WO2016133047A1 - 磁性体薄膜形成用スパッタリングターゲット - Google Patents
磁性体薄膜形成用スパッタリングターゲット Download PDFInfo
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- WO2016133047A1 WO2016133047A1 PCT/JP2016/054300 JP2016054300W WO2016133047A1 WO 2016133047 A1 WO2016133047 A1 WO 2016133047A1 JP 2016054300 W JP2016054300 W JP 2016054300W WO 2016133047 A1 WO2016133047 A1 WO 2016133047A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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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
- 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
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- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/851—Coating a support with a magnetic layer by sputtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
Definitions
- the present invention relates to a magnetic material sputtering target used to form a magnetic thin film of a magnetic recording medium, particularly a granular film in a magnetic recording medium of a hard disk adopting a perpendicular magnetic recording method, and suppresses generation of particles during sputtering.
- the present invention relates to a non-magnetic material particle-dispersed magnetic material sputtering target mainly composed of Co or Fe.
- a material based on Co or Fe which is a ferromagnetic metal, is used for a recording layer of a hard disk adopting a perpendicular magnetic recording system.
- Co—Cr-based, Co—Pt, Co—Cr—Pt-based, and Fe—Pt-based alloys composed mainly of ferromagnetic metals and non-magnetic inorganic materials are often used. Yes.
- the magnetic thin film of such magnetic recording media, such as a hard disk is often produced by sputtering a sputtering target containing the above material as a component because of high productivity.
- a melting method or a powder metallurgy method can be considered as a method for producing a sputtering target for a magnetic recording medium. Which method is used depends on the required characteristics, but it cannot be unequivocally stated, but it is used for the recording layer of hard disks of the perpendicular magnetic recording system, an alloy mainly composed of a ferromagnetic metal and a non-magnetic inorganic substance.
- Sputtering targets made of particles are generally produced by powder metallurgy. This is because inorganic particles such as boron oxide need to be uniformly dispersed in the alloy base, and thus it is difficult to produce by the melting method.
- Patent Document 1 states that “a magnetic recording medium having a magnetic data recording layer, wherein the magnetic data recording layer has a magnetic anisotropy of at least 0.5 ⁇ 10 7 erg / cm 3 (0.5 / Jcm 3 ).
- a magnetic recording medium comprising: a first alloy having a sex constant; and an oxide compound comprising oxygen and one or more elements in which at least one element has a negative reduction potential ” Yes.
- the oxide compound there is a description of boron oxide, but there is no description about the problem of the presence of boron oxide in the target and a solution to the problem.
- a target used for forming a Co-based magnetic layer of a magnetic recording medium by a sputtering method contains 5 mol% or more of Cr or Cr alloy, and contains 5 mol% or more of CoO
- a target characterized by comprising oxides having a melting point of 800 ° C. or lower in a total range of 3 to 20 mol% and a porosity of 7% or lower a target having a melting point of 800 ° C. or lower.
- oxides having a melting point of 800 ° C. or lower As the product, boron oxide and the like are described. Also in this case, as in the case of the above-mentioned document 1, there is no description about the problem of the presence of boron oxide in the sintered body or the target made of the sintered body and the solution to the problem.
- Patent Document 3 states that “a sintered sputtering target composed of a ferromagnetic alloy having a Cr content of 20 mol% or less and the balance of Co and a non-metallic inorganic material, and the volume ratio occupied by the non-metallic inorganic material is 40 vol% or less.
- the sputtering target is characterized in that the non-metallic inorganic material contains at least cobalt oxide and boron oxide. Also in this case, it is described that “boron oxide” is contained, as in the above-mentioned documents 1 and 2. However, the problem of the presence of boron oxide in the target and a solution to the problem are not described at all. There is no.
- Patent Document 4 describes “a sputtering target for a magnetic recording film containing SiO 2 and containing 10 to 1000 wtppm of B (boron)”. .
