DocumentCode :
1041932
Title :
Li-Mn ferrites for high-speed computer memory applications
Author :
Agajanian, Arthur H.
Author_Institution :
International Business Machines Corporation, Poughkeepsie, New York.
Volume :
6
Issue :
1
fYear :
1970
fDate :
3/1/1970 12:00:00 AM
Firstpage :
90
Lastpage :
95
Abstract :
The high Curie temperature region of the ternary system Li0.5 Fe2.5 O4 -MnFe2 O4 - Mn3 O4 has been investigated. Toroidal cores were fired using the two-step firing technique, and nearly all compositions investigated produced square 
curves with thresholds between 4 and 10 Oe. When optimized for thresholds between 4 and 6 Oe, a compositional region was found, which combined good squareness and fast switching with low temperature and stress sensitivities. Substitutions of up to 0.1 atom of Zn for Mn in these compositions increased voltage outputs uV1 and rV1 without significantly affecting the other useful properties.
curves with thresholds between 4 and 10 Oe. When optimized for thresholds between 4 and 6 Oe, a compositional region was found, which combined good squareness and fast switching with low temperature and stress sensitivities. Substitutions of up to 0.1 atom of Zn for Mn in these compositions increased voltage outputs uVKeywords :
Ferrite core memories; Lithium manganese ferrites; Manganese lithium ferrites; Application software; Calcium; Computer applications; Ferrites; Firing; Pulse measurements; Stress; Temperature measurement; Temperature sensors; Zinc;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1970.1066678
Filename :
1066678
Link To Document :
