Title :
A high-frequency Kerr-effect microscope for bubble devices
Author :
Harrison, Colin G. ; Huswitzer, R.B. ; Voge, James B.
Author_Institution :
IBM General Products Div., San Jose, CA, USA
Abstract :
A Kerr-effect microscope is described which has been assembled specifically for studies of the dynamic magnetization of the Permalloy elements of magnetic-bubble memory devices at frequencies up to 300 kHz with an illumination spot size of approximately 2 μm. Procedures are described for the setting up and alignment of the microscope and for the calibration of the rotating field.
Keywords :
Kerr magneto-optical effect; Permalloy; calibration; magnetic bubble memories; magnetic variables measurement; magnetisation; microscopes; 300 kHz; Permalloy; alignment; calibration; dynamic magnetization; high frequency Kerr effect microscope; magnetic-bubble memory devices; setting up; Biomedical optical imaging; Coils; Films; Magnetic force microscopy; Magnetization; Microscopy; Optical sensors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1981.6312378
