CN1260560A - Ordering high-density parallel-recording magnetic disc making method - Google Patents
Ordering high-density parallel-recording magnetic disc making method Download PDFInfo
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- CN1260560A CN1260560A CN00112037.9A CN00112037A CN1260560A CN 1260560 A CN1260560 A CN 1260560A CN 00112037 A CN00112037 A CN 00112037A CN 1260560 A CN1260560 A CN 1260560A
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- hole
- magnetic material
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- density
- making
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- 238000000034 method Methods 0.000 title claims description 23
- 239000000696 magnetic material Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- 239000012266 salt solution Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- 150000002505 iron Chemical class 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 150000001868 cobalt Chemical class 0.000 claims description 2
- 238000002848 electrochemical method Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 150000002815 nickel Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000000866 electrolytic etching Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- -1 cobaltous sulphates Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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Abstract
The preparation method of ordered high-density parallel recording magnetic disk includes the following steps: on the aluminium substrate, preparing template whose holes are perpendicular to the substrate as carrier of magnetic material; growing magnetic material in orderly-arranged holes and making easy-to-magnetize shaft of magnetic material in the hole be perpendicular to axis of the hole. As compared with existent magnetic disk its storage density can be greatened by 10000-20000 times, it can fully utilize existent parallel magnetic recording writing and reading technology to make signal processing, and the utilization of said invention can prepare high-density standard 3.5 inch magnetic disk and PC machine hard disk.
Description
The present invention relates to a kind of method for making of parallel-recording magnetic disc of manufacture method, especially ordering high-density of parallel record magnetic-media recording material.
The situation of prior art and the problem of existence are before the present invention: existing magnetic recording media is two types of parallel record and perpendicular recordings.Perpendicular recording medium is to be made of the magnet unit array of easy magnetizing axis perpendicular to the record planar alignment.Reduce distance in the heart in the magnet unit, can improve storage density.In theory, perpendicular magnetic recording has very high recording density, but wants to reach or also need to overcome near this theoretical limit the technical barriers such as writing and read of signal.
Existing disk is parallel magnetic recording disk, and by the magnetic particle tracer signal of stochastic distribution, its recording density is very low, but the correlation techniques such as writing and read of data is very ripe.In parallel magnetic recording disk, the size that reduces magnetic particle can improve recording density, if but particulate is too small, and thermal effect can have a strong impact on its stability.In actual applications, use a plurality of particulates to write position (bit) as one.This disk is difficult to obtain very high recording density.As 3.5 inches floppy disks commonly used, recording capacity is 1.44 million.And utilize acid solution to prepare the substrate of aluminum oxide sequential holes---can use the sulfuric acid of variable concentrations, phosphoric acid, oxalic acid, solution such as chromic acid are done electrolytic solution; In template, insert magnetic material and can be used as magnetic recording media.The manufacture method of template can be referring to following report: Japanese applicating physical magazine 1996,35 volume L126-129 pages or leaves.(Jan.J.Appl.Phys.Vol.35，1996，PPL126-L129，Fabrication?of?goldnanodot?array?using?anodic?porous?alumina?as?an?evaporation?mask，Hideki?Masudaand?Masahiro?Satoh)。Such method is not used for making existing parallel-recording magnetic disc.
The objective of the invention is: a kind of method for making of parallel-recording magnetic disc of ordering high-density is provided, and recording density can be many greatly than existing disk, and can make full use of writing with sensing technique of existing parallel magnetic recording and carry out Signal Processing.The present invention also aims to provide a kind of method of making high density 3.5 inches floppy disks commonly used and PC hard disk.
The object of the present invention is achieved like this: by electrochemical method, the preparation hole is perpendicular to the template of the substrate carrier as magnetic material on aluminium substrate; And the magnetic material of in the hole of arranging in order, growing, make the axis (easy magnetizing axis be parallel to card) of the easy magnetizing axis of magnetic material in the hole perpendicular to the hole.Utilization is arranged in order, easy magnetizing axis is parallel to the magnetic recording of the magnetic material array realization signal of card.Use existing writing to realize the high density magnetic storage with sensing technique.
Characteristics of the present invention are: this is a kind of method for making of parallel-recording magnetic disc of ordering high-density, when making, extensive large scale also can guarantee it is accurate orderly template, storage density is than existing disk ten thousand times of 10-20 greatly, and can make full use of writing with sensing technique of existing parallel magnetic recording and carry out Signal Processing.Especially utilize the present invention to make 3.5 inches commonly used disks of high density and PC hard disk.
The magnet unit that the present invention uses in order (or in order accurate) to arrange has effectively prevented the bad influence of thermal effect.By reducing in the magnet unit distance in the heart, improved storage density greatly.Can utilize writing of existing parallel magnetic recording to carry out Signal Processing with sensing technique.
The invention will be further described below in conjunction with accompanying drawing and by embodiment:
Fig. 1 makes the electromicroscopic photograph of template for the inventive method
Fig. 2 is the magnetic hysteresis loop figure of the orderly magnetic recording medium material of cobalt plating of the present invention
The nano ordered template electromicroscopic photograph of making for the inventive method among Fig. 1, wherein the aperture is 30 nanometers, hole distance in the heart is 64 nanometers.
