DocumentCode :
3603404
Title :
Enhanced Nucleation of Magnetic Vortex in Geometrically Confined Nanodots
Author :
Mei Bi ; Xin Wang ; Haipeng Lu ; Li Zhang ; Longjiang Deng ; Jianliang Xie
Author_Institution :
Nat. Eng. Res. Center of Electromagn. Radiat. Control Mater., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Volume :
51
Issue :
11
fYear :
2015
Firstpage :
1
Lastpage :
4
Abstract :
Due to its combination of controlled chirality and polarity, the magnetic vortices have attracted increasingly scientific efforts in application as multibit memory cells. Here, we show the modeled vortex-state elements in soft ferromagnetic nanodots with smaller critical dimensions by micromagnetic numerical calculations. By applying in-plane rotating magnetic field of sufficient strength and frequency, the vortices polarity can be switched in a unidirectional way. Compared with conventional disks, the packed noninteracting nanodots assembled by such method possess the advantage of high areal density, which reveals its potential application in nonvolatility random access memory devices.
Keywords :
ferromagnetic materials; magnetic switching; micromagnetics; nanofabrication; nanopatterning; nanostructured materials; nucleation; soft magnetic materials; conventional disks; enhanced nucleation; geometrically confined nanodots; high areal density; in-plane rotating magnetic field; magnetic vortex; micromagnetic numerical calculations; multibit memory cells; noninteracting nanodots; nonvolatility random access memory devices; soft ferromagnetic nanodots; vortex-state elements; Magnetic confinement; Magnetic cores; Magnetic domains; Magnetic hysteresis; Magnetic switching; Magnetostatics; Switches; Magnetic nanodots; magnetic nanodots; micromagnetic simulation; nucleation; switching; vortex;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2015.2450502
Filename :
7138620
Link To Document :
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