[Zurück]

W. Scholz, K.Yu. Guslienko, V. Novosad, D. Süss, T. Schrefl, R.W. Chantrell, J. Fidler:
"Transition from single-domain to vortex state in soft magnetic cylindrical nanodots";
Journal of Magnetism and Magnetic Materials, 266 (2003), S. 155 - 163.

Transition from single-domain to vortex state in soft magnetic cylindrical nanodots

W. ScholzCorresponding Author Contact Information, E-mail The Corresponding Author, E-mail The Corresponding Author, a, K. Yu. GuslienkoE-mail The Corresponding Author, b, V. Novosadc, D. Suessa, T. Schrefla, R. W. Chantrellb and J. Fidlera

a Institute of Applied and Technical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/138, A-1040, Vienna, Austria
b Seagate Research, 1251, Waterfront Place, PA 15222-4215, USA
c Argonne National Laboratory, Materials Science Division, 9700 S. Cass Avenue, Argonne, IL 60439, USA

Received 30 October 2002; revised 12 February 2003. Available online 25 June 2003.


Abstract

We have investigated the magnetic properties of submicron soft magnetic cylindrical nanodots using an analytical model as well as three dimensional numerical finite element simulations. A detailed comparison of the magnetic vortex state shows the differences between these two models. It appears that the magnetic surface charges play a crucial role in the equilibrium magnetization distribution especially for shifted vortices. Finally, the magnetic phase diagram for soft magnetic particles with varying aspect ratio is presented.

Author Keywords: Magnetic nanodot; Magnetic vortex; Micromagnetics

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04970154

doi:10.1016/S0304-8853(03)00466-9