JP7122175B2 - 熱アシスト磁気記録媒体および磁気記憶装置 - Google Patents
熱アシスト磁気記録媒体および磁気記憶装置 Download PDFInfo
- Publication number
- JP7122175B2 JP7122175B2 JP2018120042A JP2018120042A JP7122175B2 JP 7122175 B2 JP7122175 B2 JP 7122175B2 JP 2018120042 A JP2018120042 A JP 2018120042A JP 2018120042 A JP2018120042 A JP 2018120042A JP 7122175 B2 JP7122175 B2 JP 7122175B2
- Authority
- JP
- Japan
- Prior art keywords
- oxide layer
- magnetic
- recording medium
- layer
- oxide
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 239000000395 magnesium oxide Substances 0.000 claims description 22
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 22
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 claims description 4
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 4
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 4
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 claims description 3
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 claims description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- -1 tungsten nitride Chemical class 0.000 claims description 3
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 claims description 2
- 229910039444 MoC Inorganic materials 0.000 claims description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 2
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 2
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical group O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 96
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000011241 protective layer Substances 0.000 description 7
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 150000003682 vanadium compounds Chemical class 0.000 description 5
- 229910005335 FePt Inorganic materials 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000006249 magnetic particle Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- KELHQGOVULCJSG-UHFFFAOYSA-N n,n-dimethyl-1-(5-methylfuran-2-yl)ethane-1,2-diamine Chemical compound CN(C)C(CN)C1=CC=C(C)O1 KELHQGOVULCJSG-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910018979 CoPt Inorganic materials 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007737 ion beam deposition Methods 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 239000010702 perfluoropolyether Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000929 Ru alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- IVHJCRXBQPGLOV-UHFFFAOYSA-N azanylidynetungsten Chemical compound [W]#N IVHJCRXBQPGLOV-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- CNEOGBIICRAWOH-UHFFFAOYSA-N methane;molybdenum Chemical compound C.[Mo] CNEOGBIICRAWOH-UHFFFAOYSA-N 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- KFAFTZQGYMGWLU-UHFFFAOYSA-N oxo(oxovanadiooxy)vanadium Chemical compound O=[V]O[V]=O KFAFTZQGYMGWLU-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4866—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives the arm comprising an optical waveguide, e.g. for thermally-assisted recording
-
