Asymmetric magnetic dots: A way to control magnetic properties

Details Asymmetric magnetic dots: A way to control magnetic properties Asymmetric magnetic dots: A way to control magnetic properties

2011-06-07

arxiv.org/abs/1106.1403v1

Journal of Applied Physics 109 (7), 073907 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures

Scientific paper

10.1063/1.3561483

We have used Monte Carlo simulations to investigate the magnetic properties of asymmetric dots as a function of their geometry. The asymmetry of round dots is produced by cutting off a fraction of the dot and is characterized by an asymmetry parameter $\alpha$. This shape asymmetry has interesting effects on the coercivity ($H_{c}$), remanence ($M_{r}$), and barrier for vortex and C- state formation. The dependences of $H_{c}$ and $M_{r}$ are non monotonic as a function of $\alpha$ with a well defined minima in these parameters. The vortex enters the most asymmetric part and exits through the symmetric portion of the dot. With increasing $\alpha $ the vortex formation starts with a C-state which persists for longer fields and the barrier for vortex exit diminishes with increasing asymmetry, thus providing control over the magnetic chirality. This implies interesting, naively-unexpected, magnetic behavior as a function of geometry and magnetic field.

Affiliated with

Also associated with

No associations

Rating

Asymmetric magnetic dots: A way to control magnetic properties 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 Asymmetric magnetic dots: A way to control magnetic properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asymmetric magnetic dots: A way to control magnetic properties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27303