SG11201405518YA - Magnetic recording medium for heat-assisted magnetic recording - Google Patents

Magnetic recording medium for heat-assisted magnetic recording

Info

Publication number
SG11201405518YA
SG11201405518YA SG11201405518YA SG11201405518YA SG11201405518YA SG 11201405518Y A SG11201405518Y A SG 11201405518YA SG 11201405518Y A SG11201405518Y A SG 11201405518YA SG 11201405518Y A SG11201405518Y A SG 11201405518YA SG 11201405518Y A SG11201405518Y A SG 11201405518YA
Authority
SG
Singapore
Prior art keywords
magnetic recording
heat
recording medium
assisted
assisted magnetic
Prior art date
Application number
SG11201405518YA
Other languages
English (en)
Inventor
Shinji Uchida
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of SG11201405518YA publication Critical patent/SG11201405518YA/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7375—Non-polymeric layer under the lowermost magnetic recording layer for heat-assisted or thermally-assisted magnetic recording [HAMR, TAMR]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
SG11201405518YA 2012-03-22 2012-07-11 Magnetic recording medium for heat-assisted magnetic recording SG11201405518YA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012065458 2012-03-22
PCT/JP2012/004491 WO2013140469A1 (ja) 2012-03-22 2012-07-11 熱アシスト磁気記録用の磁気記録媒体

Publications (1)

Publication Number Publication Date
SG11201405518YA true SG11201405518YA (en) 2014-11-27

Family

ID=49221966

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201405518YA SG11201405518YA (en) 2012-03-22 2012-07-11 Magnetic recording medium for heat-assisted magnetic recording

Country Status (5)

Country Link
US (1) US9728218B2 (ja)
JP (1) JP5880686B2 (ja)
CN (1) CN104205217B (ja)
SG (1) SG11201405518YA (ja)
WO (1) WO2013140469A1 (ja)

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JP2014110064A (ja) * 2012-11-30 2014-06-12 Toshiba Corp 磁気記録媒体、その製造方法、及び磁気記録再生装置
MY167287A (en) * 2012-12-06 2018-08-15 Fuji Electric Co Ltd Perpendicular magnetic recording medium
JP6163744B2 (ja) * 2012-12-06 2017-07-19 富士電機株式会社 垂直磁気記録媒体
JP6245708B2 (ja) * 2013-09-12 2017-12-13 国立研究開発法人物質・材料研究機構 垂直磁気記録媒体およびその製造方法
MY160495A (en) * 2013-12-10 2017-03-15 Fuji Electric Co Ltd Perpendicular magnetic recording medium
US9443545B2 (en) 2013-12-24 2016-09-13 HGST Netherlands B.V. Thermally stable Au alloys as a heat diffusion and plasmonic underlayer for heat-assisted magnetic recording (HAMR) media
US9459835B2 (en) * 2014-01-15 2016-10-04 HGST Netherlands B.V. Random number generator by superparamagnetism
CN105637585B (zh) * 2014-04-03 2019-04-23 富士电机株式会社 磁记录介质
JP5874872B1 (ja) * 2014-05-12 2016-03-02 富士電機株式会社 垂直磁気記録媒体の製造方法
US9558777B2 (en) * 2014-11-26 2017-01-31 HGST Netherlands B.V. Heat assisted magnetic recording (HAMR) media having a highly ordered crystalline structure
JP6594633B2 (ja) * 2015-02-23 2019-10-23 富士電機株式会社 磁気記録媒体
JP6260742B2 (ja) * 2015-07-02 2018-01-17 富士電機株式会社 磁気記録媒体
JP6767251B2 (ja) * 2016-12-08 2020-10-14 昭和電工株式会社 磁気記録媒体の製造方法
JP6767256B2 (ja) * 2016-12-21 2020-10-14 昭和電工株式会社 磁気記録媒体の製造方法
JP6932628B2 (ja) * 2017-12-07 2021-09-08 昭和電工株式会社 磁気記録媒体
TWI702294B (zh) * 2018-07-31 2020-08-21 日商田中貴金屬工業股份有限公司 磁氣記錄媒體用濺鍍靶

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JP3786453B2 (ja) 1994-07-11 2006-06-14 株式会社東芝 磁気記録媒体および磁気記録再生装置
JP3318204B2 (ja) 1996-05-31 2002-08-26 財団法人電気磁気材料研究所 垂直磁化膜およびその製造法ならびに 垂直磁気記録媒体
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JP5137087B2 (ja) 2006-09-08 2013-02-06 エイジェンシー フォア サイエンス テクノロジー アンド リサーチ Ｌ１ｏ規則垂直記録媒体の製造方法
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US8530065B1 (en) * 2010-08-10 2013-09-10 WD Media, LLC Composite magnetic recording medium
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JP5145437B2 (ja) * 2011-03-02 2013-02-20 株式会社日立製作所 磁気記録媒体
US8481181B2 (en) * 2011-03-31 2013-07-09 Seagate Technology Llc Exchange coupled magnetic elements
US9822441B2 (en) * 2015-03-31 2017-11-21 WD Media, LLC Iridium underlayer for heat assisted magnetic recording media

Also Published As

Publication number Publication date
US20140377590A1 (en) 2014-12-25
WO2013140469A1 (ja) 2013-09-26
US9728218B2 (en) 2017-08-08
CN104205217B (zh) 2017-10-13
CN104205217A (zh) 2014-12-10
JPWO2013140469A1 (ja) 2015-08-03
JP5880686B2 (ja) 2016-03-09

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