ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00114370
