CN104882150A - Heat assisted disk with graphene heat dissipation layer - Google Patents
Heat assisted disk with graphene heat dissipation layer Download PDFInfo
- Publication number
- CN104882150A CN104882150A CN201410073378.4A CN201410073378A CN104882150A CN 104882150 A CN104882150 A CN 104882150A CN 201410073378 A CN201410073378 A CN 201410073378A CN 104882150 A CN104882150 A CN 104882150A
- Authority
- CN
- China
- Prior art keywords
- layer
- heat dissipating
- magnetic recording
- dissipating layer
- magnetic
- 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.)
- Pending
Links
Landscapes
- Magnetic Record Carriers (AREA)
Abstract
The invention discloses a heat assisted disk with a graphene heat dissipation layer, comprising a substrate layer; a heat dissipation layer arranged on the substrate layer; a buffer layer arranged on the heat dissipation layer; a magnetic recording medium layer arranged on the buffer layer; a magnetic medium protection layer arranged on the magnetic recording medium layer; a lubricating layer arranged on the magnetic medium protection layer; and a first graphene heat dissipation layer in contact with the magnetic recording medium layer. According to the technical scheme, the heat assisted disk is provided with a high heat conductivity graphene heat dissipation layer, increases a cooling rate of magnetic recording medium materials, reduces heat diffusion between adjacent magnetic recording media, and increases a read-write signal to noise ratio and magnetic storage density.
Description
Technical field
The present invention relates to magnetic storage technical field, particularly relate to a kind of thermally assisted magnetic dish with Graphene heat dissipating layer.
Background technology
The development of magnetic storage technology becomes the massive store technology of current rewritable the most economic, and one of its typical apply is hard disc of computer.Certainly, the magnetic memory apparatus with the magnetic storage hard disk of tidemark density will be the leading role of the storage of " large data age ".Along with the arriving of networked information era, various information increases with presenting explosion type, to the preservation of information, retrieval, statistical study, becomes network application epoch sixty-four dollar question.Therefore, the storage density improving constantly magnetic memory apparatus is needed.
The quantity of storage density and unit area inner track and the quantity of magnetic recording media closely related.The direction of magnetization that tradition magnetic storage technology changes magnetic recording media by magnetic field stores data, reduces the particle size of magnetic recording media, can significantly improve magnetic storage density.When the memory capacity of magnetic memory apparatus brings up to 100Gbpsi by 20Gbpsi, the particle diameter of magnetic recording media is reduced to 9.5nm by 13nm, and thickness is reduced to 10nm by 17nm.But, when the particle size of magnetic recording media is more and more less, make the energy required for its polarity upset less, when being less than a certain yardstick, even the heat energy of room temperature can make its automatic turning, data will be destroyed, Here it is superparamagnetic e ffect, limits the further raising of magnetic memory apparatus storage density.
In order to resist superparamagnetic e ffect, the magnetic media material of high-coercive force can be adopted, the low-coercivity magnetic media material such as original CoPtCrB are substituted as CoPt, FePt etc., but due to the reduction along with magnetic recording media particle diameter, the volume of read-write head, also in continuous reduction, causes magnetic head that enough magnetic field cannot be provided to change the direction of magnetization of high-coercive force magnetic recording media.Patent US20040120064A1, CN1308918C etc. propose to adopt HAMR (Heat Assisted Magnetic Recording) technology (Heat Assisted Magnetic Recording, HAMR) and provide the method preparing the auxiliary read-write head of heat.By the laser applying near field focus in advance, the temperature of magnetic recording unit is raised and reduce its coercive force, then by large reluctance magnetic head access data.After laser beam is removed, this magnetic recording unit temperature reduces rapidly, recovers the coercive force that it is high, thus more stably can preserve data message.