The substrate of preparation sequential holes can be used the sulfuric acid of variable concentrations, phosphoric acid, and oxalic acid, solution such as chromic acid are done electrolytic solution.Under different voltage, carry out electrolytic preparation.The substrate that makes can be passed through rare phosphoric acid, and acid solutions such as sulfuric acid corrode the diameter that can regulate hole.According to different preparation conditions, the diameter of substrate hole can be regulated to 500 nanometers from 2 nanometers, and hole distance in the heart can be regulated to 1000 nanometers from 20 nanometers.The method of making template has had reported in literature.
Operable magnetic material comprises: Fe, Co, Ni metal simple-substance; Fe, Co, Ni alloy; Fe, Co, Ni and Mn, Cr, Cu, V, Mo, the alloy of metallic elements such as W; Fe, Co, the alloy that nonmetalloids such as Ni and P form.
Can select different plating solution formulas according to different materials during plating.
Disk of the present invention is compared with existing 3.5 inches disks, and the recording capacity that writes down disk of the present invention on the medium of area equally is 200,000 times of existing 3.5 inches disks.
With the electromicroscopic photograph of the template of electrochemical production, and use magnetic hysteresis loop that iron does the recording medium that magnetic recording material obtains as shown in Figure 2.
With 0.3 mole every liter sulfuric acid solution, the template of 25 volts of constant voltage preparations was corroded 20 minutes in 30 degree centigrade 5% phosphoric acid after the electrolysis as shown in Figure 1.The diameter in hole is 30 nanometers, and hole distance in the heart is 64 nanometers.
Consisting of of electroplate liquid: 7 hydration cobaltous sulphates of every liter 200 gram, the boric acid that every liter of sodium chloride of 7 grams and 50 grams are every liter, electroplating voltage are the 1-3 volt, for example 1.5 volts.
To the template plating iron also is fully feasible: the consisting of of electroplate liquid: the ferrous sulphate of every liter 100 gram, electroplating voltage is 1.5 volts.The composition of electroplate liquid also can be other salt of cobalt, iron, for example hydrochloride.Other prescription of electroplate liquid comprises: the prescription that contains cobalt, nickel, iron salt solutions; The prescription that contains iron, cobalt salt solution; The prescription of cobalt, nickel salt solution; The prescription of nickel, iron salt solutions.The prescription of other electroplate liquid also comprises Fe, one to three kind of slaine and Mn among the Co, three kinds of Ni, Cr, Cu, V, the salt solusion of one to six kind of metallic element such as slaine among the Mo, six kinds of W; Fe, the salt solusion of nonmetalloid such as one to three kind of slaine among the Co, three kinds of Ni and P.The kind of nonmagnetic metal is a lot, is not limited to above-mentioned Mn, Cr, Cu, V, Mo, W.
Claims (5)
1. the method for making of ordering high-density parallel-recording magnetic disc is characterized in that by electrochemical method, and the preparation hole is perpendicular to the template of the substrate carrier as magnetic material on aluminium substrate; And the magnetic material of in the hole of arranging in order, growing, make the axis (easy magnetizing axis be parallel to card) of the easy magnetizing axis of magnetic material in the hole perpendicular to the hole.
2. by the method for making of the described ordering high-density parallel-recording magnetic disc of claim 1, it is characterized in that the preparation hole is perpendicular to the method employing electrolytic etching method of the template of substrate, with its carrier as magnetic material on the aluminium substrate; And in the orderly hole of arranging, electroplate the magnetic material of growing.
3. by the method for making of the described ordering high-density parallel-recording magnetic disc of claim 2, it is characterized in that Fe, Co, Ni metal simple-substance are electroplated in the method employing of plating growth magnetic material in the hole of arranging in order; Fe, Co, Ni alloy; Fe, Co, Ni and Mn, Cr, Cu, V, Mo, the alloy of metallic elements such as W.
4. by the method for making of the described ordering high-density parallel-recording magnetic disc of claim 3, it is characterized in that plating solution formula comprises the prescription that contains cobalt, nickel, iron salt solutions; The prescription that contains iron, cobalt salt solution; The prescription of cobalt, nickel salt solution; The prescription of nickel, iron salt solutions.
5. by the method for making of the described ordering high-density parallel-recording magnetic disc of claim 3, it is characterized in that the prescription of electroplate liquid also comprises Fe, Co, one to three kind of slaine and Mn among three kinds of the Ni, Cr, Cu, V, the salt solusion of one to six kind of metallic element such as slaine among the Mo, six kinds of W; Fe, the salt solusion of nonmetalloid such as one to three kind of slaine among the Co, three kinds of Ni and P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112037.9A CN1260560A (en) | 2000-01-19 | 2000-01-19 | Ordering high-density parallel-recording magnetic disc making method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112037.9A CN1260560A (en) | 2000-01-19 | 2000-01-19 | Ordering high-density parallel-recording magnetic disc making method |
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| Publication Number | Publication Date |
|---|---|
| CN1260560A true CN1260560A (en) | 2000-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00112037.9A Pending CN1260560A (en) | 2000-01-19 | 2000-01-19 | Ordering high-density parallel-recording magnetic disc making method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316456C (en) * | 2003-12-19 | 2007-05-16 | 三星电子株式会社 | Magnetic recording media |
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2000
- 2000-01-19 CN CN00112037.9A patent/CN1260560A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316456C (en) * | 2003-12-19 | 2007-05-16 | 三星电子株式会社 | Magnetic recording media |
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