WO2008129605A1 - 磁性素子の製造法 - Google Patents
磁性素子の製造法 Download PDFInfo
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- WO2008129605A1 WO2008129605A1 PCT/JP2007/057689 JP2007057689W WO2008129605A1 WO 2008129605 A1 WO2008129605 A1 WO 2008129605A1 JP 2007057689 W JP2007057689 W JP 2007057689W WO 2008129605 A1 WO2008129605 A1 WO 2008129605A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F4/00—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3909—Arrangements using a magnetic tunnel junction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3254—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the spacer being semiconducting or insulating, e.g. for spin tunnel junction [STJ]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/30—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE]
- H01F41/302—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F41/308—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices lift-off processes, e.g. ion milling, for trimming or patterning
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/01—Manufacture or treatment
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/161—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect details concerning the memory cell structure, e.g. the layers of the ferromagnetic memory cell
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
Definitions
- the present invention relates to a method for manufacturing a magnetic element having a dry etching process. More specifically, the present invention relates to a method of manufacturing a magnetic element having a step of performing dry etching at a high etching rate and a high selection ratio when finely processing a magnetic thin film.
- MRAM magnetic random access memory
- GMR giant magnetoresistance
- TMR tunnel magnetoresistance
- ion milling has often been used for etching magnetic materials.
- ion milling is a physical sputtering etching, it is difficult to achieve selectivity with respect to various materials used as a mask, and the processing shape has problems such as the bottom of the material to be etched being tapered. For this reason, it is not suitable for manufacturing large-capacity MR AM, which requires particularly fine processing technology, and it is difficult to process uniformity well with a large area substrate of 30 Omm, and the yield has not increased. .
- RIE reactive Ion Etching
- Magnetic materials such as CoFe and Copt are generally poor in reactivity and difficult to process without etching residues and sidewall deposits.
- nitrogen-containing compounds such as ammonia (NH 3 ) or amine gases are used for selective etching of transition metal magnetic materials.
- H8-2 5 3 8 8 1 proposes carbon monoxide (CO) gas with added gas as a reactive gas for dry etching, etching for dry etching of magnetic material using a mask of non-organic material
- CO carbon monoxide
- a gas an alcohol having at least one hydroxyl group is proposed, and as a dry etching gas for magnetic materials of difficult etching elements such as Pt and Ir, which proposes alcohol having at least one hydroxyl group, at least methane and Japanese Patent Laid-Open No. 2 0 0 5-2 6 8 3 4 9 proposes a gas containing oxygen. Disclosure of the invention
- the present invention relates to a mask material (non-organic material) formed of a non-organic material, for example, a metal atom of Group 3, Group 4, Group 5, or Group 6 of the periodic table or a material composed of these metal atom and non-metal atom.
- the purpose is to provide a dry etching process based on high-speed etching and a high selectivity without the need for after-corrosion treatment or anti-corrosion treatment for the etching apparatus.
- Another object of the present invention is to provide a method of manufacturing a magnetic element using the dry etching process.
- the present invention firstly provides at least one gasification compound selected from the group of gas compounds consisting of ethers, aldehydes, carboxylic acids, esters, diones and amines.
- a plasma atmosphere formed using a non-organic material mask including at least one metal selected from the group consisting of elements of Groups 8, 9, and 10 of the Periodic Table
- a method of manufacturing a magnetic element characterized by having an etching process for etching a magnetic film or a diamagnetic film.
- ethers a At least one gasified compound group and oxygen selected from the group of gasified compounds consisting of aldehydes, carboxylic acids, esters, diones and amines, ozone, nitrogen, H 2 0, N 2 0, N0 2
- a method of manufacturing a magnetic element comprising: an etching step of etching a magnetic film or a diamagnetic film containing at least one selected from the metal group consisting of the elements.
- the ethers may include at least one selected from the group consisting of dimethyl ether, jet ether and ethylene oxide.
- aldehydes at least one selected from the group of compounds consisting of formaldehyde and acetoaldehyde can be mentioned.
- examples of the carboxylic acids include at least one selected from the group consisting of formic acid and acetic acid.
- examples of the esters include at least one selected from a compound group consisting of a compound group consisting of ethyl chloroformate and ethyl acetate.
