Title:
低透磁損失を有するニッケル-マンガン-コバルト系スピネルフェライトの製造方法およびこれにより製造されたニッケル-マンガン-コバルト系スピネルフェライト
Document Type and Number:
Japanese Patent JP2011529436
Kind Code:
A
Abstract:
Disclosed herein is a method for producing a spinel ferrite which has a low permeability loss and a low dielectric loss so that the spinel ferrite can be widely used as a material for high-frequency (MHz) electronic components, and a spinel ferrite produced thereby. The method for producing the spinel ferrite comprises the steps of: providing nickel oxide, cobalt oxide, manganese oxide and iron oxide; wet-mixing the nickel oxide, the cobalt oxide, the manganese oxide and the iron oxide in methanol to obtain a mixture; collecting powder from the mixture and drying the collected powder; grinding the dried powder; and heat-treating the dried powder, thereby producing a nickel-manganese-cobalt spinel ferrite having a low permeability loss and a low dielectric loss. The nickel-manganese-cobalt spinel ferrite can be widely as a material for RF electronic components, and when it is applied to an antenna, it can reduce the length of the antenna and improve the bandwidth, efficiency and performance of the antenna.
Inventors:
Ryo, Byung Hoon
Sun, Wonmo
Anne, Wonki
Sun, Wonmo
Anne, Wonki
Application Number:
JP2011521054A
Publication Date:
December 08, 2011
Filing Date:
August 10, 2009
Export Citation:
Assignee:
EM Company Limited
International Classes:
C01G49/00; C04B35/28; C04B35/622; H01F1/34
Domestic Patent References:
| JP2006229037A | 2006-08-31 | |||
| JP2004123404A | 2004-04-22 | |||
| JPH10279312A | 1998-10-20 | |||
| JP2008127222A | 2008-06-05 | |||
| JP2005314176A | 2005-11-10 | |||
| JPH1124305A | 1999-01-29 | |||
| JP2002118015A | 2002-04-19 | |||
| JP2005109191A | 2005-04-21 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto