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Unexpected magnetic behaviour in a singlet crystal field ground state induced by Tb 4f-instability

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Zeitschrift für Physik B Condensed Matter

Abstract

The magnetic susceptibility (χ) of Th1-x Tb x alloys (with 5<x<55a/o Tb) in the range of 1 K<T<350K and the specific heat (forx=1.5a/o Tb) for 0.5<T<10 K were measured. A maximum in χ(T) was observed at a temperature which depends on concentration. The crystal field level scheme that fits the specific heat measurements shows two non-magnetic singlets as lowest levels. Such ambiguity is discussed within the framework of the 4f-Tb instability. The results are in agreement with the matrix superconductiveT c decrease. The contribution of the interconfigurational mixing on χ and the specific heat is also discussed.

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References

  1. See for example: Handbook of chemistry and physics, 64th ed., p. D-50. Boca Raton: CRC-Press

  2. Palenzona, A.: Thermod. Acta25, 252 (1978)

    Google Scholar 

  3. Slebarski, A., Wohlleben, D., Weidner, P., Röhler, J., Freimuth, A.: J. Mag. Mag. Mat.47–48, 595 (1985)

    Google Scholar 

  4. Sereni, J.G.: J. Less Common Met.86, 287 (1982)

    Google Scholar 

  5. See for example: Proceedings of the ICM 85. Rhyne, J., Cooper, B., Huber, D., Koon, N., O'Handley, R., (eds.). Amsterdam, New York: North Holland 1986

    Google Scholar 

  6. Jayasuriya, K., Campbell, S., Stewart, A., Gopal, E.: J. Mag. Mag. Mat.31–34, 1055 (1983)

    Google Scholar 

  7. Lea, K.R., Leask, M.J., Wolf, W.P.: J. Phys. Chem. Solids23, 1381 (1962)

    Google Scholar 

  8. Sereni, J.G., Nieva, G., Huber, J.G., Braun, E., Oster, F., Brück, E., Roden, B., Wohlleben, D.: J. Mag. Mag. Mat.63–64, 597 (1987)

    Google Scholar 

  9. Souletie, J., Tournier, R.: J. Low. Temp. Phys.1, 95 (1969)

    Google Scholar 

  10. Birgenau, R.J.: J. Phys. Chem. Solids33, 59 (1972)

    Google Scholar 

  11. See for example: Wittershagen, B., Wohlleben, D.: J. Mag. Mag. Mat.47–48, 79 (1985)

    Google Scholar 

  12. Guertin, R.P., Bulmann, J.B., Huber, J.G., Parks, R.D.: Physica102 B, 151 (1980)

    Google Scholar 

  13. Keller, J., Fulde, P.: J. Low Temp. Phys.4, 289 (1971)

    Google Scholar 

  14. Luengo, C.A., Cotignola, J.M., Sereni, J.G., Sweedler, A.R., Maple, M.B., Huber, J.G.: Solid State Commun.10, 459 (1972)

    Google Scholar 

  15. Rizzuto, C.: Rep. Prog. Phys.37, 147 (1974)

    Google Scholar 

  16. Davidov, D., Orbach, R., Rettori, D., Shaltiel, D., Tao, L.J., Ricks, B.: Phys. Rev. B5, 1711 (1972)

    Google Scholar 

  17. See for example: Maple, M.B.: Appl. Phys.9, 179 (1976)

    Google Scholar 

  18. Tovar, M., Arce, R.: Physica107 B, 639 (1981)

    Google Scholar 

  19. Sereni, J.G., Huber, T.E., Luengo, C.A.: Solid State Commun.29, 671 (1979)

    Google Scholar 

  20. Lawrence, J.M., Riseborough, P.S., Parks, R.D.: Rep. Prog. Phys.44 (1982) in page 24

    Google Scholar 

  21. Bates, L.F., Newmann, M.M.: Prog. Phys. Soc.72, 345 (1958)

    Google Scholar 

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This work was partially supported by the KfA-CNEA cooperation program and by the Deutsche Farschungsgemeinschaft through SFB125

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Braun, E., Bürger, A., Nieva, G. et al. Unexpected magnetic behaviour in a singlet crystal field ground state induced by Tb 4f-instability. Z. Physik B - Condensed Matter 70, 187–192 (1988). https://doi.org/10.1007/BF01318297

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  • DOI: https://doi.org/10.1007/BF01318297

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