- examples of the amines include at least one selected from the group consisting of dimethylamine and triethylamine.
- examples of the diones include at least one selected from the group of compounds consisting of tetramethylheptadione, acetylacetone, and hexafluoroacetylacetone.
- the mask material (non-organic material mask) made of the non-organic material used in the present invention is, for example, Group 3, Group 4, Group 5, or Periodic Table such as Ta, Ti, A1, or Si.
- a non-organic material mask material consisting of a single layer film or laminated film formed of a group 6 metal atom or a substance obtained by mixing these metal atoms and non-metal atoms.
- the non-organic material mask used in the present invention may use, for example, a single-layer film or a laminated film of any of Ta, Ti, Al, or Si as a mask material. it can.
- T a, T i ', A l, or T a oxide is any oxides or nitrides of S i, T 1 oxide, A 1 2 0 A 1 oxide such as 3, S i A single-layer film or a laminated film such as Si oxide such as 0 2 , TaN, TiN, A 1 N, or SiN can be used as a mask material.
- the film thickness is 2 to 30 Onm, preferably 15 to 30 nm.
- the laminated film thickness is 2 to 30 Omn, preferably 15 to 3 Onm.
- a magnetic film or diamagnet made of at least one metal selected from the group of metals consisting of elements of Groups 8, 9 and 10 of the periodic table subjected to the etching process.
- Films are FeN film, NiFe film, CoFe film, CoFeB film, PtMn film, IrMn film, Cod CoCrPt film, NiFe Co film, NiFeMo film, 'CoFeB film, FeMn film, CoP t film, NiFeCr film, CoCrE, CoPd film CoFeB film or NiFeTb film can be used.
- These magnetic films or diamagnetic films may be ferromagnetic or soft magnetic.
- the magnetic substance contained in the magnetic film or diamagnetic film is preferably 10 atomic% or more, preferably 50 atomic% or more, but is not limited to this value.
- the magnetic film or diamagnetic film subjected to the etching step may be a single layer film or a laminated film.
- the film thickness is 2 to 30 Onm, preferably 15 to 30 nm.
- the laminated film thickness is 2 to 30 Onm, preferably 15 to 3 Onm.
- the etching temperature during etching of the magnetic film or diamagnetic film is preferably maintained within a range of 250 ° C. or lower. 2 50 ° C Exceeding this causes unnecessary thermal damage to the magnetic film.
- a more preferable temperature range of the present invention is 20 to 100 ° C.
- the degree of vacuum during etching is preferably in the range of 0.05 to 10 Pa. Within this pressure range, high-density plasma can be formed with good anisotropy.
- an oxidizing gas or nitriding gas such as oxygen, ozone, nitrogen, H 2 0, N 2 0, NO 2 and C 0 2 is added to the gasified compound. It can be added within a range not exceeding atomic percent.
- an inert gas in a range not exceeding 90 atomic% with respect to the gasified compound.
- the inert gas Ar, Ne, Xe, or Kr can be used.
- a mixed gas of the additive gas and the inert gas may be used. Also in this case, it is preferable to be within the range of the addition amount.
- the etching rate when the additive gas or the inert gas is added to the gasified compound within the above-described range, the etching rate can be further increased, and at the same time, the selectivity to the mask is greatly increased. Can be increased. In addition, if the additive gas is used in excess of 50 atomic%, the etching rate is reduced and the selectivity with respect to the non-organic material mask is also lowered.
- the dry etching method used in the manufacturing method of the present invention eliminates the need for after-corrosion treatment when etching a magnetic material using a mask material made of a non-organic material, and at the same time provides corrosion resistance to the etching apparatus. No special consideration is required.
- a high-speed etching rate and a large selection ratio can be achieved. With this high-speed etching rate and a large selection ratio, a magnetic thin film composed of a single layer film or a laminated film can be formed. High-level microfabrication could be realized, and this greatly improved the yield of manufacturing highly integrated MRAM.
- FIG. 1A is a schematic configuration diagram of an etching apparatus used in the method of the embodiment of the present invention
- FIG. 1B is a top view of the apparatus of FIG. 1A
- FIG. Fig. 2B is a schematic cross-sectional view of the wafer 18 before the start of the process.
- Fig. 2B is a schematic cross-sectional view of the Ta mask manufactured on the wafer 18 of Fig. 2A.
