WO2010055597A1 - 磁性膜付着体及びその製造方法 - Google Patents
磁性膜付着体及びその製造方法 Download PDFInfo
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- WO2010055597A1 WO2010055597A1 PCT/JP2009/003591 JP2009003591W WO2010055597A1 WO 2010055597 A1 WO2010055597 A1 WO 2010055597A1 JP 2009003591 W JP2009003591 W JP 2009003591W WO 2010055597 A1 WO2010055597 A1 WO 2010055597A1
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- film
- ferrite
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
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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
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
- H01F10/20—Ferrites
-
- 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
- H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
- H01F10/265—Magnetic multilayers non exchange-coupled
-
- 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
- H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
- H01F10/30—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the intermediate layers, e.g. seed, buffer, template, diffusion preventing, cap layers
-
- 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
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- 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
- H01F41/24—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 from liquids
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
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- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the present invention relates to a magnetic film adhering body formed by adhering a magnetic film, particularly a spinel ferrite film, to a substrate, and a method for producing the magnetic film adhering body.
- the ferrite plating method provides a high-quality ferrite film, and is disclosed in Patent Document 1, for example.
- the ferrite plating method includes: preparing a specific aqueous solution containing at least ferrous ions; bringing the surface of the substrate into contact with the specific aqueous solution, and bringing Fe 2+ ions or Fe 2+ ions and other metal hydroxide ions into the surface of the substrate. a step of adsorbing to; to give the Fe 3+ ions by oxidizing the adsorbed Fe 2+ ions, thereby causing the ferrite crystallization reaction with the metal hydroxide ions in particular aqueous solution Fe 3+ ions, the surface of the substrate Forming a ferrite film.
- any substrate can be used as long as the substrate is resistant to an aqueous solution.
- the ferrite plating method is based on a reaction via an aqueous solution, a spinel type ferrite film can be formed at a relatively low temperature (from room temperature to the boiling point of the aqueous solution). Therefore, the ferrite plating method is superior in that there are few limitations on the substrate as compared with other ferrite film forming techniques. Moreover, the ferrite film by the ferrite plating method is excellent in that it is flexible while being ceramics and easy to handle.
- Patent Documents related to the ferrite plating method include Patent Documents 2 to 6 and Non-Patent Document 1.
- Patent Document 2 discloses a technique for homogenizing the formed ferrite film and improving the reaction rate in the ferrite film forming process.
- Patent Document 3 discloses a technique for forming a ferrite film on various substrates by imparting surface activity to the substrate surface by modifying the surface of the substrate by plasma treatment.
- Patent Document 4 discloses a technique related to an improvement in the formation rate of a ferrite film.
- Patent Document 5 discloses a technique for improving the insulation of a ferrite film or a support thereof by coating the ferrite film or the support thereof with an insulating material.
- Patent Document 6 discloses a technique related to a ferrite thin film having a high magnetic permeability over a wide frequency band.
- Patent Document 7 discloses a technique for forming a magnetic film (ferrite film) by laminating a strain relaxation compound layer and a layer of ferrite constituent atoms.
- Non-Patent Document 1 discloses a technique related to a noise suppressor using a ferrite thin film based on the technique of Patent Document 6. JP 59-11129 A JP 60-140713 A Japanese Patent Laid-Open No. 61-030664 Japanese Patent Laid-Open No.
- peeling is not caused even when the thickness of the magnetic film exceeds 2 ⁇ m.
- the film thickness exceeds 2 ⁇ m.
- the magnetic film may peel off from the substrate or the magnetic film itself may be damaged.
- the present invention defines an appropriate formation condition for attaching the magnetic film to the substrate, and manufactures a magnetic film adhering body that does not cause peeling even when the magnetic film thickness exceeds 2 ⁇ m. It aims to provide a method.
- Another object of the present invention is to provide a magnetic film adhering body manufactured by the method for manufacturing a magnetic film adhering body.
- One aspect of the present invention provides a method for producing a magnetic film adhering body comprising a step of preparing a base and a step of forming a magnetic film made of alternately stacked organic films and ferrite films on the base.
