Magnetic anisotropy in evaporated amorphous films of the ternary system Gd/sub x/(Fe/sub 1-y/)Co/sub y/)/sub 1-x/
Magnetic anisotropy has been determined for evaporated amorphous films of Gd/sub x/(Fe/sub 1-y/Co/sub y/)/sub 1-x/ with 0.08<0.35 and 0.06<0.62. The anisotropy data were fitted with a dipolar equation of the form K/sub u/=summation C/sub i//sub j/M/sub i/M/sub j/ in which C/sub i//sub j/ is a dipolar coupling constant for the i-j pair and M/sub i/ and M/sub j/ are sublattice magnetizations. The model satisfactorily described the experimental data for all films that were amorphous. The anisotropy could be attributed to pair ordering in which rare earth--transition metal pairs (Gd-Co) and Gd-Fe) contribute to in-plane anisotropy and rare earth--rare earth (Gd-Gd) and transition metal--transition metal (Fe-Fe, Co-Co, and Fe-Co) pairs contribute to perpendicular anisotropy. The Fe-Co pairs were the strongest contributor to perpendicular anisotropy with C/sub Fehyphen/=2.809, C/sub Fehyphen/=0.992, and C/sub Cohyphen/=0.660. (AIP)
- Research Organization:
- IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598
- OSTI ID:
- 7133874
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 48:1
- Country of Publication:
- United States
- Language:
- English
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