WO2008149785A1 - 磁性酸化鉄粒子、磁性体、および電波吸収体 - Google Patents

磁性酸化鉄粒子、磁性体、および電波吸収体 Download PDF

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WO2008149785A1
WO2008149785A1 PCT/JP2008/059976 JP2008059976W WO2008149785A1 WO 2008149785 A1 WO2008149785 A1 WO 2008149785A1 JP 2008059976 W JP2008059976 W JP 2008059976W WO 2008149785 A1 WO2008149785 A1 WO 2008149785A1
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Prior art keywords
magnetic
iron oxide
magnetic material
radio wave
oxide particle
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PCT/JP2008/059976
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English (en)
French (fr)
Inventor
Shin-Ichi Ohkoshi
Shunsuke Sakurai
Takenori Yorinaga
Kazuyuki Matsumoto
Shinya Sasaki
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The University Of Tokyo
Dowa Electronics Materials Co., Ltd.
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Application filed by The University Of Tokyo, Dowa Electronics Materials Co., Ltd. filed Critical The University Of Tokyo
Priority to US12/451,731 priority Critical patent/US8444872B2/en
Priority to EP08764894.5A priority patent/EP2165975B1/en
Priority to CN2008800182341A priority patent/CN101687665B/zh
Priority to JP2009517830A priority patent/JP5445843B2/ja
Publication of WO2008149785A1 publication Critical patent/WO2008149785A1/ja

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Abstract

【課題】 高いＨｃと高いキュリー点とを有し、且つ、これらの磁気特性を制御可能でありながら、稀少または高価な原料を必要としない磁性材料を提供する。一般式ε－ＡｘＢｙＦｅ２－ｘ－ｙＯ３または、ε－ＡｘＢｙＣｚＦｅ２－ｘ－ｙ－ｚＯ３（但し、Ａ、Ｂ、Ｃは、Ｆｅを除く互いに異なる金属、０＜ｘ，ｙ，ｚ＜１）にて表記されるε－Ｆｅ２Ｏ３を主相とする磁性酸化鉄粒子が上記課題を解決する磁性材料であることを見出した。
PCT/JP2008/059976 2007-05-31 2008-05-30 磁性酸化鉄粒子、磁性体、および電波吸収体 WO2008149785A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/451,731 US8444872B2 (en) 2007-05-31 2008-05-30 Magnetic iron oxide particle, magnetic material, and radio wave absorber
EP08764894.5A EP2165975B1 (en) 2007-05-31 2008-05-30 Magnetic iron oxide particle, magnetic material, and radio wave absorber
CN2008800182341A CN101687665B (zh) 2007-05-31 2008-05-30 磁性氧化铁颗粒、磁性材料及电波吸收材料
JP2009517830A JP5445843B2 (ja) 2007-05-31 2008-05-30 磁性酸化鉄粒子、磁性体、および電波吸収体

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JP2007146182 2007-05-31
JP2007-146182 2007-05-31
JP2007-260071 2007-10-03
JP2007260071 2007-10-03

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WO2008149785A1 true WO2008149785A1 (ja) 2008-12-11

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