DocumentCode :
989471
Title :
Computer simulation of the operation of a magnetic bubble domain propagation circuit modeled after a current-access device
Author :
Hayashi, Nobuo
Author_Institution :
University of Electro-Communications, Tokyo, Japan.
Volume :
18
Issue :
4
fYear :
1982
fDate :
7/1/1982 12:00:00 AM
Firstpage :
933
Lastpage :
940
Abstract :
The operation of a bubble-domain straight-line propagation circuit has been simulated successfully. This simulation has been achieved by our approximating the motion of an s = 0 frozen-azimuth bubble placed under a drive field ![H_{Z}(X, Y, T)= -H_{p} \\cdot \\cos [2\\pi(X/R_{X} - n(T)/4)] \\cdot \\exp [-(Y/R_{Y})^{2}]](/images/tex/9099.gif)
. The simulation has been generated from a previously developed numerical scheme to simulate the motion of a bubble, whose domain shape and magnetization structure along its domain wall were variable. The drive field has been modeled after a dual conductor-sheet, current-access propagation structure, which has a bit period RX and a transverse width on the order of 
. The entire field contour has been advanced stepwise in the positive 
direction by an increase of the integer 
, which represents the drive-phase number. The bubble motion has been observed during the first six drive phases to produce operating margin diagrams for drive frequencies of 250 KHz, 796 KHz and 1 MHz. The method of calculation and the results of the simulation are given.
. The simulation has been generated from a previously developed numerical scheme to simulate the motion of a bubble, whose domain shape and magnetization structure along its domain wall were variable. The drive field has been modeled after a dual conductor-sheet, current-access propagation structure, which has a bit period R . The entire field contour has been advanced stepwise in the positive direction by an increase of the integer , which represents the drive-phase number. The bubble motion has been observed during the first six drive phases to produce operating margin diagrams for drive frequencies of 250 KHz, 796 KHz and 1 MHz. The method of calculation and the results of the simulation are given.Keywords :
Magnetic bubble circuits; Circuit simulation; Computational modeling; Computer simulation; Frequency; Magnetic circuits; Magnetic devices; Magnetic domains; Magnetization; Numerical simulation; Shape;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1982.1061952
Filename :
1061952
Link To Document :
