WO2005083148A1 - 表面欠陥の少ないスパッタリングターゲット及びその表面加工方法 - Google Patents
表面欠陥の少ないスパッタリングターゲット及びその表面加工方法 Download PDFInfo
- Publication number
- WO2005083148A1 WO2005083148A1 PCT/JP2005/002209 JP2005002209W WO2005083148A1 WO 2005083148 A1 WO2005083148 A1 WO 2005083148A1 JP 2005002209 W JP2005002209 W JP 2005002209W WO 2005083148 A1 WO2005083148 A1 WO 2005083148A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- target
- ductile
- sputtering target
- sputtering
- processing
- Prior art date
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Classifications
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
- C23C14/3414—Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49989—Followed by cutting or removing material
Definitions
- the present invention relates to a sputtering target having a small number of surface defects and a surface processing method thereof.
- the present invention relates to a sputtering target having few surface defects such as cracks, dents, and omissions on the target surface, and a method for surface sputtering of the target.
- the sputtering method is a widely known technique as a means for forming a thin film.
- the basic principle is that in a dilute gas such as argon, a voltage is applied between the substrate on which the thin film is formed (anode side) and a target (cathode side) that is also opposed to the thin film forming material by a small distance.
- the argon gas is converted into a plasma, and the argon ions generated there collide with the target, which is a cathode material, and the energy causes the target material to fly outside (push out), thereby causing the target material to fly out.
- the flying substance is laminated on the opposing substrate surface.
- a thin film forming apparatus utilizing the principle of sputtering has been devised in many ways, such as a bipolar bias sputtering apparatus, a high-frequency sputtering apparatus, and a plasma sputtering apparatus, but the basic principle is the same.
- the substance forming the thin film is referred to as a target because it becomes a target of argon ions.However, since it is based on the collision energy of ions, the thin film forming substance constituting the target is in an atomic state or its atoms are atomic. Since they are stacked on the substrate in a clustered form, they have the feature of forming fine and dense thin films, which is why they are widely applied to various electronic components today.
- Sputtering used for forming such a thin film has recently required a very advanced film forming method, and a major problem is that the formed thin film has few defects.
- the occurrence of such defects in sputtering is often caused not only by the sputtering method but also by the target itself.
- One of the causes of defects caused by such targets is the generation of particle / nodule.
- the force by which the material that originally sputtered (flies) from the target adheres to the opposing substrate is not always sputtered vertically, but flies in various directions.
- Such flying substances adhere to equipment in the sputtering equipment other than the substrate, but when they do, they come off and float, and they re-adhere to the substrate.
- the force that calls such a substance a particle is not a thin film substance originally planned, and often adheres in a large cluster shape. Therefore, for example, in a fine wiring film of an electronic device, a short circuit may occur. This causes defective products.
- the generation of such a particle is caused by the arrival of a substance from the target, that is, it increases or decreases depending on the surface condition of the target.
- a specific region for example, a ring is determined by a constituent material that cannot be uniformly reduced (eroded) by sputtering, a specific characteristic of a sputtering apparatus, a method of applying a voltage, and the like. Erosion.
- a material called V so-called nodule, in which a number of bumpy projecting materials remain on the target, may be formed.
- this is one of the thin film forming substances, it does not directly affect the thin film, but a small arc (micro arcing) is generated on the projection of this nodule, which causes particles to increase. Is observed.
- the nodule itself is a major obstacle. For this reason, the sputtering may be stopped to remove the nodules. This poses a problem when working efficiency is reduced.
- Patent Document 1 JP-A-3-257158
- Patent Document 2 JP-A-11-1766
- the present invention improves the surface of a target in which a large amount of intermetallic compounds, oxides, carbides, carbonitrides, and other non-ductile substances are present in a highly ductile matrix phase.
- An object of the present invention is to provide a nottering target with a small number of surface defects capable of preventing or suppressing the generation of particles, and a method for processing the surface thereof.
