DocumentCode :
1052877
Title :
A measuring system for analyzing AC dynamic domain wall motions in bubble materials
Author :
Argyle, Bernell ; Halperin, Arnold
Author_Institution :
IBM Thomas J. Watson Research Center, Yorktown Heights, N.Y.
Volume :
9
Issue :
3
fYear :
1973
fDate :
9/1/1973 12:00:00 AM
Firstpage :
238
Lastpage :
242
Abstract :
A measuring system is described which is capable of rapidly analyzing dynamic ac domain wall displacements monitored by Faraday photometric signals from bubble materials placed in a polarizing microscope. An audio modulated rf drive field used in conjunction with signal processing electronics produces a signal proportional to the derivative 
of the displacement amplitude with respect to the peak drive field. This signal is the basis of plots produced automatically of versus frequency (10 kHz - 32 MHz), versus hp , and 
versus hp . Data obtained on an epitaxial garnet film of Eu0.7 Y2.3 Fe3.85 Ga1.15 O12 are presented showing domain wall resonances and nonlinearities between wall velocity and drive field.
of the displacement amplitude with respect to the peak drive field. This signal is the basis of plots produced automatically of versus frequency (10 kHz - 32 MHz), versus h versus hKeywords :
Magnetic bubble domains; Magnetic domain walls; Magnetic measurements; Amplitude modulation; Displacement measurement; Drives; Microscopy; Monitoring; Motion analysis; Photometry; Polarization; Signal analysis; Signal processing;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1973.1067648
Filename :
1067648
Link To Document :