In HAMR device, the heat radiation of contiguous magnetic recording unit must be avoided as far as possible, otherwise can affect the coercive force of contiguous magnetic recording unit, causes write by mistake.After early stage magnetic recording media is heated by disc substrates (aluminium material) heat radiation, but due to the coefficient of heat conductivity of aluminium lower, during disk read-write data, signal to noise ratio (S/N ratio) is larger.The proposition of patent US2013/0107679A1 adopts BeO heat dissipating layer to accelerate magnetic recording media heat radiation in disk structure.But heat dissipating layer coefficient of heat conductivity is low, causes magnetic recording media to dispel the heat slow, may write by mistake, also reduce the stability of storage when reading and writing data, restriction storage density increases further.
Summary of the invention
The object of the invention is to overcome problems of the prior art, provides a kind of thermally assisted magnetic dish with Graphene heat dissipating layer, comprising: substrate layer; Heat dissipating layer, is arranged on substrate layer; Cushion, is arranged on heat dissipating layer; Magnetic recording media layer, is arranged on cushion; Magnetic medium protective seam, is arranged on magnetic recording media layer; Lubricating layer, is arranged on protective seam; First Graphene heat dissipating layer, described first Graphene heat dissipating layer contacts with magnetic recording media layer.
Preferably, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and lubricating layer.
Preferably, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and cushion.
Preferably, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and lubricating layer and between magnetic recording media layer and cushion.
Preferably, also comprise the second Graphene heat dissipating layer, described second Graphene heat dissipating layer is arranged between cushion and heat dissipating layer.
Preferably, also comprise the second Graphene heat dissipating layer, described Graphene heat dissipating layer is arranged between heat dissipating layer and substrate layer.
Preferably, also comprise the second Graphene heat dissipating layer, described second Graphene heat dissipating layer is arranged between cushion and heat dissipating layer and between heat dissipating layer and substrate layer.
Beneficial effect of the present invention is: the present invention by arranging Graphene heat dissipating layer in magnetic memory apparatus, due to the heat conductivility that Graphene is good, the heat that magnetic storage medium can be made to produce in the process stored conducts out rapidly and loses, improve the cooldown rate of magnetic recording medium material, and the thermal diffusion that can reduce between adjacent magnetic recording media, improve the signal to noise ratio (S/N ratio) of read-write, improve magnetic storage density.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the schematic diagram of the embodiment of the present invention 2;
Fig. 3 is the schematic diagram of the embodiment of the present invention 3.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of thermally assisted magnetic dish with Graphene heat dissipating layer; the described thermally assisted magnetic dish with Graphene heat dissipating layer comprises substrate layer 1, heat dissipating layer 2, cushion 3, magnetic recording media layer 4, magnetic recording media protective seam 41 and lubricating layer 5; described substrate layer 1, heat dissipating layer 2, cushion 3, magnetic recording media layer 4, magnetic recording media protective seam 41 and lubricating layer 5 superpose formation successively; first Graphene heat dissipating layer 6, described first Graphene heat dissipating layer 6 magnetic recording media layer 4 contacts.The present invention is introduced in detail below in conjunction with specific embodiment.