- boron oxide is also included.
- the problem of the presence of boron oxide in the sintered body or the target composed of the sintered body there is no mention of any method.
- boron oxide For sputtering targets for magnetic recording films, composite materials composed of ferromagnetic alloys and non-magnetic materials are often used, and oxides are known as non-magnetic materials. Boron (B 2 O 3 ) is added. However, in the target to which boron oxide is added, there is a problem that the particles of boron oxide become large after sintering. On the other hand, if the sintering temperature is lowered to suppress this grain growth, the density cannot be increased, and the particles are There was a problem of many occurrences. Further, since boron oxide has a low melting point, it begins to melt during sputtering, which is considered to be the starting point of arcing and generate particles.
- the present applicant has previously added at least one compound (composite oxide) of CrBO 3 , Co 2 B 2 O 5 , and Co 3 B 2 O 6 as a boron oxide.
- composite oxide composite oxide
- boron oxide might exist in the target, which caused particles to be generated.
- a sputtering target containing an alloy containing Co and boron and / or an oxide of boron, and the amount of metallic boron in boron oxide (B 2 O 3 ) dissolved in water is 7000 ⁇ g / m 2 or less.
- the sputtering target characterized by being. 2) The sputtering target according to 1) above, which contains boron at 0.5 at% or more and 15 at% or less. 3) The sputtering target according to 1) or 2) above, which contains an oxide containing one or more elements selected from Ti, Si, Co, Cr, and Mn as constituent components. 4) It contains one or more metals selected from Ti, V, Mn, Zr, Nb, Mo, Ta, W, Ru, and Pt, and the total content of the metal elements is 0.5 at% to 30 at% The sputtering target according to any one of 1) to 3) above, wherein
- the non-magnetic material particle dispersion type magnetic material sputtering target of the present invention prepared as described above can remarkably suppress particle generation due to dissolution of boron oxide (B 2 O 3 ) during sputtering. This has a great effect of reducing the defect rate of the magnetic recording film and reducing the cost, and can greatly contribute to the improvement of the quality and production efficiency of the magnetic thin film.
- boron oxide B 2 O 3
- the sputtering target of the present invention has a structure in which oxide particles containing at least boron are dispersed as a nonmagnetic material in an alloy containing Co or Fe.
- the Co-containing alloy include ferromagnetic alloys such as a Co—Cr alloy, a Co—Pt alloy, and a Co—Cr—Pt alloy.
- ferromagnetic alloys such as a Co—Cr alloy, a Co—Pt alloy, and a Co—Cr—Pt alloy.
- 0.5 at% or more and 10 at% or less of at least one metal selected from Ti, V, Mn, Zr, Nb, Mo, Ta, W, Ru, and Pt is contained. It is valid.
- the sputtering target of the present invention contains metal boron and / or an oxide of boron. Even when metal boron is added, it may be oxidized after that to form B 2 O 3 , and even when a composite oxide containing boron and another metal is added, B 2 O 3 may be formed.
- the present invention is characterized in that the metal boron in boron oxide (B 2 O 3 ) dissolved in water is 7000 ⁇ g / m 2 or less.
- the amount of metal boron dissolved in water was measured by measuring the amount of metal boron in the boron oxide per ⁇ g of the target pulverized powder ( ⁇ g / g), and calculating the amount of leaching of the pulverized powder.
- the amount of metallic boron in boron oxide (B 2 O 3 ) dissolved in water can be measured as follows. First, the surface of the sputtering target is dry-processed to collect chips (1 to 5 g). It is desirable to collect the chips from a surface that is not covered with an oxide film on the surface of the target and that is not in contact with a solvent such as water or ethanol. The chips are pulverized until the specific surface area becomes 0.05 to 1.00 m 2 / g. If the specific surface area is less than 0.05 m 2 / g, the oxide may not be sufficiently exposed on the surface. If the specific surface area exceeds 1.00 m 3 / g, the powder adheres to the pulverizer and is difficult to recover. Become.
