MAGNETIC MATERIAL AND METHOD FOR PRODUCING MAGNETIC MATERIAL

WIPO Patent Application WO/2012/011464

A1

Provided are: a Z-type ferrite-based magnetic material which can be synthesized at low temperatures; and a method for producing a magnetic material, by which the Z-type ferrite-based magnetic material can be efficiently produced. A first blend, which is obtained by blending Bi in an amount of 0.1-1.0 part by weight in terms of Bi2O3 per 100 parts by weight of a main component that is represented by composition formula Ba3+XCo2+YFe24O41-δ (wherein δ represents oxygen defect(s)), is calcined, and then Si is blended into the thus-obtained calcine in an amount of 0.1-2 parts by weight in terms of SiO2 per 100 parts by weight of the main component in the calcine. The thus-obtained blend is then fired. The calcination temperature is set to 1,000-1,200˚C (preferably to 1,050-1,200˚C). Co is substituted by Cu and/or Zn in an amount of 1.0 mol or less. Zr is contained in an amount of 0.5 part by weight or less in terms of ZrO2 per 100 parts by weight of the main component.

JP55144421	MANUFACTURE OF FERRITE
JP3324242	MANUFACTURE OF MAGNETIC FLUID
JP2002016389	METHOD FOR MANUFACTURING MAGNETIC SHIELD

ISHIKAWA, Terunobu (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
石川輝伸 (〒55 京都府長岡京市東神足１丁目１０番１号　株式会社村田製作所内 Kyoto, 〒6178555, JP)

JP2011/066341

January 26, 2012

July 19, 2011

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MURATA MANUFACTURING CO.,LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
株式会社村田製作所 (〒55 京都府長岡京市東神足１丁目１０番１号 Kyoto, 〒6178555, JP)
ISHIKAWA, Terunobu (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)

H01F1/34; C01G49/00; C01G51/00; C04B35/26; H01F1/36

NISHIZAWA, Hitoshi (5th Floor, Daido Seimei Minami-kan,1-2-11, Edobori, Nishi-ku, Osaka-shi, Osaka 02, 〒5500002, JP)

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