Compositions – Magnetic – Iron-oxygen compound containing
Patent
1991-09-11
1997-05-06
Bonner, Melissa
Compositions
Magnetic
Iron-oxygen compound containing
252 6256, C04B 3530
Patent
active
056267894
ABSTRACT:
An improved NiZnCo ferrimagnetic core material which may further contain elements from the group Cr, Mn or Li. The invention permits enhancement of magnetic properties and results in core materials capable of efficient operation at high frequencies on the order of 1-100 MHz over a wide range of magnetic flux densities, on the order of 1-2500 Gauss. The composition of base NiZnCo ferrites are adjusted through ionic substitution. The magnetic properties of the ferrite are further enhanced through Bi.sub.2 O.sub.3 and SiO.sub.2 additions and controlled sintering. Methods of manufacturing the core material are also disclosed.
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American Research Corp. of Virginia
Bonner Melissa
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