DocumentCode
955978
Title
Pulse magnetization measurements in ferrofluids
Author
Bogardus, E.H. ; Scranton, R. ; Thompson, D.A.
Author_Institution
IBM Thomas J. Watson Research Center, Yorktown Heights, New York
Volume
11
Issue
5
fYear
1975
fDate
9/1/1975 12:00:00 AM
Firstpage
1364
Lastpage
1366
Abstract
A pulsed-field (1 μ sec to 3 m sec) inductive magnetometer has been constructed that measures the magnetic moment of a ferrofluid as a function of time. After the applied field is removed, the magnetization is characterized by a fast decay (< 1 μ sec) and a gradual decay that can be as long as 4 msec. The fast component of magnetization varies from about 50% to nearly 100% of the total and we conclude it is due to magnetization processes within the particle. The slow component of magnetization is believed to be due to particle rotation and can be related to particle size through a model developed by Janak.
Keywords
Magnetic liquids; Magnetometers; Pulse measurement; Coils; Magnetic field measurement; Magnetic levitation; Magnetic moments; Magnetic properties; Magnetization processes; Magnetometers; Oscilloscopes; Pulse measurements; Time measurement;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1975.1058798
Filename
1058798
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