Nanometric Co-10at% Cr alloy-cluster assembled films have been produced by a plasma-gas-condensation method, and examined by transmission electron microscopy and the magneto-optical Kerr effect. With increasing the average weight thickness t we found that the Co-Cr clusters coalesce to form a large network. This formation took place more rapidly among clusters with an average cluster size of d = 2.4 nm than with those of d = 4.6 nm. The isolated Co-Cr clusters are superparamagnetic when t<2 nm. With increasing t, the transition from superparamagnet to ferromagnet occurs more rapidly in the system with d = 2.4 nm than in that with d = 4.6 nm, in accordance with their morphological characteristics.
|Number of pages||9|
|Journal||Physica Status Solidi (A) Applied Research|
|Publication status||Published - 1999 Apr 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics