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.
Similar content being viewed by others
References
See for example: Handbook of chemistry and physics, 64th ed., p. D-50. Boca Raton: CRC-Press
Palenzona, A.: Thermod. Acta25, 252 (1978)
Slebarski, A., Wohlleben, D., Weidner, P., Röhler, J., Freimuth, A.: J. Mag. Mag. Mat.47–48, 595 (1985)
Sereni, J.G.: J. Less Common Met.86, 287 (1982)
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
Jayasuriya, K., Campbell, S., Stewart, A., Gopal, E.: J. Mag. Mag. Mat.31–34, 1055 (1983)
Lea, K.R., Leask, M.J., Wolf, W.P.: J. Phys. Chem. Solids23, 1381 (1962)
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)
Souletie, J., Tournier, R.: J. Low. Temp. Phys.1, 95 (1969)
Birgenau, R.J.: J. Phys. Chem. Solids33, 59 (1972)
See for example: Wittershagen, B., Wohlleben, D.: J. Mag. Mag. Mat.47–48, 79 (1985)
Guertin, R.P., Bulmann, J.B., Huber, J.G., Parks, R.D.: Physica102 B, 151 (1980)
Keller, J., Fulde, P.: J. Low Temp. Phys.4, 289 (1971)
Luengo, C.A., Cotignola, J.M., Sereni, J.G., Sweedler, A.R., Maple, M.B., Huber, J.G.: Solid State Commun.10, 459 (1972)
Rizzuto, C.: Rep. Prog. Phys.37, 147 (1974)
Davidov, D., Orbach, R., Rettori, D., Shaltiel, D., Tao, L.J., Ricks, B.: Phys. Rev. B5, 1711 (1972)
See for example: Maple, M.B.: Appl. Phys.9, 179 (1976)
Tovar, M., Arce, R.: Physica107 B, 639 (1981)
Sereni, J.G., Huber, T.E., Luengo, C.A.: Solid State Commun.29, 671 (1979)
Lawrence, J.M., Riseborough, P.S., Parks, R.D.: Rep. Prog. Phys.44 (1982) in page 24
Bates, L.F., Newmann, M.M.: Prog. Phys. Soc.72, 345 (1958)
Author information
Authors and Affiliations
Additional information
This work was partially supported by the KfA-CNEA cooperation program and by the Deutsche Farschungsgemeinschaft through SFB125
Rights and permissions
About this article
Cite this article
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
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01318297