- FIG. 2C is a schematic cross-sectional view of an embodiment of the TMR element magnetic film produced by etching with the Ta mask of FIG. 2B.
- FIG. 3 shows another embodiment of the TMR element magnetic film of the present invention.
- 4 is a schematic cross-sectional view showing an example, FIG.
- FIG. 4 is a vertical cross-sectional view showing the basic structure of the TMR rectifier part manufactured according to the present invention
- FIG. 5 is a diagram showing resistance in the TMR element part manufactured according to the present invention. It is a figure explaining the change of a value.
- FIG. 1 is a schematic diagram of an etching apparatus equipped with an ICP (Inductive Coupled Plasma) plasma source.
- ICP Inductive Coupled Plasma
- acetic acid is used as a gasification compound, and a mixed gas of oxygen gas and this is used as an etching gas.
- a TMR element is used as shown in FIGS. 2A and 2B. Is to be etched.
- FIGS. 2C and 3 show two examples of TMR elements manufactured by the manufacturing method of the present invention.
- FIG. 2A shows the laminated structure before the etching process used in the present invention. This is the wafer 9 shown in FIG. 1A, in which a magnetic material layer or the like is laminated on a quartz substrate or the like, and is an object to be etched.
- 2 01 is & film
- 2 0 2 is 1 film
- 2 0 3 is Ta film
- 2 04 is pinned layer lnm ⁇ 20mn soft magnetic CoFe film (preferably film thickness 5 nm) and PtMn film, which is an antiferromagnetic film
- 205 is an insulating film formed of A1 20 3 (film thickness 0.1 nm to 10 nm, preferably 0.5 nm to 2 nm)
- 2 06 is a soft magnetic film formed of a CoFe film (preferably 5 nm thick) having a film thickness of 1 nm to 20 mn as a free layer
- 2 0 7 is a soft magnetic film formed of a NiFe film
- 2 0 8 is A mask formed of Ta
- 20 9 is a patterned photoresist film.
- FIGS. 4 shows the basic structure of a TMR element manufactured by the manufacturing method of the present invention.
- the basic structure of the TMR element 4 0 1 is the ferromagnetic layer 4 0 3 (NiFe film 2 in Fig. 2) on both sides of the insulating layer 4 0 2 (corresponding to the insulating film 2 0 5 in A1 2 0 3 in Fig. 2 ).
- 0 7 and CoFe film 2 06) and 4 0 4 (corresponding to CoFe / PtMn film 2 0 4 in Fig. 2).
- arrows 4 0 3 a and 4 0 4 a indicate the directions of magnetization.
- the TMR element 40 1 has a characteristic that the resistance value is changed according to the respective magnetization states of the ferromagnetic layers 4 0 3 and 4 0 4 according to the applied voltage V.
- FIG. 5A when the magnetization directions of the ferromagnetic layers 40 3 and 4 0 4 are the same, the resistance value of the TMR element 4 0 1 becomes minimum, and as shown in FIG. 5B When the magnetization directions of the ferromagnetic layers 40 3 and 4 0 4 are opposite to each other, the resistance value of the TMR element 4 0 1 is maximum.
- the minimum resistance value of the TMR element 4 0 1 is represented by R min and the maximum resistance value of the TMR element 4 0 1 is represented by Rmax.
- R min The minimum resistance value of the TMR element 4 0 1
- Rmax the maximum resistance value of the TMR element 4 0 1
- CIP Current-in-Plane
- CPP Current Perpendicular to Plane
- FIG. 2B shows a state after the Ta film is etched using the patterned photoresist film 20 09 shown in FIG. 1 and CF 4 gas as an etching gas.
- the apparatus shown in FIG. 1 was used.
- the vacuum vessel 2 shown in FIG. 1A is evacuated by the exhaust system 21 and the gate valve (not shown) is opened, and the wafer 9 provided with the magnetic layer film 'shown in FIG. Then, the wafer 9 was carried into the substrate holder 4 and held at the substrate holder 4, and the wafer 9 was maintained at a predetermined temperature by the temperature control mechanism 41.
- the gas introduction system 3 is operated, and a predetermined flow is supplied from a cylinder storing CF 4 gas (not shown in FIG.