- the crushing device is preferably a closed crushing device so that the powder does not scatter.
- the specific surface area can be measured using a specific surface area measuring device (Spectris Co., Ltd., Malvern Division Monosorb).
- 1 g of this pulverized powder is immersed in 50 to 100 cc of water at room temperature. Since the solubility of B 2 O 3 is 0.028 g / cc, if water is 50 cc or more, B 2 O 3 is not saturated. On the other hand, if it exceeds 100 cc of water, the B concentration becomes thin and analysis becomes difficult.
- the amount of metal boron in boron oxide (B 2 O 3 ) dissolved in water can be measured using ICP (SPS3500DD manufactured by Hitachi High-Tech Science Co., Ltd.) with respect to the water thus leached.
- Boron is preferably contained in an amount of 0.5 at% to 15 at% with respect to the composition of the sputtering target. Boron exists as a single metal, an alloy, or an oxide component, and if the content is less than 0.5 at% or more than 15 at%, it is difficult to obtain desired magnetic properties.
- the content of boron and the above-mentioned added metals (Ti, V, Mn, etc.) can be measured using an ICP-AES apparatus by dissolving chips collected from a sputtering target (sintered body) with an acid.
- a well-known oxide can be contained as a nonmagnetic material, for example, the oxide which has 1 or more types of elements selected from Ti, Si, Co, Cr, and Mn as a structural component is mentioned.
- the sputtering target of the present invention can be produced by a powder metallurgy method.
- metal powder not only a single element metal powder but also an alloy powder can be used.
- the metal powder is larger than 10 ⁇ m, the oxide phase may not be finely dispersed.
- the influence of the oxidation of the metal powder may be a problem.
- the boron oxide it is preferable to use a composite oxide obtained by previously synthesizing B 2 O 3 and another oxide (Cr 2 O 3 , TiO 2 , etc.) as a raw material powder.
- a composite oxide having a relatively high melting point such as CrBO 3 , Co 2 B 2 O 5 , Co 3 B 2 O 6 , Mn 3 B 2 O 6 , TiBO 3 may be used as a raw material powder. It can.
- B 2 O 3 it is also possible to use B 2 O 3 as a raw material. In that case, it is necessary to form a composite oxide with other oxides during sintering by adjusting the sintering temperature.
- TiBO 3 powder may be obtained by mixing, synthesizing and pulverizing Ti 2 O 3 powder and B 2 O 3 powder.
- CrBO 3 Co 2 B 2 O 5 , Co 3 B 2 O 6 , and Mn 3 B 2 O 6 powder
- Cr 2 O 3 , CoO, MnO powder and B 2 O 3 powder are mixed and synthesized.
- the pulverized product can be used.
- the average particle diameter of this oxide powder is desirably in the range of 0.2 to 5 ⁇ m.
- the particle size is 0.2 to 5 ⁇ m, there is an advantage that uniform mixing with the metal powder is facilitated.
- the average particle diameter of the oxide powder is larger than 5 ⁇ m, a coarse oxide phase may be formed after sintering, and when smaller than 0.2 ⁇ m, the oxide powder may be aggregated. is there.
- the raw material powder is weighed so as to have a desired composition, and mixed using a known method such as a ball mill for pulverization. In order to shorten the mixing time and increase the productivity, it is preferable to use a high energy ball mill.
- the mixed powder thus obtained is molded and sintered in a vacuum atmosphere or an inert gas atmosphere by a hot press method.
- various pressure sintering methods such as a plasma discharge sintering method can be used.
- the hot isostatic pressing is effective for improving the density of the sintered body.
- the sintering temperature is often in the range of 700 ° C. to 1400 ° C.
- B 2 O 3 is used as the raw material powder, it must be in the range of 1000 to 1400 ° C.
