Low-loss ferrite working between 1 MHZ and 100 MHZ and method of

Details Low-loss ferrite working between 1 MHZ and 100 MHZ and method of Low-loss ferrite working between 1 MHZ and 100 MHZ and method of

1997-03-28

2000-06-06

Koslow, C. Melissa

Compositions

Magnetic

Iron-oxygen compound containing

252 6262, 336233, 336221, C04B 3530, C04B 3534, H04B 500, H01F 1900, H01F 1704

Patent

active

060714301

ABSTRACT:
Disclosed is a ferrite material having low magnetic losses at frequencies of about 1 megahertz to 100 megahertz, and having firing and sintering temperatures lower than about 1000.degree. C. The material is a nickel-zinc-copper material with cobalt substitution, particularly well suited to the making of magnetic cores and more specifically to the making of micro-inductors.

REFERENCES:
patent: 3032503 (1962-05-01), Sixus et al.
patent: 4970432 (1990-11-01), Tikes et al.
patent: 4985659 (1991-01-01), Tikes et al.
patent: 5004952 (1991-04-01), Tikes et al.
Patent Abstracts of Japan, vol. 96, No. 9, & JP-A-08 133826 (Kyocera Corp.), May 28, 1996--Abridged.
Patent Abstracts of Japan, vol. 13, No. 343, (E-796), Aug. 2, 1989 & JP-A-01 101610 (Nippon Ferrite Ltd.), Apr. 19, 1989--Abridged.
H. T. Hahn, "The Substitution of Cobalt for Nickel in Stoichiometric Nickel-Zinc Ferrite", Journal of Applied Physics, vol. 69, No. 8, Apr. 15, 1991, pp. 6192-6194.
J. H. Nam, et al., "The Effects of Cu Substitution On The Electrical And Magnetic Properties Of NiZn Ferrites", 1995 Digests of Intermag. International Magnetics Conference, San Antionio, Apr. 18-21, 1995, p. JP-09.

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