The magnetic ordering temperatures of the primitive tetragonal rare earth (RE) rhodium boride compounds exhibit a peak at DyRh4B4, rather than GdRh4B4 as predicted from ordering via the indirect RKKY exchange interaction. This deviation is analyzed in terms of the depression of the superconducting transition temperature of LuRh4B4 by dilute amounts of RE impurity ions and the magnetic heat capacities of the RERh4B4 compounds for RE = Gd, Tb, Dy, and Ho. The strength of anisotropic crystalline electric field forces, as inferred from magnetic entropy considerations, may be the origin of the anomalous magnetic ordering temperatures. In addition, the depression of the superconducting transition temperatures of ErRh4B4 and TmRh4B4 from that of LuRh4B4 is shown to arise primarily from elastic exchange scattering of the conduction electrons by the magnetic RE ions.
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B. T. Matthias, E. Corenzwit, J. M. Vandenberg, and H. Barz, Proc. Nat. Acad. Sci. USA 74, 1334 (1977).
W. A. Fertig, D. C. Johnston, L. E. DeLong, R. W. McCallum, M. B. Maple, and B. T. Matthias, Phys. Rev. Lett. 38, 987 (1977).
D. E. Moncton, D. B. McWhan, J. Eckert, G. Shirane, and W. Thomlinson, Phys. Rev. Lett. 39, 1164 (1977).
M. B. Maple, H. C. Hamaker, D. C. Johnston, H. B. MacKay, and L. D. Woolf, J. Less-Common Metals 62, 251 (1978).
H. R. Ott, L. D. Woolf, M. B. Maple, and D. C. Johnston, J. Low. Temp. Phys. 39, 383 (1980).
L. D. Woolf, D. C. Johnston, H. B. MacKay, R. W. McCallum, and M. B. Maple, J. Low Temp. Phys. 35, 651 (1979).
A. Abrikosov and L. P. Gor'kov, Sov. Phys.—JETP 12, 1243 (1961).
M. B. Maple, L. E. DeLong, and B. C. Sales, in Handbook on the Physics and Chemistry of Rare Earths, K. A. Gschneider Jr. and L. Eyring, eds. (North-Holland, 1978), p. 797, and references therein.
T. Jarlborg, A. J. Freeman, and T. J. Watson-Yang, Phys. Rev. Lett. 39, 1032 (1977).
S. Maekawa and M. Tachiki, Phys. Rev. B 18, 4688 (1978).
K. Kumagi, Y. Inoue, and K. Asayama, J. Phys. Soc. Japan 47, 1363 (1979).
A. Arrott, in Magnetism, G. T. Rado and H. Suhl, eds. (Academic Press, New York, 1966), Vol. 11B, p. 409.
D. C. Johnston, W. A. Fertig, M. B. Maple, and B. T. Matthias, Solid State Commun. 26, 141 (1978).
H. B. MacKay, L. D. Woolf, M. B. Maple, and D. C. Johnston, Phys. Rev. Lett. 42, 918 (1979).
H. A. Mook, W. C. Koehler, M. B. Maple, Z. Fisk, and D. C. Johnston, Superconductivity in d- and f-Band Metals, H. Suhl and M. B. Maple, eds. (Academic Press, New York, 1980), p. 427.
S. Maekawa and C. Y. Huang, in Crystalline Electric Field and Structural Effects in f-Electron Systems, J. E. Crow, R. P. Guertin, and T. W. Mihalisin, eds. (Plenum, New York, 1980).
P. Fulde, L. L. Hirst, and A. Luther, Z. Physik 230, 155 (1970).
G. H. Lander, S. K. Sinha, and F. Y. Fradin, J. Appl. Phys. 50, 1990 (1979).
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This research was supported by the U.S. Department of Energy under Contract EY-76-S-03-0034-PA227-3 (HBM, LDW, MBM) and by the National Science Foundation under Grant NSF/DMR77-08469 (DCJ).
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MacKay, H.B., Woolf, L.D., Maple, M.B. et al. Ferromagnetism in the RERh4B4 compounds. J Low Temp Phys 41, 639–651 (1980). https://doi.org/10.1007/BF00114370
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DOI: https://doi.org/10.1007/BF00114370