- the present invention provides: 1) a surface of a target in which an intermetallic compound, an oxide, a carbide, a carbonitride, and other non-ductile substances exist in a volume ratio of 1 to 50% in a ductile matrix phase.
- a sputtering target with few surface defects characterized by the absence of defects of 10 m or more caused by mechanical damage, 2) intermetallic compounds, oxides, carbides, A carbon nitride or another non-ductile material having a mean particle size of at least 0.5-50 ⁇ m in size; 1) a sputtering target according to 1); 3) a Vickers hardness of a ductile matrix phase.
- the present invention provides 4) an intermetallic compound, an oxide,
- the surface of the target which contains 1 to 50% by volume of carbonaceous materials, carbonitrides, and other non-ductile materials, must be subjected to primary force treatment by cutting in advance, followed by finishing force treatment by polishing.
- the method described in 4 wherein a range of lmm to 10mm is cut from the surface of the target material by primary processing by cutting, which is characterized by a small number of characteristic surface defects.
- the method described in 4) or 5 wherein the surface of the sputtering target is processed in a range of 1 ⁇ m to 50 ⁇ m from the surface after the primary processing by cutting using a polishing method.
- Sputtering target according to any one of 4) to 6 characterized in that it is polished using sandpaper or a whetstone with a coarse cannon of # 80- # 400.
- Method of surface sputtering of sputtering target according to any one of 7 9) High ductility.
- intermetallic compounds, oxides, carbides, carbonitrides and other non-ductile materials have a size of at least 0.5-50 ⁇ m in average particle size4)
- the Vickers hardness of the matrix phase with rich ductility is 400 or less, and intermetallic compounds, oxides, carbides, carbonitrides, etc.
- the Vickers hardness of a non-ductile material is 400 or more, and the hardness difference is at least 1.5 times.4)
- the surface treatment method for a sputtering target according to any one of 9), provide.
- the surface of a target in which an intermetallic compound, an oxide, a carbide, a carbonitride, and other non-ductile substances are present in a matrix phase having a high ductility in a volume ratio of 1 to 50% is prepared in advance.
- a target free of defects such as cracks, dents, omissions, etc. is obtained, and sputtering is performed using this target. Defects of m or more are substantially eliminated, the surface roughness is improved, and generation of particles and generation of nodules after use of the target are significantly reduced.
- the target to be subjected to the surface tension of the present invention is a matrix phase having a high ductility and a It is a target that contains 150% by volume of intermetallic compounds, oxides, carbides, carbonitrides, and other non-ductile materials.
- Such surface defects are likely to occur even when the non-ductile material portion is uniformly and finely dispersed to a size of 0.5 to 50 ⁇ m or more in average particle size.
- the Vickers hardness of the matrix phase having a high ductility was 400 or less, and the Vickers hardness of an intermetallic compound, an oxide, a carbide, a carbonitride, and other substances having no ductility was measured. That is, the difference in hardness is often 1.5 times.
- the surface processing method of the present invention is particularly effective.
- a primary force is preferably applied to cut a range of preferably lmm to 10mm from the surface of the target material by a primary force by cutting, and then a finishing force is effected by polishing.
- the reason for cutting the area of 1mm to 10mm is to effectively remove the defects on the surface of the target material formed before that.
- For cutting use a cutting tool or insert V. It is desirable to use a lathe.
- This grinding process causes defects such as cracks and pits due to falling out as described above. These defects can be removed by using, for example, # 80- # 400 coarse, gun sandpaper or grinding stone. Grind. As a result, the above-mentioned defects such as cracks and dents due to dropout are eliminated, and a smooth target surface is formed.
- # 80— # 400 coarse or cannon sandpaper or grindstone efficiently removes defects originating from intermetallic compounds, oxides, carbides, carbonitrides and other non-ductile materials generated by cutting However, it is the optimal range for producing a smooth surface, including a matrix phase with rich ductility. In this case, it is only necessary to remove the cracks and dents without the need for mirror polishing.
