Magnetic and structural characteristics of RCo9 + delta Si4 alloys (R=Pr or Gd, delta =0-4)
Abstract
Studies of the magnetic and structural characteristics of RCo9+δSi4 (δ=0-4), nonstoichiometric alloys, have been extended from R=La in our earlier work to R=Pr and Gd. In the present work, as the extra Co content increases, the magnetic properties M, Tc, and Hc are significantly enhanced compared to that of the stoichiometric alloys (δ=0). Using x-ray diffraction measurements, the sublattice occupancies are calculated. The extra Co atoms are found to occupy the 4a and 16L2 sites in the Ce2Ni17Si9 unit cell. They partially replace R and Si in these sites.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- April 1997
- DOI:
- 10.1063/1.365148
- Bibcode:
- 1997JAP....81.5138H