- the step of forming the magnetic film includes a step of forming a ferrite film having a thickness of 20 ⁇ m or less by a ferrite plating method, and an organic film having a thickness of 0.1 ⁇ m or more and 20 ⁇ m or less.
- the step of alternately forming the organic film having a ratio t / E between the film thickness t of the organic film and the Young's modulus E of 0.025 ⁇ m / GPa or more is performed.
- Another aspect of the present invention is a magnetic film adhering body including a base and a magnetic film attached to the base, wherein the magnetic film includes alternately stacked organic films and ferrite films, Provided is a magnetic film adhesion body in which the adhesion strength between the organic film and the ferrite film is 0.1 kN / m or more.
- a magnetic film composed of a ferrite film and an organic film having high adhesion strength can be formed on the substrate.
- a magnetic film adhering body 10 includes a base 3 and a magnetic film 5 attached to the base 3.
- the magnetic film 3 includes organic films 6 and ferrite films 7 that are alternately stacked, and the adhesion strength between the organic film 6 and the ferrite film 7 is 0.1 kN / m or more.
- the adhesion strength is also 0.1 kN / m or more.
- the adhesion strength is set to 0.1 kN / m or more between any of the substrate 3, the organic film 6, and the ferrite film 7, so that no peeling problem occurs.
- the adhesion strength is a value evaluated by a peeling test performed according to the standard JIS C5016 (flexible printed wiring board test method).
- the present embodiment has a film thickness of the ferrite film 7, a film thickness of the organic film 6, and a film thickness t of the organic film 6 and the Young's modulus E.
- the optimum condition for the ratio t / E is defined as follows. First, t / E is set to 0.025 ⁇ m / GPa or more for each organic film 6. If the organic film 6 satisfying such conditions is used, a sufficient stress relaxation action can be obtained.
- the thickness of each ferrite film 7 is set to 20 ⁇ m or less, so that 0.1 kN / m as described above.
- the above adhesion strength can be obtained.
- t / E is preferably 1000 ⁇ m / GPa or less in consideration of productivity and the like.
- the magnetic film 5 which can exhibit a high electromagnetic effect can be obtained by making the total film thickness of the ferrite film 7 contained in the magnetic film 5 into 1 micrometer or more. Further, by setting the thickness of each organic film 6 to 20 ⁇ m or less, it is possible to reduce the size of the device using the magnetic film adhering body according to the present embodiment.
- the material of the substrate 3 is not particularly limited as long as it is a material resistant to an aqueous solution as described above.
- various plastics such as polyimide sheet, polyethylene terephthalate, copper, nickel, silver, gold, tungsten, molybdenum, metals such as platinum, palladium, iron, iron alloy, various organic laminates, that is, paper base epoxy, Laminated plates such as glass cloth epoxy and glass base polyester, various glasses, ceramics, and the like can be used as the material of the substrate 3.
- the purpose of using the organic film 6 is not to insulate the ferrite films 7 from each other or to insulate the ferrite film 7 from the outside. Therefore, as the material of the organic film 6, any specific resistance substance can be used.
- the organic film 6 is made of phenol resin, epoxy resin, melamine resin, urea resin, unsaturated polyester resin, polyimide, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl acetate, ABS resin, acrylic resin, Polyamide, nylon, polyacetal, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polyphenylene sulfide, polysulfone, polyethersulfone, amorphous polyarylate, liquid crystal polymer, polyamideimide, etc.
- the resin may contain a metal powder.
- the organic film 6 may be a resin containing magnetic powder in a resin.
- the magnetic powder material include Fe-based alloys such as ferrite, Fe, Fe—Co alloy, Fe—Si alloy, and Fe—Si—Al, and Ni-based alloys such as Ni and Ni—Fe alloys.
- the organic film 6 may be a material having a high dielectric constant obtained by containing carbon, metal powder, or the like in a resin.
- the method for forming the organic film 6 is not particularly limited.
- the organic film 6 may be formed by applying a resin or the like having appropriate fluidity with a coating apparatus such as a spin coater, or by forming the organic film 6 with a film forming apparatus such as sputtering. Also good.