Embodiment 1
Concrete structure is the schematic diagram of the embodiment of the present invention 1 see Fig. 1, Fig. 1, in embodiments of the invention 1, described in there is Graphene heat dissipating layer thermally assisted magnetic dish comprise substrate layer 1; Heat dissipating layer 2, is formed on substrate layer 1; Cushion 3, is formed on heat dissipating layer 2, magnetic recording media layer 4, is formed on cushion 3; Lubricating layer 5; be formed on magnetic recording media layer 4 and the first Graphene heat dissipating layer 6; described first Graphene heat dissipating layer 6 is arranged on magnetic recording media layer 4; between magnetic recording media layer 4 and lubricating layer 5; it is worthy of note; compare former magnetic medium protective seam diamond-like carbon film-coating (Diamond-likecarbon), grapheme material has good heat conductivility, the anticorrosion that nearly ruddiness transmitance is high and excellent, antifriction performance.Graphene heat dissipating layer 6 described in the present embodiment serves the effect of heat radiation and protection magnetic-media recording layer simultaneously, and namely Graphene heat dissipating layer 6 and magnetic medium protective seam 41 unite two into one in the present embodiment, have simplified the structure of magnetic memory apparatus.The thermally assisted magnetic dish with Graphene heat dissipating layer of the present embodiment is formed like this: on aluminium base flaggy, grow 700nm copper; Adopt electron beam evaporation or magnetically controlled sputter method, growth heat dissipating layer, the material of formation heat dissipating layer can be the one in gold (Au), silver (Ag), copper (Cu), aluminium nitride (AlN), beryllia (BeO), magnesium oxide (MgO) etc., but is not limited to above material; Grown buffer layer; Growth magnetic recording medium material, can adopt electron beam evaporation, magnetically controlled sputter method, self-assembled growth or nanometer embossing to generate; Magnetic recording medium material shifts a layer graphene and forms Graphene heat dissipating layer, release the transfer of the method such as adhesive tape, electrostatic film by PDMS, heat; Coating lubricating layer material.Especially, because HAMR adopts higher magnetic storage medium CoPt or FePt etc. of coercive force, light focus temperature is more than 450 DEG C, and conventional lubrication agent material is as PFPE(Perfluoropolyethers) etc. decomposition temperature be less than 300 DEG C, cannot use.Graphene, due to low friction factor, can double as the lubricating layer into thermally assisted magnetic memory storage.Coating lubricating layer 5 can be saved, and adopt graphene layer as lubricating layer.
Embodiment 2
Concrete structure is the schematic diagram of the embodiment of the present invention 2 see Fig. 2, Fig. 2, in embodiments of the invention 2, described in there is Graphene heat dissipating layer thermally assisted magnetic dish comprise substrate layer 1; Heat dissipating layer 2, is formed on substrate layer 1; Cushion 3, is formed on heat dissipating layer 2, magnetic recording media layer 4, is formed on cushion 3; Magnetic medium protective seam 41, is formed on magnetic recording media layer 4; Lubricating layer 5, be formed on magnetic medium layer protective seam 41 and the first Graphene heat dissipating layer 6, described first Graphene heat dissipating layer 6 is arranged at magnetic recording media layer 4 times, between magnetic recording media layer 4 and lubricating layer 5.The thermally assisted magnetic dish forming process with Graphene heat dissipating layer of the present embodiment is as follows: on aluminium base, grow 700nm copper; Adopt electron beam evaporation or magnetically controlled sputter method, growth heat dissipating layer, the material of formation heat dissipating layer can be the one in gold (Au), silver (Ag), copper (Cu), aluminium nitride (AlN), beryllia (BeO), magnesium oxide (MgO) etc., but is not limited to above material; Grown buffer layer; Shift a layer graphene on the buffer layer and form the first Graphene heat dissipating layer; Growth magnetic recording media layer, can adopt electron beam evaporation, magnetically controlled sputter method, self-assembled growth or nanometer embossing to generate; Growth magnetic recording media protective seam; Coating lubricating layer material.
Embodiment 3
In embodiments of the invention 3, described in there is Graphene heat dissipating layer thermally assisted magnetic dish comprise substrate layer 1; Heat dissipating layer 2, is formed on substrate layer 1; Cushion 3, is formed on heat dissipating layer 2, magnetic recording media layer 4, is formed on cushion 3; Lubricating layer 5, is formed on magnetic recording media layer 4; First Graphene heat dissipating layer 6 and the second Graphene heat dissipating layer 61; Described first Graphene heat dissipating layer 6 is arranged on the two sides of magnetic-media recording layer 4, between cushion 3 and magnetic-media recording layer 4 and between lubricating layer 5 and magnetic recording media layer 4.First Graphene heat dissipating layer 6 the same manner as in Example 1 unites two into one with magnetic recording media protective seam 41 in the present embodiment.It should be noted that, in order to reach better radiating effect, in a particular embodiment of the present invention except the first Graphene heat dissipating layer 6 is set, also between described cushion 3 and heat dissipating layer 2 and/or between heat dissipating layer 2 and substrate layer 1, be all provided with the second Graphene heat dissipating layer 61, concrete structure is see accompanying drawing 3, and its forming step such as embodiment 1, embodiment 2 do not repeat them here.
Table 1 lists the coefficient of heat conductivity of portion of material.Can see that the coefficient of heat conductivity of Graphene is about 20 times of aluminium base, heat dissipating layer also has larger room for improvement.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. there is a thermally assisted magnetic dish for Graphene heat dissipating layer, it is characterized in that, comprising:
Substrate layer;
Heat dissipating layer, is arranged on substrate layer;
Cushion, is arranged on heat dissipating layer;
Magnetic recording media layer, is arranged on cushion;
Magnetic medium protective seam, is arranged on magnetic recording media layer;
Lubricating layer, is arranged on protective seam;
First Graphene heat dissipating layer, described first Graphene heat dissipating layer contacts with magnetic recording media layer.
2. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and lubricating layer.
3. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and cushion.
4. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, described first Graphene heat dissipating layer is arranged between magnetic recording media layer and lubricating layer and between magnetic recording media layer and cushion.
5. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, also comprise the second Graphene heat dissipating layer, described second Graphene heat dissipating layer is arranged between cushion and heat dissipating layer.
6. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, also comprise the second Graphene heat dissipating layer, described Graphene heat dissipating layer is arranged between heat dissipating layer and substrate layer.
7. have the thermally assisted magnetic dish of Graphene heat dissipating layer as claimed in claim 1, it is characterized in that, also comprise the second Graphene heat dissipating layer, described second Graphene heat dissipating layer is arranged between cushion and heat dissipating layer and between heat dissipating layer and substrate layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073378.4A CN104882150A (en) | 2014-02-28 | 2014-02-28 | Heat assisted disk with graphene heat dissipation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073378.4A CN104882150A (en) | 2014-02-28 | 2014-02-28 | Heat assisted disk with graphene heat dissipation layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104882150A true CN104882150A (en) | 2015-09-02 |
Family
ID=53949617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410073378.4A Pending CN104882150A (en) | 2014-02-28 | 2014-02-28 | Heat assisted disk with graphene heat dissipation layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104882150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461094A (en) * | 2017-02-21 | 2018-08-28 | 昭和电工株式会社 | Magnetic recording media and magnet record playback device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080144206A1 (en) * | 2006-12-18 | 2008-06-19 | Seagate Technology Llc | Data storage apparatus including optically active nano-patterned media and electric field assisted recording method |
| CN101609609A (en) * | 2009-07-22 | 2009-12-23 | 管军 | Traffic signal lamp capable of doubly modulating time |
| US20100172220A1 (en) * | 2009-01-07 | 2010-07-08 | Tdk Corporation | Near-Field Light Generating Element Comprising Surface Plasmon Antenna And Waveguide With Groove |
| CN102737652A (en) * | 2011-03-31 | 2012-10-17 | 西部数据传媒公司 | Low roughness heatsink design for heat assisted magnetic recording media |
| CN103367623A (en) * | 2013-07-18 | 2013-10-23 | 深圳市华星光电技术有限公司 | Light-emitting device and manufacturing method thereof |
| CN103515535A (en) * | 2013-10-10 | 2014-01-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Preparing method of phase-changing memory contact electrode and phase-changing memory contact electrode |
| CN103514895A (en) * | 2012-06-26 | 2014-01-15 | 铼钻科技股份有限公司 | Magnetic storage unit and preparation method thereof |
| CN103553029A (en) * | 2013-10-31 | 2014-02-05 | 中国科学院上海微系统与信息技术研究所 | Method for preparing vertical graphene-based thermal material |
