Abstract
The electrical resistance and absolute thermoelectric power (TEP) have been measured for GdB6 and DyB6 in the temperature range 2–30 K. The compounds GdB6 and DyB6 order antiferromagnetically atT N ≃ 15.2 and 20.3 K, respectively. Above the Néel temperature the resistivity has a small contribution that is linear inT due to electron-phonon scattering, whereas in the same temperature range the spin-disorder TEP (S spd) has been evaluated and found to be linear inT. A divergence in the temperature derivative of resistance and TEP has been found atT N that is consistent with the present theories. There is evidence of a low-temperature phase appearing at ∼ 7 K in the resistivity and the TEP data of GdB6. A minimum in the TEP is found in these compounds below ∼ 6 K, which is associated mainly with phonon drag and possibly a magnon contribution. A broad peak in the TEP of DyB6 around ∼ 16 K is thought to be due to crystalline electric field effects.
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T. Kasuya, K. Takegahara, Y. Aoki, K. Hanzawa, M. Kasaya, S. Kunii, T. Fujita, N. Sato, H. Kimura, T. Komatsubara, T. Furuno, and J. Rossat-Mignod, inProceeding of the International Conference on Valence Fluctuations in Solids, L. M. Falicov, W. Hanke and M. B. Maple, eds. (North-Holland, Amsterdam, 1981), p. 215.
B. T. Matthias, T. H. Geballe, K. Andres, E. Corenzwit, G. W. Hull, and J. P. Maita,Science 159, 530 (1968); T. H. Geballe, B. T. Matthias, K. Andres, J. P. Maita, A. S. Cooper, and E. Corenzwit,Science 160, 1443 (1968).
Y. Ishizawa, T. Tanaka, E. Banni, and S. Kawai,J. Phys. Soc. Jpn. 42, 112 (1977); A. Hasegawa and A. Yanese,J. Phys. F: Metal Phys. 7, 1245 (1977).
V. I. Matkovich, ed.,Boron and Refractory Borides (Springer Berlin, 1977), Chapters III, IX, and XV.
H. Hacker, Jr., Y. Shimada, and K. S. Chung,Phys. Stat. Sol. (a) 4, 459 (1971).
B. R. Coles, T. Cole, J. Lambe, and N. Laurance,Proc. Phys. Soc. Lond. 79, 84 (1962).
Yu. B. Paderno, S. Pokrzywnicki, and B. Stalinski,Phys. Stat. Sol. 24, K73 (1967).
Z. Fisk, R. H. Taylor, and B. R. Coles,J. Phys. C: Solid State Phys. 4, L292 (1071).
E. F. Westrum, Jr., inProgress in the Science and Technology of the Rare Earths, Vol. 3 (Pergamon, Oxford, 1968), p. 459.
N. Ali and S. B. Woods,J. Appl. Phys. 53, 7905 (1982).
N. Ali and S. B. Woods,Solid State Commun. 46, 33 (1983).
N. Rivier and A. E. Mensah,Physics 91B, 85 (1977).
M. E. Fisher and J. S. Langer,Phys. Rev. Lett. 20, 665 (1968); T, G. Richard and D. J. W. Geldart,Phys. Rev. B 15, 1502 (1977); D. J. W. Geldart and T. G. Richard,Phys. Rev. B 12, 5175 (1975); S. Alexander, J. S. Helman, and I. Balberg,Phys. Rev. B 13, 304 (1976).
W. J. Nellis and S. Legvold,Phys. Rev. 180, 581 (1969); G. T. Meadon, K. V. Rao, and K. T. Lee,Phys. Rev. Lett. 25, 359 (1970); J. B. Sousa, M. R. Chaves, M. E. Barga, M. M. Reis, M. F. Pinheiro, and M. Crisan,J. Phys. F.: Metal Phys. 5, L155 (1975); H. Taub and S. J. Williamson,Solid State Commun. 13, 1021 (1973); R. L. Singh and S. B. Woods,Phys. Rev. B 19, 1555 (1979).
R. L. Singh and S. B. Woods,J. Low Temp. Phys. 42, 241 (1981).
H. Nozaki, T. Tanaka, and Y. Ishizawa,J. Phys. C: Solid State Phys. 13, 2751 (1980).
A. M. Guénault,J. Phys. F: Metal Phys. 1, 373 (1971); M. Bailyn,Phys. Rev. 157, 480 (1967).
M. Bailyn,Phys. Rev. 126, 2040 (1962).
M. Ausloos,Solid State Commun. 21, 373 (1977), and references therein.
I. Peschel and P. Fulde,Z. Phys. 238, 99 (1970); J. Sierro, E. Bucher, L. D. Longinotti, H. Takayama, and P. Fulde,Solid State Commun. 17, 79 (1975).
E. Umlauf, G. Pepperl, and A. Meyer,Phys. Rev. Lett. 30, 1173 (1973).
H. Takayama and P. Fulde,Z. Phys. B 20, 81 (1975).
E. Gratz and M. J. Zuckermann,J. Magn. Magn. Mat. 29, 181 (1982).
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Ali, N., Woods, S.B. Transport properties of GdB6 and DyB6 . J Low Temp Phys 56, 575–584 (1984). https://doi.org/10.1007/BF00681812
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DOI: https://doi.org/10.1007/BF00681812