Title :
Strength measurement of ferrites for video heads
Author :
Ogihara, Hirotomo ; Kawamoto, Sumio ; Kunimoto, Shinji ; Ogihara, Hiroyuki ; Kawamoto, Shota ; Kunimoto, S.
Author_Institution :
Shiba Electric Company, Ltd., Tokyo, Japan
fDate :
9/1/1972 12:00:00 AM
Abstract :
To measure the strength of ferrites for video heads of small-size video tape recorders, deflection, crack, and scratch tests are performed. The breaking point of the ferrites is approximately 1/10 to 1/8 of that of Alfesil. As to the single crystal ferrites, the strength reduces about 20-25% when a tension is applied to the
Keywords :
Video recording; Electromagnetic measurements; Ferrites; Grain boundaries; Inorganic materials; Machining; Magnetic heads; Performance evaluation; Stress; Surface cracks; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1972.1067460