- the ferrite film 7 is formed by a ferrite plating method.
- a film forming apparatus as shown in FIG. 2 can be used.
- the illustrated film forming apparatus is an apparatus for forming a ferrite film on a substrate 3, and includes a reaction liquid nozzle 1, an oxidizing liquid nozzle 2, and a rotary table 4.
- the turntable 4 is a table that can rotate around its axis, and the base 3 moves as the turntable 4 rotates.
- the reaction liquid nozzle 1 is for supplying a reaction liquid containing at least ferrous ions toward the turntable 4, and is fixed above the turntable 4.
- the oxidizing solution nozzle 2 is for supplying an oxidizing solution containing at least an oxidizing agent toward the turntable 4, and is fixed above the turntable 4.
- the reaction liquid nozzle 1 is positioned on one half region of the stationary rotary table 4 and the oxidizing liquid nozzle 2 is the other half of the stationary rotary table 4. It is located in an area.
- the reaction solution and the oxidation solution are alternately supplied to the substrate 3, but there is an excess.
- the reaction solution and the oxidizing solution are removed by centrifugal force. As a result, a ferrite film based ferrite film is formed on the substrate 3.
- the ferrite films 7 may have different compositions.
- the ferrite film 7 was not directly formed on the base 3, but for example, as shown in FIG. 3, the magnetic film adhering body 10 a has the ferrite film 7 directly on the base 3. It is good also as providing the magnetic film 5a formed.
- the substrate 3 may be made of an organic material.
- the organic matter of the substrate 3 has a t / E of 0.025 ⁇ m / GPa or more as in the case of the organic matter film 6.
- the adhesion strength between the organic substrate 3 and the ferrite film 7 directly formed on the substrate 3 can also be set to 0.1 kN / m or more.
- the organic matter of the substrate 3 is desirably 1000 ⁇ m / GPa or less.
- Examples 1 to 5 are magnetic film adherents that satisfy the conditions according to the present embodiment
- Comparative Examples 1 to 5 are magnetic film adherents that do not satisfy the conditions according to the present embodiment.
- the size of the substrate 3 made of glass plate is 50 mm ⁇ 50 mm ⁇ 1 mm, and the size of the substrate 3 made of polyimide sheet is 50 mm ⁇ 50 mm ⁇ 25 ⁇ m.
- the former examples are Examples 1 to 3 and Comparative Examples 1 to 3, and the latter examples are Examples 4 and 5 and Comparative Example 4.
- Polyimide A is a polyimide film having a relatively high Young's modulus (Young's modulus 4 GPa), and “Polyimide B” has a relatively low Young's modulus (Young's modulus 3 GPa). It is a polyimide film.
- a method for forming a polyimide film will be described by taking as an example the case of forming a glass plate. First, a diluent was added to polyamic acid, which is a polyimide precursor, and they were mixed. Next, the above mixture was applied to the surface of the glass plate using a spin coater.
- the coating thickness was adjusted by the viscosity of the solution and the rotation speed of the spin coater. Then, after heating the glass plate which apply
- an organic film 6 made of polyimide A having a high Young's modulus (4 GPa) or polyimide B having a low Young's modulus (3 GPa) can be formed.
- the organic film 6 of Example 5 is a mixture of an epoxy resin and Fe.
- the organic film 6 was prepared by mixing 45 vol% of Fe particles having an average particle diameter of 3 ⁇ m with a prepolymer of an epoxy resin, and further mixing a curing agent. Next, the mixture was applied so as to have an average thickness of 20 ⁇ m. Furthermore, the coating film was kept at 100 ° C. for 6 hours to be cured. The specific resistance of the mixture of epoxy resin and Fe thus formed was about 100 ⁇ cm.
- the ferrite film 7 was formed as follows. First, as a pretreatment, the substrate 3 was placed on the turntable 4 and heated to 90 ° C. while supplying deoxygenated ion-exchanged water while the turntable 4 was rotated. Next, nitrogen gas was introduced into the film forming apparatus to form a deoxygenated atmosphere. Next, the step of supplying the reaction solution from the reaction solution nozzle 1 onto the substrate 3 and the step of supplying the oxidation solution from the oxidation solution nozzle 2 to the substrate 3 were performed while the rotary table 4 was rotated. That is, the step of supplying the reaction solution and the step of supplying the oxidizing solution were alternately repeated.