- the obtained sintered body is processed into a desired shape with a lathe, and the surface is cut and polished, whereby the sputtering target of the present invention can be produced.
- the sputtering target manufactured in this manner can significantly reduce the amount of particles generated during sputtering, and thus has an excellent effect of improving the yield during film formation.
- Co powder, Cr powder, and Pt powder were prepared as metal powders, and Co 3 TiB 2 O 8 powder, SiO 2 powder, and CoO powder were prepared as non-magnetic material powders.
- Co 3 TiB 2 O 8 powder a CoO powder, a TiO 2 powder and a B 2 O 3 powder mixed, synthesized, and pulverized in advance were used. Then, 2000 g of these powders were weighed at the following composition ratio.
- the weighed powder was enclosed in a ball mill pot with a capacity of 10 liters together with a tungsten alloy ball as a grinding medium, and rotated and mixed for 120 hours.
- the mixed powder thus obtained was filled in a carbon mold and hot-pressed in a vacuum atmosphere at a temperature of 980 ° C., a holding time of 2 hours, and a pressure of 30 MPa to obtain a sintered body. Further, this was cut with a lathe to obtain a disk-shaped sputtering target having a diameter of 164 mm and a thickness of 4 mm.
- the surface of the sputtering target was turned to collect chips, and the chips were pulverized so that the specific surface area was 0.05 m 2 / g or more.
- the specific surface area of this pulverized powder was 0.33 m 2 / g.
- this sputtering target was attached to a DC magnetron sputtering apparatus, and sputtering was performed.
- the sputtering conditions were a sputtering power of 1.0 kW and an Ar gas pressure of 3.2 Pa, and sputtering was performed on a 4-inch diameter silicon substrate for 20 seconds.
- the number of particles adhering to the substrate was measured with a particle counter. At this time, the number of particles on the silicon substrate was an extremely small level of 2 on average. The results are shown in Table 1.
- Co powder and Pt powder were prepared as metal powders
- CrBO 3 powder, TiBO 3 powder, TiO 2 powder, and Co 3 O 4 powder were prepared as non-magnetic material powders.
- CrBO 3 powder Cr 2 O 3 powder and B 2 O 3 powder are mixed, synthesized, and pulverized in advance.
- TiBO 3 powder Ti 2 O 3 powder and B 2 O 3 powder are mixed, synthesized, and pulverized. We used what we did. Then, 2000 g of these powders were weighed at the following composition ratio. Then, after mixing the weighed powder using the method similar to Example 1, it hot-pressed and the sputtering target which cut the obtained sintered compact was obtained.
- Example 3 Co powder, Cr powder, and Pt powder were prepared as metal powders, and CrBO 3 powder, Mn 3 B 2 O 6 powder, CoO powder, and SiO 2 powder were prepared as non-magnetic material powders.
- Example 4 Co powder and Pt powder were prepared as metal powders, and B 2 O 3 powder, Cr 2 O 3 powder, CoO powder, and SiO 2 powder were prepared as non-magnetic material powders. Then, 2000 g of these powders were weighed at the following composition ratio. Thereafter, the weighed powder was mixed using the same method as in Example 1, and then hot pressed at 1300 ° C. to obtain a sputtering target obtained by cutting the obtained sintered body. Composition (at%): Co-6.25Cr-7.81Pt-2.34B-0.78Si-18.75O
- this sputtering target was sputtered under the same conditions as in Example 1. As a result, the number of particles was at an extremely low level of 6 on average.