- 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
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
-
- 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
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
(2)前記第二の酸化物層は、V 2 O 3 、窒化バナジウム及び炭化バナジウムの総含有量が2mol%~40mol%の範囲内であることを特徴とする(1)に記載の熱アシスト磁気記録媒体。
(3)基板と、下地層と、L1 0 構造を有する合金を含む磁性層を有し、前記下地層は、前記基板の側から、bcc構造を有する物質を含むbcc下地層、前記bcc下地層と接触している第一の酸化物層、前記磁性層と接触している第二の酸化物層がこの順で積層されており、前記第一の酸化物層および前記第二の酸化物層は、酸化マグネシウムを含み、前記第二の酸化物層は、窒化バナジウムおよび炭化バナジウムからなる群より選択される一種以上の化合物をさらに含むことを特徴とする熱アシスト磁気記録媒体。
(4)前記第二の酸化物層は、窒化バナジウムおよび炭化バナジウムの総含有量が2mol%~40mol%の範囲内であることを特徴とする(3)に記載の熱アシスト磁気記録媒体。
(5)前記第二の酸化物層は、厚さが0.2nm~2nmの範囲内であることを特徴とする(1)~(4)の何れか1つに記載の熱アシスト磁気記録媒体。
(6)前記第一の酸化物層は、酸化タングステン、酸化ニオブ、酸化モリブデン、酸化タンタル、窒化タングステン、窒化ニオブ、窒化モリブデン、窒化タンタル、炭化タングステン、炭化モリブデン、炭化ニオブ及び炭化タンタルからなる群より選択される一種以上の化合物を含み、該化合物の総含有量が1mol%~10mol%の範囲内であることを特徴とする(1)~(5)の何れか1つに記載の熱アシスト磁気記録媒体。
(7)前記磁性層は、前記第二の酸化物層との界面において、磁性粒子の粒界部に、窒素元素、酸素元素または炭素元素を含むことを特徴とする(1)~(6)の何れか1つに記載の熱アシスト磁気記録媒体。
(8)(1)~(7)の何れか1つに記載の熱アシスト磁気記録媒体を有することを特徴とする磁気記憶装置。
図1に、本実施形態の熱アシスト磁気記録媒体の層構成の一例を示す。
本実施形態の磁気記憶装置は、本実施形態の熱アシスト磁気記録媒体を有していれば、特に限定されない。
耐熱ガラス基板上に、厚さ50nmのCr-50at%Ti(Crの含有量50at%、Tiの含有量50at%)合金層(下地層)と、厚さ25nmのCo-20at%Ta-5at%B合金層(軟磁性下地層)をこの順で形成し、250℃まで加熱した後、厚さ10nmのCr層(bcc下地層)を形成した。その後、第一の酸化物層と、第二の酸化物層をこの順で形成し、520℃まで加熱した後、厚さ6nmの磁性層と、厚さ3nmのカーボン層(保護層)を形成した。なお、比較例2、3においては、それぞれ第一の酸化物層、第二の酸化物層を形成しなかった。最後に、保護層上に、パーフルオロポリエーテル系の潤滑剤を塗布して潤滑剤層を形成し、熱アシスト磁気記録媒体を得た。
図2の磁気記憶装置に熱アシスト磁気記録媒体を組み込んだ後、図4の磁気ヘッドを用いて、熱アシスト磁気記録媒体を加熱し、線記録密度1600kFCI(kilo Flux changes per Inch)の信号を記録し、SN比(SNR)を測定した。また、800kFCIの信号を書き込んだ後、107kFCIの信号を重ね書きし、800kFCIの信号の残り成分を評価し、重ね書き特性(OW)を測定した。
2 下地層
21 bcc下地層
22 第一の酸化物層
23 第二の酸化物層
3 磁性層
100 磁気記録媒体
101 磁気記録媒体駆動部
102 磁気ヘッド
103 磁気ヘッド駆動部
104 記録再生信号処理系
201 主磁極
202 補助磁極
203 コイル
204 レーザーダイオード(LD)
205 レーザー光
206 近接場光発生素子
207 導波路
208 記録ヘッド
209 シールド
210 再生素子
211 再生ヘッド
Claims (8)
- 基板と、下地層と、L10構造を有する合金を含む磁性層を有し、
前記下地層は、前記基板の側から、bcc構造を有する物質を含むbcc下地層、前記bcc下地層と接触している第一の酸化物層、前記磁性層と接触している第二の酸化物層がこの順で積層されており、
前記第一の酸化物層および前記第二の酸化物層は、酸化マグネシウムを含み、
前記第二の酸化物層は、V 2 O 3 、窒化バナジウムおよび炭化バナジウムからなる群より選択される一種以上の化合物をさらに含むことを特徴とする熱アシスト磁気記録媒体。 - 前記第二の酸化物層は、V 2 O 3 、窒化バナジウムおよび炭化バナジウムの総含有量が2mol%~40mol%の範囲内であることを特徴とする請求項1に記載の熱アシスト磁気記録媒体。
- 基板と、下地層と、L1 0 構造を有する合金を含む磁性層を有し、
前記下地層は、前記基板の側から、bcc構造を有する物質を含むbcc下地層、前記bcc下地層と接触している第一の酸化物層、前記磁性層と接触している第二の酸化物層がこの順で積層されており、
前記第一の酸化物層および前記第二の酸化物層は、酸化マグネシウムを含み、
前記第二の酸化物層は、窒化バナジウムおよび炭化バナジウムからなる群より選択される一種以上の化合物をさらに含むことを特徴とする熱アシスト磁気記録媒体。 - 前記第二の酸化物層は、窒化バナジウムおよび炭化バナジウムの総含有量が2mol%~40mol%の範囲内であることを特徴とする請求項3に記載の熱アシスト磁気記録媒体。
- 前記第二の酸化物層は、厚さが0.2nm~2nmの範囲内であることを特徴とする請求項1~4の何れか一項に記載の熱アシスト磁気記録媒体。
- 前記第一の酸化物層は、酸化タングステン、酸化ニオブ、酸化モリブデン、酸化タンタル、窒化タングステン、窒化ニオブ、窒化モリブデン、窒化タンタル、炭化タングステン、炭化モリブデン、炭化ニオブおよび炭化タンタルからなる群より選択される一種以上の化合物を含み、該化合物の総含有量が1mol%~10mol%の範囲内であることを特徴とする請求項1~5の何れか1項に記載の熱アシスト磁気記録媒体。
- 前記磁性層は、前記第二の酸化物層との界面において、磁性粒子の粒界部に、窒素元素、酸素元素または炭素元素を含むことを特徴とする請求項1~6の何れか1項に記載の熱アシスト磁気記録媒体。
- 請求項1~7の何れか1項に記載の熱アシスト磁気記録媒体を有することを特徴とする磁気記憶装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018120042A JP7122175B2 (ja) | 2018-06-25 | 2018-06-25 | 熱アシスト磁気記録媒体および磁気記憶装置 |
