WO2002063640A1 - Permanent magnet and method for preparation thereof - Google Patents

Permanent magnet and method for preparation thereof Download PDF

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Publication number
WO2002063640A1
WO2002063640A1 PCT/JP2002/000994 JP0200994W WO02063640A1 WO 2002063640 A1 WO2002063640 A1 WO 2002063640A1 JP 0200994 W JP0200994 W JP 0200994W WO 02063640 A1 WO02063640 A1 WO 02063640A1
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WO
WIPO (PCT)
Prior art keywords
ferrite
preparation
plumpite
hexagonal
permanent magnet
Prior art date
Application number
PCT/JP2002/000994
Other languages
English (en)
French (fr)
Inventor
Etsushi Oda
Seiichi Hosokawa
Sachio Toyota
Original Assignee
Sumitomo Special Metals Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Special Metals Co., Ltd. filed Critical Sumitomo Special Metals Co., Ltd.
Priority to US10/466,935 priority Critical patent/US6955768B2/en
Priority to KR1020027015458A priority patent/KR100909701B1/ko
Priority to EP02711354.7A priority patent/EP1365423B1/en
Publication of WO2002063640A1 publication Critical patent/WO2002063640A1/ja

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    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
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    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure
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PCT/JP2002/000994 2001-02-07 2002-02-06 Permanent magnet and method for preparation thereof WO2002063640A1 (en)

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US10/466,935 US6955768B2 (en) 2001-02-07 2002-02-06 Permanent magnet and method for preparation thereof
KR1020027015458A KR100909701B1 (ko) 2001-02-07 2002-02-06 영구자석 및 그 제조방법
EP02711354.7A EP1365423B1 (en) 2001-02-07 2002-02-06 Method for the preparation of ferrite calcined body

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JP2001243821A JP2002313618A (ja) 2001-02-07 2001-08-10 永久磁石、およびその製造方法
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US6893581B2 (en) * 2002-02-01 2005-05-17 Sanyo Electric Co., Ltd. Composite magnetic material and a method for producing the same
CN102097195A (zh) * 2010-12-22 2011-06-15 娄底市玖鑫电子科技有限公司 一种宽温低功率损耗铁氧体磁性材料

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US7481947B2 (en) 2003-12-09 2009-01-27 Tdk Corporation Ferrite magnetic material and ferrite sintered magnet
CN100484900C (zh) * 2004-03-04 2009-05-06 Tdk株式会社 铁氧体磁性材料、铁氧体烧结磁体及其制造方法
BRPI0508979B1 (pt) * 2004-09-10 2016-07-12 Hitachi Metals Ltd material magnético de óxido e magneto sinterizado
CN100415653C (zh) * 2005-03-24 2008-09-03 上海大学 纳米尖晶石型ZnFe2O4的制备方法
JP4820312B2 (ja) * 2006-03-31 2011-11-24 Ｄｏｗａエレクトロニクス株式会社 ボンド磁石用フェライト磁性粉およびその製造方法、並びにボンド磁石
JP4883334B2 (ja) * 2010-03-10 2012-02-22 日立金属株式会社 フェライト焼結磁石及びその製造方法
JP5499329B2 (ja) * 2010-06-18 2014-05-21 日立金属株式会社 フェライト焼結磁石及びその製造方法
CN104926299B (zh) * 2015-06-20 2018-01-16 宁波博莱特光电科技股份有限公司 一种陶瓷插芯的制备方法
CN104961462B (zh) * 2015-06-20 2018-02-27 宁波博莱特光电科技股份有限公司 一种高强度氧化锆陶瓷插芯的制备方法
US20170018285A1 (en) * 2015-07-14 2017-01-19 HGST Netherlands B.V. Barium hexa-ferrite technology for mamr and advanced magnetic recording applications
CN105036726B (zh) * 2015-07-24 2017-05-24 天长市中德电子有限公司 一种高性能Mn‑Zn铁氧体材料及制备方法
CN105036725A (zh) * 2015-07-24 2015-11-11 天长市中德电子有限公司 一种Mn-Zn铁氧体材料及制备方法
CN106589363B (zh) * 2016-12-23 2019-03-26 安徽工业大学 一种聚苯胺/w型锶铁氧体复合材料的制备方法及其应用
JP7082033B2 (ja) * 2017-11-13 2022-06-07 Ｄｏｗａエレクトロニクス株式会社 ボンド磁石用フェライト粉末およびその製造方法
JP7071513B2 (ja) * 2018-08-28 2022-05-19 富士フイルム株式会社 マグネトプランバイト型六方晶フェライトの粉体の製造方法及び電波吸収体の製造方法
JP2022506448A (ja) 2018-11-02 2022-01-17 ロジャーズ・コーポレイション 低損失電力フェライト及び製造方法
CN109735215B (zh) * 2018-12-19 2021-04-13 北矿科技股份有限公司 一种磁性层及其制备方法
CN109516797B (zh) * 2018-12-19 2021-05-25 北矿科技股份有限公司 一种低sfd磁记录材料及其制备方法
CN109741764B (zh) * 2018-12-19 2020-12-18 北矿科技股份有限公司 一种磁记录材料及其制备方法
TWI693206B (zh) * 2019-03-08 2020-05-11 中國鋼鐵股份有限公司 改質鐵氧體磁粉的製造方法及鐵氧體磁石的製造方法
CN111205078A (zh) * 2020-01-13 2020-05-29 桂林电子科技大学 一种Bi1-xNdxFeO3稀土铁氧体磁性吸波材料的制备方法
JP7531373B2 (ja) 2020-11-26 2024-08-09 Ｄｏｗａエレクトロニクス株式会社 ボンド磁石用六方晶フェライト磁性粉とその製造方法、およびボンド磁石とその製造方法
CN113072368B (zh) * 2021-03-15 2022-05-13 杭州电子科技大学 一种高性能m型铁氧体的气氛烧结方法
CN115124336A (zh) * 2021-03-26 2022-09-30 日立金属株式会社 铁氧体预烧体和铁氧体烧结磁体的制造方法
JP7376627B2 (ja) * 2022-02-15 2023-11-08 Ｄｏｗａエレクトロニクス株式会社 マグネトプランバイト型六方晶フェライト磁性粉及びその製造方法並びに電波吸収体及びその製造方法
CN115784315B (zh) * 2022-06-24 2024-04-30 西北大学 一种用于基于化学链燃烧的高效二氧化碳捕集的氧载体及其制备方法和应用

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EP1365423A4 (en) 2006-04-26
WO2002063641A1 (fr) 2002-08-15
EP1365424A1 (en) 2003-11-26
CN1462452A (zh) 2003-12-17
KR100909701B1 (ko) 2009-07-29
US6955768B2 (en) 2005-10-18
EP1365423A1 (en) 2003-11-26
US20040061090A1 (en) 2004-04-01
EP1365423B1 (en) 2017-01-04
KR100824786B1 (ko) 2008-04-24
US20040053075A1 (en) 2004-03-18
CN1220991C (zh) 2005-09-28
CN1228793C (zh) 2005-11-23
KR20030084560A (ko) 2003-11-01
EP1365424A4 (en) 2006-05-03
DE60233385D1 (de) 2009-10-01
KR20030072211A (ko) 2003-09-13
JP2002313618A (ja) 2002-10-25
US7144642B2 (en) 2006-12-05
EP1365424B1 (en) 2009-08-19
CN1462453A (zh) 2003-12-17

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