- the plasma source device 1 includes a dielectric wall container 1 1 that is hermetically connected so that the internal space communicates with the vacuum vessel 2, and a one-turn generation that generates an induced magnetic field in the dielectric wall vessel 1 1.
- Antenna 1 2, high-frequency power supply 13 3 for plasma that is connected to antenna 1 2 via transmission line 15 via a matching unit (not shown) and generates high-frequency power (source power) to be supplied to antenna 1 2, and dielectric
- the body wall container 11 is composed of an electromagnet 14 and the like that generate a predetermined magnetic field.
- Fig. 1B shows the structure of the device as viewed from above.
- a large number of side wall magnets 22 are arranged outside the side wall of the vacuum vessel 2, and the magnetic poles on the surface facing the side wall of the vacuum vessel 2 are shown.
- the bias high-frequency power source 5 is operated to apply a self-bias voltage, which is a negative DC component voltage, to the wafer 9 that is the object to be etched, and the plasma is applied to the surface of the wafer 9.
- the ion incident energy is controlled.
- the plasma formed as described above diffuses from the dielectric wall container 11 into the vacuum container 2 and reaches the vicinity of the surface of the wafer 9.
- the Ta film not covered with the photoresist (PR) film 20 9 is exposed to the plasma and etched with the etching gas CF 4 , and the Ta film on the wafer 9 is Ta masked as shown in FIG. 2B. 2 0 8 are formed.
- Etching conditions for the Ta film using the photoresist film 20 9 using CF 4 as a mask were as follows.
- Etching conditions > Etching gas (CF 4 ) flow rate: 326 mg / min (50 sccm) Source power: 50 0 W
- N i F e film 20 7, C o F e film 206, a 1 2 0 3 film 20 5 ⁇ beauty C o F e BZP t Mn film 2 04 facilities the etching step of etching the magnetic illustrated in the 2 C Figure A membrane was produced.
- the apparatus shown in Fig. 1 was used, except that CF 4 gas was replaced with a mixed gas consisting of acetic acid gas and oxygen gas.
- the etching conditions at this time were as follows.
- the etching rate ( nm / min) at this time was measured by a conventional method. This result was 30 nm / min. Further, the selection ratio of the laminated films 204 to 207 with respect to the Ta film 203 (the etching rate of the laminated films 204 to 207 and the etching rate of the ZTa film 203) was measured by a conventional method. The result was 10.
- etching gas acetic acid
- the dry etching method used in the manufacturing method of the present invention has an unexpectedly remarkable effect.
- Fig. 2C The elements shown in Fig. 2C were created in the same way as those examples except that the flow ratio of the etching gas used in Examples 1, 9, 3, 6, 13 was changed. Speed and selectivity were measured. The results are shown in Table 2.
- the etching rates in Table 2 are the ratios when the etching rate of Example 1 is “1” and the selection ratio is [1].
- ethers Of ethers, aldehydes, carboxylic acids, diones and amines, ethers and aldehydes are particularly corrosive and are particularly advantageous for safety. ,
- the present invention is not limited to the above-described embodiments, and within the technical scope grasped from the description of the claims. It can be changed to various forms.
- the etching apparatus is not limited to the ICP type plasma apparatus having the one-turn antenna shown in FIG. 1, but a so-called high density plasma source called a helicon type plasma apparatus, a dual frequency excitation parallel plate type plasma apparatus, A wave type plasma apparatus or the like can be used.
- a magnetic material is etched using a non-organic material as a mask material, and the magnetic material is a TMR element, the configuration of the TMR element is limited to the configuration shown in FIG. Is not to be done.
- the present invention is not limited to the above-described TMR element, but can also be applied to a GMR element.
- the present invention can use a process in which the insulating film 205 shown in FIG. 2A is used as an etching stopper.