-
2014
- 2014-02-28 CN CN201410073378.4A patent/CN104882150A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080144206A1 (en) * | 2006-12-18 | 2008-06-19 | Seagate Technology Llc | Data storage apparatus including optically active nano-patterned media and electric field assisted recording method |
| US20100172220A1 (en) * | 2009-01-07 | 2010-07-08 | Tdk Corporation | Near-Field Light Generating Element Comprising Surface Plasmon Antenna And Waveguide With Groove |
| CN101609609A (en) * | 2009-07-22 | 2009-12-23 | 管军 | Traffic signal lamp capable of doubly modulating time |
| CN102737652A (en) * | 2011-03-31 | 2012-10-17 | 西部数据传媒公司 | Low roughness heatsink design for heat assisted magnetic recording media |
| CN103514895A (en) * | 2012-06-26 | 2014-01-15 | 铼钻科技股份有限公司 | Magnetic storage unit and preparation method thereof |
| CN103367623A (en) * | 2013-07-18 | 2013-10-23 | 深圳市华星光电技术有限公司 | Light-emitting device and manufacturing method thereof |
| CN103515535A (en) * | 2013-10-10 | 2014-01-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Preparing method of phase-changing memory contact electrode and phase-changing memory contact electrode |
| CN103553029A (en) * | 2013-10-31 | 2014-02-05 | 中国科学院上海微系统与信息技术研究所 | Method for preparing vertical graphene-based thermal material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461094A (en) * | 2017-02-21 | 2018-08-28 | 昭和电工株式会社 | Magnetic recording media and magnet record playback device |
| CN108461094B (en) * | 2017-02-21 | 2019-11-05 | 昭和电工株式会社 | Magnetic recording media and magnet record playback device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weller et al. | FePt heat assisted magnetic recording media | |
| Kief et al. | Materials for heat-assisted magnetic recording | |
| CN1178206C (en) | Perpendicular magnetic recording medium, magnetic recording device | |
| CN104103290B (en) | Magnetic recording media and magnetic memory apparatus | |
| US8605555B1 (en) | Recording media with multiple bi-layers of heatsink layer and amorphous layer for energy assisted magnetic recording system and methods for fabricating the same | |
| US7686972B2 (en) | Method for manufacturing magnetic recording medium | |
| CN104347086B (en) | Magnetic recording media and magnetic memory apparatus | |
| JP2011216155A (en) | Magnetic disk for heat assisted recording, method for manufacturing the same, and magnetic recording method | |
| US9940962B2 (en) | Low power thermally assisted data recording media | |
| WO2013172260A1 (en) | Magnetic recording medium and magnetic recording/reproducing device | |
| US6749904B1 (en) | Patterned magnetic media via thermally induced phase transition | |
| CN104205217A (en) | Magnetic recording medium for heat-assisted magnetic recording | |
| US10360936B2 (en) | Assisted magnetic recording medium including a pinning layer and magnetic storage device | |
| JP5340301B2 (en) | Magnetic recording medium | |
| JP2006120222A (en) | Magnetic recording medium and its manufacturing method | |
| CN110517709B (en) | Magnetic recording media and magnetic storage devices | |
| US9299377B2 (en) | Storage medium for storing data and servo information | |
| JP2008071455A (en) | Magnetic recording medium, its manufacturing method, and recording and reproducing device and recording and reproducing method of magnetic recording medium | |
| CN104882150A (en) | Heat assisted disk with graphene heat dissipation layer | |
| CN110875063B (en) | Heat-assisted magnetic recording medium and magnetic storage device | |
| JP2003317222A (en) | Recording medium | |
| US20090092858A1 (en) | Perpendicular magnetic recording film medium and method of manufacturing the same | |
| SG187650A1 (en) | Method and system for thermal imprint lithography | |
| JP2007073116A (en) | Recording method of patterned media | |
| JP4711984B2 (en) | Perpendicular magnetic recording medium, magnetic storage device, and magnetic recording method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |