T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy

Details T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy

2010-08-07

arxiv.org/abs/1008.1353v1

Journal of Magnetism and Magnetic Materials 322, 3889-3894 (2010)

Physics

Condensed Matter

Disordered Systems and Neural Networks

7 pages, 4 figures. Short version of arXiv:0907.5153, accepted for publication in JMMM (2010)

Scientific paper

10.1016/j.jmmm.2010.08.014

We present the complete zero temperature phase diagram of a model for ultrathin films with perpendicular anisotropy. The whole parameter space of relevant coupling constants is studied in first order anisotropy approximation. Because the ground state is known to be formed by perpendicular stripes separated by Bloch walls, a standard variational approach is used, complemented with specially designed Monte Carlo simulations. We can distinguish four regimes according to the different nature of striped domains: a high anisotropy Ising regime with sharp domain walls, a saturated stripe regime with thicker walls inside which an in-plane component of the magnetization develops, a narrow canted-like regime, characterized by a sinusoidal variation of both the in-plane and the out of plane magnetization components, which upon further decrease of the anisotropy leads to an in-plane ferromagnetic state via a spin reorientation transition (SRT). The nature of domains and walls are described in some detail together with the variation of domain width with anisotropy, for any value of exchange and dipolar interactions. Our results, although strictly valid at $T=0$, can be valuable for interpreting data on the evolution of domain width at finite temperature, a still largely open problem.

Affiliated with

Also associated with

No associations

Rating

T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy 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 T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and T=0 phase diagram and nature of domains in ultrathin ferromagnetic films with perpendicular anisotropy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-593867