Toda Kogyo Corporation

Satoshi Nomura

Yasuhiko Fujii

Yasushi Nishio

Jun Koujima

Hiromitsu Sakurai

Manato Nakatsukasa

The present invention relates to an electronic component, and also relates to an antenna for information communication using a magnetic field component, which is capable of satisfying both of downsizing and improvement in communication sensitivity. The electronic component of the present invention comprises a ferrite core and a coil, in which a ferrite constituting the ferrite core has a spinel structure and comprises Fe, Ni, Zn, Cu and Co as constitutional metal elements, and when contents of the respective constitutional metal elements in the ferrite are calculated in terms of FeO, NiO, ZnO, CuO and CoO, contents of FeO, NiO, ZnO, CuO and CoO in the ferrite are 46 to 50 mol %, 20 to 27 mol %, 15 to 22 mol %, 9 to 11 mol % and 0.01 to 1.0 mol %, respectively, based on a total content of FeO, NiO, ZnO, CuO and CoO.

Electronic component, antenna and RF tag

The object of the present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which is capable of obtaining a bonded magnet molded product having a good magnetic force and a magnetic waveform as well as high iHc and Hk by injection molding. The present invention aims at providing a bonded magnet molded product using the ferrite particles and the resin composition. The aforementioned object of the present invention can be achieved by ferrite particles for bonded magnets which have a crystal distortion of not more than 0.14 as measured by XRD, and an average particle diameter of not less than 1.30 &#x3bc;m as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the resin composition.

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Otake, Japan

Satoshi Nomura