Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9834087 | Journal of Magnetism and Magnetic Materials | 2005 | 9 Pages |
Abstract
The magnetic ordering in ultrathin Co films on Cu(0Â 0Â 1) has been investigated via the polarization of light emitted after capture of spin-polarized electrons into excited atomic terms during grazing He scattering. A strong increase in the Curie temperature and the remanent spin polarization has been observed at a critical Co thickness tCocrâ1.7ML. In agreement with a recent study on the same heteroepitaxial system, this behavior is attributed to the percolation of Co islands. For growth at an elevated temperature of 410Â K, hysteresis loops reveal a strong increase in the irreversibility field at which the loop closes. This behavior is explained by an inhomogeneous distribution of growth-induced local magnetic anisotropies which make a complete reversal of the magnetization more difficult.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
M. Gruyters, T. Bernhard, H. Winter,