- Co powder, Pt powder, and B powder were prepared as metal powders, and TiO 2 powder, SiO 2 powder, and CoO powder were prepared as non-magnetic material powders. Then, 2000 g of these powders were weighed at the following composition ratio. Then, after mixing the weighed powder using the method similar to Example 1, it hot-pressed and the sputtering target which cut the obtained sintered compact was obtained. Composition (at%): Co-15.57Pt-3.28B-4.92Ti-1.64Si-18.03O
- Co powder, Pt powder, and B powder were prepared as metal powders, and TiO 2 powder, SiO 2 powder, and Co 3 O 4 powder were prepared as non-magnetic material powders. Then, 2000 g of these powders were weighed at the following composition ratio. Then, after mixing the weighed powder using the method similar to Example 1, it hot-pressed and the sputtering target which cut the obtained sintered compact was obtained. Composition (at%): Co-14.75Pt-4.92B-2.46Ti-1.64Si-14.75O
- Co powder, Pt powder, and B powder were prepared as metal powders, and CrBO 3 powder, TiO 2 powder, SiO 2 powder, and CoO powder were prepared as non-magnetic material powders. Then, 2000 g of these powders were weighed at the following composition ratio. Then, after mixing the weighed powder using the method similar to Example 1, it hot-pressed and the sputtering target which cut the obtained sintered compact was obtained. Composition (at%): Co-1.14Cr-11.36Pt-4.55B-1.52Ti-3.03Si-21.97O
- Co powder and Pt powder were prepared as metal powders, and B 2 O 3 powder, SiO 2 powder, Cr 2 O 3 powder and CoO powder were prepared as non-magnetic material powders. Then, 2000 g of these powders were weighed at the following composition ratio. Then, after mixing the weighed powder using the method similar to Example 1, it hot-pressed and the sputtering target which cut the obtained sintered compact was obtained. Composition (at%): Co-6.25Cr-7.81Pt-2.34B-0.78Si-18.75O
- FIG. 1 shows the relationship between the boron leaching amount and the number of particles of the sputtering targets in the above examples and comparative examples. As shown in FIG. 1, there is a correlation between the amount of leaching of boron and the number of particles, and by appropriately adjusting the presence form and amount of boron (oxide) in the target, a target with less generation of particles is obtained. It was shown that it can.
- the present invention by controlling the form of boron present in the sputtering target, the generation of particles due to the dissolution of B 2 O 3 during sputtering can be remarkably suppressed, so the defect rate of the magnetic recording film is reduced. It has an excellent effect of reducing the cost and reducing the cost.
- the present invention is useful as a ferromagnetic sputtering target used for forming a magnetic thin film of a magnetic recording medium, particularly a hard disk drive recording layer.
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Abstract
