Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-10-04
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
9 two-column pages, 6 figures. This replacement has a new title and abstract, and one additional figure
Scientific paper
Measurements of the magnetic susceptibility of Fe/W(110) films with thickness in the range of 1.6 to 2.4 ML Fe, show that in addition to the large response along the easy axis associated with the Curie transition, there is a much smaller, paramagnetic hard axis response that is not consistent with the 2D anisotropic Heisenberg model used to describe homogeneous in-plane ferromagnets with uniaxial anisotropy. The shape, amplitude, and peak temperature of the hard axis susceptibility, as well as its dependence upon layer completion close to 2.0 ML, indicate that inhomogeneities in the films create a system of mixed anisotropy. A likely candidate for inhomogeneities that are magnetically relevant in the critical region are the closed lines of step edges associated with the incomplete layers. According to the Harris criterion, the existence of magnetically relevant inhomogeneities may alter the critical properties of the films from those of a 2D Ising model. Experiments in the recent literature are discussed in this context.
D'Ortenzio R.
Fritsch K.
Venus D.
No associations
LandOfFree
Observation of mixed anisotropy in the critical susceptibility of an ultrathin magnetic film does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of mixed anisotropy in the critical susceptibility of an ultrathin magnetic film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of mixed anisotropy in the critical susceptibility of an ultrathin magnetic film will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-275130