, Yamaguchi H, Kamiyama T and Fukuda T 1987Jpn. J. Appl. Phys. 26 L1421Google Scholar
  12. Robinson Qet al 1987Adv. Ceram. Mater. 2 380Google Scholar
  13. Shubha V and Ramesh T G 1986High Temp-High Pressures 18 311Google Scholar
  14. Singh A K and Kennedy G C 1974J. Appl. Phys. 45 4686CrossRefGoogle Scholar
  15. Singh A K and Ramani G 1978Rev. Sci. Instrum. 49 1324CrossRefGoogle Scholar
  16. Singh A K, Mohan M and Divakar C 1983J. Appl. Phys. 54 5721CrossRefGoogle Scholar
  17. Wang Z Z and Ong N P 1988Phys. Rev. B38 7160Google Scholar

Copyright information

© Indian Academy of Sciences 1991

Authors and Affiliations

  • Sheela K Ramasesha
    • 1
  • A K Singh
    • 1
  1. 1.Materials Science DivisionNational Aeronautical LaboratoryBangaloreIndia

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