- the target material is initially # 80- # 400 coarse, gun sandpaper or whetstone. It is conceivable that the polishing is carried out by using. However, in this case, there is a problem that the time required for the polishing process is increased, and the material of the matrix having high ductility adheres to the grindstone, so that the maintenance frequency of the grindstone increases.
- the sputtering target obtained by subjecting the surface of the target of the present invention to primary force treatment by cutting in advance and then to finishing force treatment by polishing is 10 m or more, as shown in Examples described later. And the surface roughness is improved, and the generation of particles and the generation of nodules after use of the target are significantly reduced.
- primary processing was performed by cutting using a lathe, using a target manufactured from Co, Cr, Pt, and B under the manufacturing conditions of melting and rolling, and then performing # 280 sanding. Polishing was performed with paper for 10 minutes.
- Table 1 shows the defect density of 10 m or more, the average surface roughness, the number of nodules after use, the number of particles, and the surface processing conditions.
- FIGS. 1 and 2 show micrographs of the surface state of the target after grinding and the surface state of the target after polishing. In FIG. 1, many cracks and defects such as pits due to falling off are observed. However, no surface defects are observed in FIG. 2 after polishing.
- Example 1 0 1 .0 5 0 Less machining method 1
- Example 2 0 0 .4 4 5 Less machining method 1
- Comparative example 1 8 5 1.8 2 2 1 More machining method 2
- Comparative example 2 5 0 1.6 1 8 2 More processing methods 2
- Comparative example 3 3 0. 9 1 7 0 More processing methods 2 Comparative example 4 0. 4 4 2 Less processing method 3
- Processing method 1 Cutting + polishing
- Processing method 2 Cutting Only
- processing method 3 polishing only In Comparative Example 4, the polished surface of the target had undulations.
- Example 1 Using this target, sputtering was performed in the same manner as in Example 1, and the defect density of 10 m or more, the average surface roughness, the number of nodules after use, and the number of particles were examined. Table 1 also shows the results.
- the surface state of the target after grinding and the surface state of the target after polishing were observed with a microscope. On the surface of the target after the grinding process, many cracks and defects such as pits due to falling off are observed. However, in the polished target, as in Example 1, no surface defects were observed.
- Comparative Example 1 As in Example 1, primary processing by cutting using a lathe was performed using a target manufactured using Co, Cr, Pt, and B as raw materials under the manufacturing conditions of melting and rolling. The cut amount in this case is 0.5 mm. Thereafter, no polishing was performed. Using this target, sputtering was performed in the same manner as in Example 1, and the defect density of 10 m or more, the average surface roughness, the number of nodules after use, and the number of particles were examined. As a result Are also shown in Table 1.
- Comparative Example 2 the conditions were the same as in Comparative Example 1, except that the depth of cut when performing the primary force by cutting using a lathe was set at 0.1 lmm. Abrasive power has not been implemented.
- Example 1 Using this target, sputtering was performed in the same manner as in Example 1, and the defect density of 10 m or more, the average surface roughness, the number of nodules after use, and the number of particles were examined. Table 1 also shows the results.
- Comparative Example 3 the conditions were the same as those in Comparative Example 1 except that the depth of cut was 0.05 mm when the primary force was obtained by cutting using a lathe. Abrasive power has not been implemented.
- Example 1 Using this target, sputtering was performed in the same manner as in Example 1, and the defect density of 10 m or more, the average surface roughness, the number of nodules after use, and the number of particles were examined. Table 1 also shows the results.
- Comparative Example 4 Co, Cr, Pt, and B were used as raw materials and melted and rolled as in Example 1. Using the target manufactured under the manufacturing conditions, polishing by hand was performed from the beginning to finish with # 80, # 150, # 280, and # 400 j jet.
- the time required for the polishing process becomes enormous, and the material of the matrix, which is highly ductile, adheres to the munitions, so that the maintenance frequency of the munitions increases.
- the outer periphery and the central portion were polished more often, causing undulation on the target surface. The target was poor.
