Condensed Matter Physics, 2014, vol. 17, No. 3, p. 33701:110
DOI:10.5488/CMP.17.33701
Title:
Selforganization of topological defects for a triangularlattice magnetic dots array subject to a perpendicular magnetic field
Author(s):

R.S. Khymyn
( Oakland University, 48309 Rochester Hills, MI, USA )
,


V.E. Kireev
( Institute of Magnetism, 03142 Kiev, Ukraine )
,


B.O. Ivanov
( Institute of Magnetism, 03142 Kiev, Ukraine )

The regular array of magnetic particles (magnetic dots) of the form of a twodimensional triangular lattice in the presence of external magnetic field demonstrates complicated magnetic structures. The magnetic symmetry of the ground state for such a system is lower than that for the underlying lattice. Long range dipoledipole interaction leads to a specific antiferromagnetic order in small fields, whereas a set of linear topological defects appears with the growth of the magnetic field. Selforganization of such defects determines the magnetization process for a system within a wide range of external magnetic fields.
Key words:
magnetic dot, topological defect
PACS:
75.10.Hk, 75.50.Tt, 75.30.Kz
