Results of dc magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on a well-annealed polycrystalline (Formula presented) sample are reported. The temperature dependence of the dc magnetization exhibits a cusp at a characteristic temperature (Formula presented) that strongly depends on the applied magnetic field. Below (Formula presented) the magnetic relaxation measurements reveal a decay of the isothermal remanent magnetization vs time that is drastically slower than above (Formula presented) No anomalies around (Formula presented) are observed in the specific heat and electrical resistivity data, which rules out the existence of usual long-range spatial magnetic order. These results can be considered as clear evidence for the formation of a spin-glass state in (Formula presented) with a freezing temperature (Formula presented) The necessary randomness in the U-U magnetic exchange interactions arises from a statistical distribution of Pd and Si atoms on a crystallographic site of the (Formula presented) crystal lattice.
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 1998 Jan 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics