Abstract
The magnetic and electrical properties of amorphous alloys have been measured between 4.2 and 300 K. Alloys with and order ferromagnetically. High-field magnetization measurements show saturation in moderate fields suggesting a relatively high value of magnetic anisotropy which was estimated to be erg/. The magnetization at low temperatures follows a law leading to a spin-wave stiffness coefficient meV . The , alloy behaves like a "cluster glass" with a cluster ordering temperature around 20 K. Resistivity measurements show minima at low temperatures which can be explained with a modified Kondo mechanism. The resistivity maximum which appears around the cluster ordering temperature in is associated with a spin freeze-out of the Kondo effect due to local moments on Cr atoms.
- Received 30 June 1980
DOI:https://doi.org/10.1103/PhysRevB.24.5318
©1981 American Physical Society