Description
1)Coを含有する合金と、ホウ素及び/又はホウ素の酸化物とを含むスパッタリングターゲットであって、水に溶けだす酸化ホウ素(B2O3)中の金属ホウ素の量が7000μg/m2以下であることを特徴とするスパッタリングターゲット。
2)ホウ素を0.5at%以上15at%以下含有することを特徴とする上記1)記載のスパッタリングターゲット。
3)Ti、Si、Co、Cr、Mnから選択した一種以上の元素を構成成分とする酸化物を含有することを特徴とする上記1)又は2)記載のスパッタリングターゲット。
4)Ti、V、Mn、Zr、Nb、Mo、Ta、W、Ru、Ptから選択した1元素以上の金属を含有し、前記金属元素の総含有量が0.5at%以上30at%以下であることを特徴とする上記1)~3)のいずれか一に記載のスパッタリングターゲット。
本発明は、水に溶けだす酸化ホウ素(B2O3)中の金属ホウ素が7000μg/m2以下であることを特徴とする。ここで、水に溶けだす金属ホウ素の量は、ターゲットの粉砕粉1.0gあたりの酸化ホウ素中の金属ホウ素の水への浸出量(μg/g)を測定し、この浸出量を粉砕粉の比表面積(m2/g)で除した値(μg/m2)と定義する。なお、粉末の比表面積が大きくなる(粒径が小さくなる)ほど、金属ホウ素の水への浸出量が多くなるため、規格化のため比表面積で除している。
次に、この粉砕粉1gを、常温の水50~100ccに浸す。B2O3の溶解度は0.028g/ccであるため、水50cc以上であれば、B2O3は飽和しない。一方、水100cc超であると、B濃度が薄くなり分析しにくくなる。このようにして浸出させた水に対して、ICP(日立ハイテクサイエンス社製 SPS3500DD)を用いて、水に溶けだした酸化ホウ素(B2O3)中の金属ホウ素の量を測定することができる。
また、非磁性材料として公知の酸化物を含有することができ、例えば、Ti、Si、Co、Cr、Mnから選択した一種以上の元素を構成成分とする酸化物が挙げられる。
なお、例えば、TiBO3粉末は、Ti2O3粉末とB2O3粉末とを混合、合成、粉砕したものを使用することができる。同様に、CrBO3、Co2B2O5、Co3B2O6、Mn3B2O6粉末についても、Cr2O3、CoO、MnO粉末とB2O3粉末とを混合、合成、粉砕したものを使用することができる。
金属粉末として、Co粉末、Cr粉末、Pt粉末を、非磁性材粉末として、Co3TiB2O8粉末、SiO2粉末、CoO粉末を、用意した。Co3TiB2O8粉末については、予め、CoO粉末、TiO2粉末とB2O3粉末を混合、合成、粉砕したものを使用した。そして、これらの粉末を以下の組成比で2000g秤量した。
組成(at%):Co-1.17Cr-11.72Pt-3.13B-1.56Ti-3.13Si-20.31O
金属粉末として、Co粉末、Pt粉末を、非磁性材粉末として、CrBO3粉末、TiBO3粉末、TiO2粉末、Co3O4粉末を用意した。CrBO3粉末については予め、Cr2O3粉末、B2O3粉末を混合、合成、粉砕したもの、TiBO3粉末については、Ti2O3粉末とB2O3粉末を混合、合成、粉砕したものを使用した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-1.19Cr-11.90Pt-3.17B-2.38Ti-15.87O
金属粉末として、Co粉末、Cr粉末、Pt粉末を、非磁性材粉末として、CrBO3粉末、Mn3B2O6粉末、CoO粉末、SiO2粉末を用意した。Mn3B2O6粉末については、予め、MnO粉末、B2O3粉末を混合、合成、粉砕したものを使用した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-3.2Cr-12.4Pt-3.20B-2.40Mn-1.60Si-18.40O
金属粉末として、Co粉末、Pt粉末を、非磁性材粉末として、B2O3粉末、Cr2O3粉末、CoO粉末、SiO2粉末を用意した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、1300℃でホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-6.25Cr-7.81Pt-2.34B-0.78Si-18.75O
金属粉末として、Co粉末、Pt粉末、B粉末を、非磁性材粉末として、TiO2粉末、SiO2粉末、CoO粉末を用意した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-15.57Pt-3.28B-4.92Ti-1.64Si-18.03O
金属粉末として、Co粉末、Pt粉末、B粉末を、非磁性材粉末として、TiO2粉末、SiO2粉末、Co3O4粉末を用意した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-14.75Pt-4.92B-2.46Ti-1.64Si-14.75O
金属粉末として、Co粉末、Pt粉末、B粉末を、非磁性材粉末として、CrBO3粉末、TiO2粉末、SiO2粉末、CoO粉末を用意した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-1.14Cr-11.36Pt-4.55B-1.52Ti-3.03Si-21.97O
金属粉末として、Co粉末、Pt粉末を、非磁性材粉末として、B2O3粉末、SiO2粉末、Cr2O3粉末、CoO粉末を用意した。そして、これらの粉末を以下の組成比で2000g秤量した。その後、秤量した粉末を実施例1と同様の方法を用いて混合した後、ホットプレスして、得られた焼結体を切削加工したスパッタリングターゲットを得た。
組成(at%):Co-6.25Cr-7.81Pt-2.34B-0.78Si-18.75O
Claims (4)
- Coを含有する合金と、ホウ素及び/又はホウ素の酸化物とを含むスパッタリングターゲットであって、水に溶けだす酸化ホウ素(B2O3)中の金属ホウ素が7000μg/m2以下であることを特徴とするスパッタリングターゲット。
- ホウ素及び/又はホウ素の酸化物を0.5at%以上、15at%以下含有することを特徴とする請求項1記載のスパッタリングターゲット。
- Ti、Si、Co、Cr、Mnから選択した一種以上の元素を構成成分とする酸化物を含有することを特徴とする請求項1又は2記載のスパッタリングターゲット。
- Ti、V、Mn、Zr、Nb、Mo、Ta、W、Ru、Ptから選択した1元素以上の金属を含有し、前記金属元素の総含有量が0.5at%以上30at%以下であることを特徴とする請求項1~3のいずれか一項に記載のスパッタリングターゲット。
