Abstract
We show that the magnetic dipolar energy of antiparallel dipoles in the surface layers contributes to the intrinsic perpendicular anisotropy in amorphous rare-earth transition-metal films. The volume anisotropy energy density Ku of this contribution depends inversely on the thickness of the film. For an amorphous GdCo film with a thickness of 1000 the calculated Ku is on the order of 103 104 ergs cm3. Dependence of Ku on temperature and atomic concentration is also calculated.
Original language | English (US) |
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Pages (from-to) | 1086-1089 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 66 |
Issue number | 8 |
DOIs | |
State | Published - 1991 |
ASJC Scopus subject areas
- General Physics and Astronomy