| US16/433,377 US11037591B2 (en) | 2018-06-25 | 2019-06-06 | Heat-assisted magnetic recording medium and magnetic storage apparatus |
| CN201910505522.XA CN110634509B (zh) | 2018-06-25 | 2019-06-12 | 热辅助磁记录介质和磁存储装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018120042A JP7122175B2 (ja) | 2018-06-25 | 2018-06-25 | 熱アシスト磁気記録媒体および磁気記憶装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020004463A JP2020004463A (ja) | 2020-01-09 |
| JP7122175B2 true JP7122175B2 (ja) | 2022-08-19 |
Family
ID=68968393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018120042A Active JP7122175B2 (ja) | 2018-06-25 | 2018-06-25 | 熱アシスト磁気記録媒体および磁気記憶装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11037591B2 (ja) |
| JP (1) | JP7122175B2 (ja) |
| CN (1) | CN110634509B (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6935869B2 (ja) * | 2018-06-27 | 2021-09-15 | 昭和電工株式会社 | 熱アシスト磁気記録媒体および磁気記憶装置 |
| CN111863372B (zh) * | 2020-07-28 | 2021-08-20 | 安徽智磁新材料科技有限公司 | 一种抗电磁干扰的软磁颗粒膜及其制备方法 |
| JP7683876B2 (ja) * | 2021-04-05 | 2025-05-27 | 株式会社レゾナック・ハードディスク | 磁気記録媒体の製造方法、磁気記録媒体及び磁気記憶装置 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090136782A1 (en) | 2007-11-28 | 2009-05-28 | Seagate Technology Llc | Magnetic recording media having a chemically ordered magnetic layer |
| JP2015018595A (ja) | 2013-07-11 | 2015-01-29 | エイチジーエスティーネザーランドビーブイ | 垂直磁気記録媒体 |
| JP2015032326A (ja) | 2013-07-31 | 2015-02-16 | 昭和電工株式会社 | 磁気記録媒体、磁気記憶装置 |
| US20170018286A1 (en) | 2015-07-16 | 2017-01-19 | Agency For Science, Technology And Research | Recording medium for heat assisted magnetic recording and method of forming the same |
| JP2017224371A (ja) | 2016-06-15 | 2017-12-21 | 昭和電工株式会社 | 磁気記録媒体及び磁気記憶装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5561766B2 (ja) | 2010-02-04 | 2014-07-30 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記憶装置 |
| JP5570270B2 (ja) | 2010-03-29 | 2014-08-13 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記憶装置 |
| JP5787344B2 (ja) | 2011-02-15 | 2015-09-30 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記憶装置 |
| KR101731847B1 (ko) | 2011-07-01 | 2017-05-08 | 우베 마테리알즈 가부시키가이샤 | 스퍼터링용 MgO 타겟 |
| JP5923324B2 (ja) * | 2012-01-31 | 2016-05-24 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記録再生装置 |
| JP5961439B2 (ja) * | 2012-05-01 | 2016-08-02 | 昭和電工株式会社 | 熱アシスト磁気記録媒体及び磁気記録再生装置 |
| JP6014385B2 (ja) * | 2012-05-14 | 2016-10-25 | 昭和電工株式会社 | 磁気記録媒体及び磁気記録再生装置 |
| US8509039B1 (en) * | 2012-06-28 | 2013-08-13 | HGST Netherlands B.V. | Thermally-assisted recording (TAR) disk with low thermal-conductivity underlayer |
| US9087543B2 (en) * | 2013-06-06 | 2015-07-21 | International Business Machines Corporation | Spin torque MRAM having perpendicular magnetization with oxide interface |
-
2018
- 2018-06-25 JP JP2018120042A patent/JP7122175B2/ja active Active
-
2019
- 2019-06-06 US US16/433,377 patent/US11037591B2/en active Active