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| JP2017500665A JP6445126B2 (ja) | 2015-02-19 | 2016-02-15 | 磁性体薄膜形成用スパッタリングターゲット |
| SG11201706389UA SG11201706389UA (en) | 2015-02-19 | 2016-02-15 | Sputtering target for forming magnetic thin film |
| CN201680006176.5A CN108026631B (zh) | 2015-02-19 | 2016-02-15 | 磁性体薄膜形成用溅射靶 |
| MYPI2017702985A MY184033A (en) | 2015-02-19 | 2016-02-15 | Sputtering target for forming magnetic thin film |
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| WO2018083951A1 (ja) * | 2016-11-01 | 2018-05-11 | 田中貴金属工業株式会社 | 磁気記録媒体用スパッタリングターゲット |
| CN112739846A (zh) * | 2018-09-25 | 2021-04-30 | Jx金属株式会社 | 溅射靶以及用于制造溅射靶的粉体 |
| JP7625110B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625113B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625112B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625111B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625109B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
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| CN110171972B (zh) * | 2019-01-04 | 2021-10-22 | 南京汇聚新材料科技有限公司 | 一种低温烧结陶瓷材料 |
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- 2016-02-15 WO PCT/JP2016/054300 patent/WO2016133047A1/ja not_active Ceased
- 2016-02-15 MY MYPI2017702985A patent/MY184033A/en unknown
- 2016-02-15 JP JP2017500665A patent/JP6445126B2/ja active Active
- 2016-02-15 SG SG11201706389UA patent/SG11201706389UA/en unknown
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| WO2018083951A1 (ja) * | 2016-11-01 | 2018-05-11 | 田中貴金属工業株式会社 | 磁気記録媒体用スパッタリングターゲット |
| US10971181B2 (en) | 2016-11-01 | 2021-04-06 | Tanaka Kikinzoku Kogyo K.K. | Sputtering target for magnetic recording media |
| CN112739846A (zh) * | 2018-09-25 | 2021-04-30 | Jx金属株式会社 | 溅射靶以及用于制造溅射靶的粉体 |
| JP7625110B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625113B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625112B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625111B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP7625109B1 (ja) | 2024-03-29 | 2025-01-31 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP2025154879A (ja) * | 2024-03-29 | 2025-10-10 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP2025154895A (ja) * | 2024-03-29 | 2025-10-10 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP2025154883A (ja) * | 2024-03-29 | 2025-10-10 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP2025154900A (ja) * | 2024-03-29 | 2025-10-10 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
| JP2025154891A (ja) * | 2024-03-29 | 2025-10-10 | Jx金属株式会社 | 磁性材ターゲット及び磁性材ターゲット組立品 |
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| Publication number | Publication date |
|---|---|
| JP6445126B2 (ja) | 2018-12-26 |
| JPWO2016133047A1 (ja) | 2017-11-09 |
| CN108026631B (zh) | 2020-02-28 |
| CN108026631A (zh) | 2018-05-11 |
| SG11201706389UA (en) | 2017-09-28 |
| MY184033A (en) | 2021-03-17 |
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