- the defect density of 10 m or more is 0 Zcm 2 , which is significantly reduced as compared with the comparative example. Also, the average surface roughness is improved as compared with the comparative example. It can also be seen that the number of nodules generated and the number of particles after using sputtering of the target, which are particularly problematic in the formation of a thin film, are significantly reduced.
- the surface treatment method using the cutting and polishing treatment according to the present invention employs a highly ductile matrix phase in which intermetallic compounds, oxides, carbides, carbonitrides, and other non-ductile substances are contained in a volumetric manner. It can be seen that it has an excellent effect on the surface of the target which is present at a ratio of 1 to 50%.
- a target free from defects such as cracks, dents, and omissions can be obtained by subjecting the surface of the target to primary force treatment by cutting in advance and then finishing the surface by polishing.
- Sputtering using this target has an excellent effect of significantly reducing the generation of particles and the generation of nodules after the use of the target, so that the intermetallic compound is particularly contained in a highly ductile matrix phase. It is effective for targets containing 1 to 50% by volume of oxides, carbides, carbonitrides and other non-ductile materials.
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/598,502 US7909949B2 (en) | 2004-03-01 | 2005-02-15 | Sputtering target with few surface defects, and surface processing method thereof |
CN200580006773.XA CN1926260B (zh) | 2004-03-01 | 2005-02-15 | 表面缺陷少的溅射靶及其表面加工方法 |
JP2006510397A JP4827033B2 (ja) | 2004-03-01 | 2005-02-15 | 表面欠陥の少ないスパッタリングターゲット及びその表面加工方法 |
US13/025,207 US8663402B2 (en) | 2004-03-01 | 2011-02-11 | Sputtering target with few surface defects, and surface processing method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-055989 | 2004-03-01 | ||
JP2004055989 | 2004-03-01 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/598,502 A-371-Of-International US7909949B2 (en) | 2004-03-01 | 2005-02-15 | Sputtering target with few surface defects, and surface processing method thereof |
US13/025,207 Continuation US8663402B2 (en) | 2004-03-01 | 2011-02-11 | Sputtering target with few surface defects, and surface processing method thereof |
Publications (1)
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WO2005083148A1 true WO2005083148A1 (ja) | 2005-09-09 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/002209 WO2005083148A1 (ja) | 2004-03-01 | 2005-02-15 | 表面欠陥の少ないスパッタリングターゲット及びその表面加工方法 |
Country Status (6)
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US (2) | US7909949B2 (ja) |
JP (1) | JP4827033B2 (ja) |
CN (1) | CN1926260B (ja) |
MY (1) | MY153650A (ja) |
TW (1) | TW200540285A (ja) |
WO (1) | WO2005083148A1 (ja) |
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JP4885142B2 (ja) * | 2005-10-20 | 2012-02-29 | 独立行政法人科学技術振興機構 | 質量分析法に用いられる試料ターゲットおよびその製造方法、並びに当該試料ターゲットを用いた質量分析装置 |
WO2013001943A1 (ja) * | 2011-06-30 | 2013-01-03 | Jx日鉱日石金属株式会社 | Co-Cr-Pt-B系合金スパッタリングターゲット及びその製造方法 |
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US20070017803A1 (en) * | 2005-07-22 | 2007-01-25 | Heraeus, Inc. | Enhanced sputter target manufacturing method |
US20070215463A1 (en) * | 2006-03-14 | 2007-09-20 | Applied Materials, Inc. | Pre-conditioning a sputtering target prior to sputtering |
KR101086661B1 (ko) * | 2007-02-09 | 2011-11-24 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | 고융점 금속 합금, 고융점 금속 규화물, 고융점 금속 탄화물, 고융점 금속 질화물 혹은 고융점 금속 붕소화물의 난소결체로 이루어지는 타겟 및 그 제조 방법 그리고 동스퍼터링 타겟-백킹 플레이트 조립체 및 그 제조 방법 |
US8568576B2 (en) * | 2008-03-28 | 2013-10-29 | Jx Nippon Mining & Metals Corporation | Sputtering target of nonmagnetic-particle-dispersed ferromagnetic material |
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2005
- 2005-02-15 CN CN200580006773.XA patent/CN1926260B/zh active Active
- 2005-02-15 US US10/598,502 patent/US7909949B2/en active Active
- 2005-02-15 JP JP2006510397A patent/JP4827033B2/ja active Active
- 2005-02-15 WO PCT/JP2005/002209 patent/WO2005083148A1/ja active Application Filing
- 2005-02-21 TW TW094105015A patent/TW200540285A/zh unknown
- 2005-02-25 MY MYPI20050762A patent/MY153650A/en unknown
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2011
- 2011-02-11 US US13/025,207 patent/US8663402B2/en active Active
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JP4885142B2 (ja) * | 2005-10-20 | 2012-02-29 | 独立行政法人科学技術振興機構 | 質量分析法に用いられる試料ターゲットおよびその製造方法、並びに当該試料ターゲットを用いた質量分析装置 |
WO2009123055A1 (ja) * | 2008-04-03 | 2009-10-08 | 日鉱金属株式会社 | パーティクルの発生の少ないスパッタリングターゲット |
JP5301531B2 (ja) * | 2008-04-03 | 2013-09-25 | Jx日鉱日石金属株式会社 | パーティクルの発生の少ないスパッタリングターゲット |
TWI447248B (zh) * | 2008-04-03 | 2014-08-01 | Jx Nippon Mining & Metals Corp | Reduced particle sputtering targets |
US9328412B2 (en) * | 2010-08-31 | 2016-05-03 | Jx Nippon Mining & Metals Corporation | Fe—Pt-based ferromagnetic material sputtering target |
US20130168240A1 (en) * | 2010-08-31 | 2013-07-04 | Jx Nippon Mining & Metals Corporation | Fe-Pt-Based Ferromagnetic Material Sputtering Target |
CN103620083A (zh) * | 2011-06-30 | 2014-03-05 | 吉坤日矿日石金属株式会社 | Co-Cr-Pt-B型合金溅射靶及其制造方法 |
JP2013231236A (ja) * | 2011-06-30 | 2013-11-14 | Jx Nippon Mining & Metals Corp | Co−Cr−Pt−B系合金スパッタリングターゲット及びその製造方法 |
JP5654126B2 (ja) * | 2011-06-30 | 2015-01-14 | Jx日鉱日石金属株式会社 | Co−Cr−Pt−B系合金スパッタリングターゲット及びその製造方法 |
JP2015061946A (ja) * | 2011-06-30 | 2015-04-02 | Jx日鉱日石金属株式会社 | Co−Cr−Pt−B系合金スパッタリングターゲット及びその製造方法 |
JP2015061945A (ja) * | 2011-06-30 | 2015-04-02 | Jx日鉱日石金属株式会社 | Co−Cr−Pt−B系合金スパッタリングターゲット及びその製造方法 |
JP2015071827A (ja) * | 2011-06-30 | 2015-04-16 | Jx日鉱日石金属株式会社 | Co−Cr−Pt−B系合金スパッタリングターゲット及びその製造方法 |
WO2013001943A1 (ja) * | 2011-06-30 | 2013-01-03 | Jx日鉱日石金属株式会社 | Co-Cr-Pt-B系合金スパッタリングターゲット及びその製造方法 |
JPWO2013133163A1 (ja) * | 2012-03-09 | 2015-07-30 | Jx日鉱日石金属株式会社 | 磁気記録媒体用スパッタリングターゲット及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070125645A1 (en) | 2007-06-07 |
CN1926260A (zh) | 2007-03-07 |
CN1926260B (zh) | 2010-10-06 |
MY153650A (en) | 2015-03-13 |
JPWO2005083148A1 (ja) | 2008-04-24 |
TW200540285A (en) | 2005-12-16 |
JP4827033B2 (ja) | 2011-11-30 |
TWI346712B (ja) | 2011-08-11 |
US7909949B2 (en) | 2011-03-22 |
US8663402B2 (en) | 2014-03-04 |
US20110132757A1 (en) | 2011-06-09 |
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