- 2019-06-12 CN CN201910505522.XA patent/CN110634509B/zh active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090136782A1 (en) | 2007-11-28 | 2009-05-28 | Seagate Technology Llc | Magnetic recording media having a chemically ordered magnetic layer |
| JP2015018595A (ja) | 2013-07-11 | 2015-01-29 | エイチジーエスティーネザーランドビーブイ | 垂直磁気記録媒体 |
| JP2015032326A (ja) | 2013-07-31 | 2015-02-16 | 昭和電工株式会社 | 磁気記録媒体、磁気記憶装置 |
| US20170018286A1 (en) | 2015-07-16 | 2017-01-19 | Agency For Science, Technology And Research | Recording medium for heat assisted magnetic recording and method of forming the same |
| JP2017224371A (ja) | 2016-06-15 | 2017-12-21 | 昭和電工株式会社 | 磁気記録媒体及び磁気記憶装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110634509B (zh) | 2020-12-29 |
| US20190392860A1 (en) | 2019-12-26 |
| CN110634509A (zh) | 2019-12-31 |
| US11037591B2 (en) | 2021-06-15 |
| JP2020004463A (ja) | 2020-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6145332B2 (ja) | 磁気記録媒体、磁気記憶装置 | |
| JP6832189B2 (ja) | 磁気記録媒体及び磁気記録再生装置 | |
| US8792313B2 (en) | Magnetic recording medium having multiple under layers for heat-assisted magnetic recording apparatus | |
| JP6014385B2 (ja) | 磁気記録媒体及び磁気記録再生装置 | |
| JP7011477B2 (ja) | アシスト磁気記録媒体及び磁気記憶装置 | |
| US10276202B1 (en) | Heat-assisted magnetic recording (HAMR) medium with rhodium or rhodium-based alloy heat-sink layer | |
| US10109309B1 (en) | Heat-assisted magnetic recording (HAMR) medium with heat-sink layer having anisotropic thermal conductivity | |
| US9824710B1 (en) | Heat-assisted magnetic recording (HAMR) medium with thermal barrier layer in multilayered heat-sink structure | |
| JP7122175B2 (ja) | 熱アシスト磁気記録媒体および磁気記憶装置 | |
| US10650854B1 (en) | Heat-assisted magnetic recording (HAMR) medium with improved corrosion resistance | |
| JP2017224371A (ja) | 磁気記録媒体及び磁気記憶装置 | |
| JP5961439B2 (ja) | 熱アシスト磁気記録媒体及び磁気記録再生装置 | |
| JP2018106774A (ja) | 磁気記録媒体および磁気記憶装置 | |
| JP7279563B2 (ja) | 熱アシスト磁気記録媒体および磁気記憶装置 | |
| US9824711B1 (en) | Soft underlayer for heat assisted magnetic recording media | |
| JP7642435B2 (ja) | 磁気記録媒体、磁気記録媒体の製造方法及び磁気記憶装置 | |
| JP7371494B2 (ja) | 磁気記録媒体および磁気記憶装置 | |
| US20250087238A1 (en) | Magnetic recording medium and magnetic storage apparatus | |
| JP7107765B2 (ja) | アシスト磁気記録媒体および磁気記憶装置 | |
| JP2018113092A (ja) | 磁気記録媒体および磁気記憶装置 | |
| JP6935869B2 (ja) | 熱アシスト磁気記録媒体および磁気記憶装置 | |
| JP2025017663A (ja) | 磁気記録媒体、磁気記録媒体の製造方法、磁気記憶装置 | |
| JP7388226B2 (ja) | 磁気記録媒体およびその製造方法ならびに磁気記憶装置 | |
| JP6803045B2 (ja) | 磁気記録媒体および磁気記憶装置 | |
| JP5796883B2 (ja) | 熱アシスト磁気記録媒体及び磁気記録再生装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210317 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220218 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220308 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220412 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20220802 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20220808 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7122175 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |