Abstract
The spin-polarized electron momentum distributions in the Cr-based chalcogenide spinels Fe1-xCuxCr2S4 (x=0.0,0.5,1.0) have been measured using a magnetic Compton scattering technique at T=10 K. The experimental magnetic Compton profiles have been compared with the results from electronic structure calculations performed using the full potential linearized augmented plane-wave method. The theoretical analysis includes a decomposition of the various orbital and atomic contributions. For x=0.0 and 0.5 sample compositions, the results show that the magnetic moments of the tetrahedrally coordinated Fe2+ (for x=0.0) and Fe3+ (for x=0.5) with spin moments of 3.66mu(B) (for x=0.0) per formula unit (FU-1) and 1.6mu(B) FU-1 (for x=0.5), are aligned antiparallel to those of the octahedrally coordinated Cr3+ with spin moments of 5.0mu(B) FU-1 (for x=0.0) and 4.82mu(B) FU-1 (for x=0.5). In the ferromagnetic system for x=1.0, the Cr moment is found to be 5.28mu(B) FU-1.
Original language | English |
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Pages (from-to) | 100407 |
Number of pages | 1 |
Journal | Physical Review B |
Volume | 66 |
Issue number | 10 |
Early online date | 1 Sept 2002 |
DOIs | |
Publication status | Published - 1 Sept 2002 |