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Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020097020323A KR20100005058A (ko) | 2007-03-30 | 2007-03-30 | 자성소자 제조방법 |
| JP2009510643A JPWO2008129605A1 (ja) | 2007-03-30 | 2007-03-30 | 磁性素子の製造法 |
| PCT/JP2007/057689 WO2008129605A1 (ja) | 2007-03-30 | 2007-03-30 | 磁性素子の製造法 |
| CN200780052423A CN101641807A (zh) | 2007-03-30 | 2007-03-30 | 制造磁性器件的方法 |
| US12/556,987 US20100044340A1 (en) | 2007-03-30 | 2009-09-10 | Method of fabricating magnetic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2007/057689 WO2008129605A1 (ja) | 2007-03-30 | 2007-03-30 | 磁性素子の製造法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/556,987 Continuation US20100044340A1 (en) | 2007-03-30 | 2009-09-10 | Method of fabricating magnetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008129605A1 true WO2008129605A1 (ja) | 2008-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/057689 Ceased WO2008129605A1 (ja) | 2007-03-30 | 2007-03-30 | 磁性素子の製造法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100044340A1 (ja) |
| JP (1) | JPWO2008129605A1 (ja) |
| KR (1) | KR20100005058A (ja) |
| CN (1) | CN101641807A (ja) |
| WO (1) | WO2008129605A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014236096A (ja) * | 2013-05-31 | 2014-12-15 | セントラル硝子株式会社 | ドライエッチング方法、ドライエッチング装置、金属膜及びそれを備えたデバイス |
| JP2017123356A (ja) * | 2016-01-04 | 2017-07-13 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
| WO2018139276A1 (ja) * | 2017-01-24 | 2018-08-02 | 国立大学法人東北大学 | トンネル磁気抵抗素子の製造方法 |
| JP2019169724A (ja) * | 2019-05-08 | 2019-10-03 | 東京エレクトロン株式会社 | エッチング方法及びエッチング装置 |
| JP2019176051A (ja) * | 2018-03-29 | 2019-10-10 | 東京エレクトロン株式会社 | エッチング方法 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100301008A1 (en) * | 2009-05-27 | 2010-12-02 | Canon Anelva Corporation | Process and apparatus for fabricating magnetic device |
| KR20130005804A (ko) * | 2011-07-07 | 2013-01-16 | 삼성전자주식회사 | 자기 터널 접합 구조체의 제조 방법 |
| KR102082322B1 (ko) | 2013-08-09 | 2020-02-27 | 삼성전자주식회사 | 자기 기억 소자의 제조 방법 |
| JP6347695B2 (ja) * | 2013-11-20 | 2018-06-27 | 東京エレクトロン株式会社 | 被エッチング層をエッチングする方法 |
| US10249479B2 (en) * | 2015-01-30 | 2019-04-02 | Applied Materials, Inc. | Magnet configurations for radial uniformity tuning of ICP plasmas |
| JP6923881B2 (ja) * | 2016-06-20 | 2021-08-25 | 国立大学法人東北大学 | トンネル磁気抵抗素子及びその製造方法 |
| CN107958950B (zh) * | 2016-10-14 | 2020-09-22 | 中电海康集团有限公司 | Mtj器件的制作方法、mtj器件及stt-mram |
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| JP2006060044A (ja) * | 2004-08-20 | 2006-03-02 | Canon Anelva Corp | 磁気抵抗効果素子の製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014236096A (ja) * | 2013-05-31 | 2014-12-15 | セントラル硝子株式会社 | ドライエッチング方法、ドライエッチング装置、金属膜及びそれを備えたデバイス |
| JP2017123356A (ja) * | 2016-01-04 | 2017-07-13 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
| WO2018139276A1 (ja) * | 2017-01-24 | 2018-08-02 | 国立大学法人東北大学 | トンネル磁気抵抗素子の製造方法 |
| JPWO2018139276A1 (ja) * | 2017-01-24 | 2019-11-07 | 国立大学法人東北大学 | トンネル磁気抵抗素子の製造方法 |
| JP2019176051A (ja) * | 2018-03-29 | 2019-10-10 | 東京エレクトロン株式会社 | エッチング方法 |
| JP7223507B2 (ja) | 2018-03-29 | 2023-02-16 | 東京エレクトロン株式会社 | エッチング方法 |
| JP2019169724A (ja) * | 2019-05-08 | 2019-10-03 | 東京エレクトロン株式会社 | エッチング方法及びエッチング装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101641807A (zh) | 2010-02-03 |
| KR20100005058A (ko) | 2010-01-13 |
| JPWO2008129605A1 (ja) | 2010-07-22 |
| US20100044340A1 (en) | 2010-02-25 |
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