JP4677734B2 - 磁気記録媒体用磁性粉末 - Google Patents

磁気記録媒体用磁性粉末 Download PDF

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Publication number
JP4677734B2
JP4677734B2 JP2004122504A JP2004122504A JP4677734B2 JP 4677734 B2 JP4677734 B2 JP 4677734B2 JP 2004122504 A JP2004122504 A JP 2004122504A JP 2004122504 A JP2004122504 A JP 2004122504A JP 4677734 B2 JP4677734 B2 JP 4677734B2
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Japan
Prior art keywords
magnetic
powder
particles
magnetic powder
magnetic recording
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JP2004122504A
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Japanese (ja)
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JP2005310856A (ja
JP2005310856A5 (enExample
Inventor
慎一 紺野
健一 井上
俊彦 上山
憲司 正田
信也 佐々木
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Dowa Electronics Materials Co Ltd
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Dowa Electronics Materials Co Ltd
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Priority to JP2004122504A priority Critical patent/JP4677734B2/ja
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Publication of JP2005310856A5 publication Critical patent/JP2005310856A5/ja
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  • Magnetic Record Carriers (AREA)
JP2004122504A 2004-04-19 2004-04-19 磁気記録媒体用磁性粉末 Expired - Fee Related JP4677734B2 (ja)

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JP2004122504A JP4677734B2 (ja) 2004-04-19 2004-04-19 磁気記録媒体用磁性粉末

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JP2004122504A JP4677734B2 (ja) 2004-04-19 2004-04-19 磁気記録媒体用磁性粉末

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JP2005310856A JP2005310856A (ja) 2005-11-04
JP2005310856A5 JP2005310856A5 (enExample) 2005-12-15
JP4677734B2 true JP4677734B2 (ja) 2011-04-27

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JP2004122504A Expired - Fee Related JP4677734B2 (ja) 2004-04-19 2004-04-19 磁気記録媒体用磁性粉末

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2320435A4 (en) * 2008-08-05 2011-08-03 Dowa Electronics Materials Co Ltd METAL MAGNETIC POWDER FOR MAGNETIC RECORDING AND PROCESS FOR MANUFACTURING THE METAL MAGNET POWDER
JP5556982B2 (ja) * 2008-10-15 2014-07-23 戸田工業株式会社 強磁性金属粒子粉末及びその製造法、並びに磁気記録媒体
KR101496626B1 (ko) * 2013-03-13 2015-02-26 도와 일렉트로닉스 가부시키가이샤 자성 부품과 그것에 이용되는 연자성 금속 분말 및 그 제조 방법
JP6607751B2 (ja) * 2015-09-25 2019-11-20 Ｄｏｗａエレクトロニクス株式会社 Ｆｅ−Ｃｏ合金粉末およびその製造方法並びにアンテナ、インダクタおよびＥＭＩフィルタ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5626729A (en) * 1979-08-11 1981-03-14 Tdk Corp Powdered magnetic material for magnetic recording medium
JPS60141624A (ja) * 1983-12-27 1985-07-26 Ishihara Sangyo Kaisha Ltd コバルト含有針状磁性酸化鉄の製造方法
JP3473874B2 (ja) * 1995-07-04 2003-12-08 富士写真フイルム株式会社 磁気記録媒体
JP3473877B2 (ja) * 1995-10-13 2003-12-08 富士写真フイルム株式会社 磁気記録媒体
JP3750414B2 (ja) * 1999-04-19 2006-03-01 戸田工業株式会社 紡錘状ゲータイト粒子粉末、紡錘状ヘマタイト粒子粉末、及び鉄を主成分とする紡錘状金属磁性粒子粉末、並びにそれらの製造法
JP4356139B2 (ja) * 1999-05-20 2009-11-04 戸田工業株式会社 紡錘状ゲータイト粒子、紡錘状ヘマタイト粒子、及び鉄を主成分とする紡錘状金属磁性粒子、並びにそれらの製造法
JP2001068318A (ja) * 1999-08-27 2001-03-16 Fuji Photo Film Co Ltd 強磁性金属粉末及びそれを用いた磁気記録媒体
JP2001357511A (ja) * 2000-06-15 2001-12-26 Fuji Photo Film Co Ltd 強磁性金属粉末及びそれを用いた磁気記録媒体
JP4305617B2 (ja) * 2001-12-04 2009-07-29 戸田工業株式会社 鉄を主成分とする金属磁性粒子粉末及びその製造法並びに磁気記録媒体
JP2003303710A (ja) * 2002-04-12 2003-10-24 Fuji Photo Film Co Ltd 強磁性金属粉末及びそれを含む磁気記録媒体
JP3925640B2 (ja) * 2002-07-02 2007-06-06 戸田工業株式会社 磁気記録用紡錘状合金磁性粒子粉末及びその製造法

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JP2005310856A (ja) 2005-11-04

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