- the flow rates for supplying the reaction solution and the oxidizing solution were both 40 ml / min.
- the reaction solution was formed by dissolving FeCl 2 -4H 2 O, NiCl 2 -6H 2 O, ZnCl 2 in deoxygenated ion exchange water.
- the oxidizing solution was formed by dissolving NaNo 2 and CH 3 COONH 4 in deoxygenated ion-exchanged water.
- the reaction solution and the oxidizing solution may be formed with reference to, for example, US2009-0047507A1 and US2007-0231614A1.
- the case where the ferrite film 7 is formed on the substrate 3 has been described as an example, but the case where the ferrite film 7 is formed on the organic film 6 was also performed by the same method.
- the adhesion strength was evaluated according to JIS C5016 (Flexible Printed Circuit Board Test Method) standard, and the peel strength was defined as the adhesion strength.
- the obtained magnetic film adhering body 10 was fixed to the installation base 20 with a double-sided tape 22.
- a PET film 24 was attached to the uppermost ferrite film 7 with a double-sided tape 22. In that state, the PET film 24 was peeled off in the direction of 90 °. The position between the peeled layers and the scale of the force gauge at that time were recorded, and this value was used as the adhesion strength.
- Flexibility was evaluated according to JIS C5016 (Flexible Printed Circuit Board Test Method) standard. Specifically, as shown in FIG. 5, first, the magnetic film adhering body 10 obtained with a bending radius R of 3 mm was bent. Further, the end portions of the magnetic film adhering body 10 were attached to the fixed plate 30 and the vibration plate 32, respectively. In this state, a bending test was performed in which a stroke of 30 mm was given to the diaphragm 32 at a cycle of 2 reciprocations / s and reciprocated 100,000 times. The presence or absence of delamination between each layer after the bending test reciprocated 100,000 times was visually examined. As a result, when there was no peeling, it was determined that the flexibility was good. Note that this bending test was performed only on the magnetic film adhering body of which the substrate is polyimide because the substrate cannot be bent when the substrate is a glass plate. These evaluation results are also shown in the aforementioned table.
- the film thickness of each organic film 6 is 0.1 ⁇ m or more and 20 ⁇ m or less, and the film thickness t and Young's modulus of each organic film 6 Since the ratio t / E to E is 0.025 ⁇ m / GPa or more and the film thickness of each ferrite film 7 is 20 ⁇ m or less, the adhesion strength among the substrate 3, the organic film 6 and the ferrite film 7 is 0. 1 kN / m or more. Therefore, no peeling occurs in the magnetic film adhering body 10.
- the magnetic film adhering body according to the present invention can be used in high frequency magnetic devices such as an inductance element, an impedance element, a magnetic head, a microwave element, a magnetostrictive element, and an electromagnetic interference suppressor.
- high frequency magnetic devices such as an inductance element, an impedance element, a magnetic head, a microwave element, a magnetostrictive element, and an electromagnetic interference suppressor.
- the electromagnetic interference suppressor is for suppressing electromagnetic interference caused by interference of unnecessary electromagnetic waves in a high frequency region.
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Abstract
Description
2 酸化液ノズル
3 基体
4 回転テーブル
5,5a 磁性膜
6 有機物膜
7 フェライト膜
10,10a 磁性膜付着体
20 設置台
22 両面テープ
24 PETフィルム
30 固定板
32 振動板
R 屈曲半径
Claims (9)
- 基体を準備する工程と、交互に積層された有機物膜及びフェライト膜からなる磁性膜を前記基体上に形成する工程とを備える磁性膜付着体の製造方法であって、
前記磁性膜を形成する工程は、
20μm以下の膜厚を有するフェライト膜をフェライトメッキ法により形成する工程と、
0.1μm以上20μm以下の膜厚を有する有機物膜であって当該有機物膜の膜厚tとヤング率Eとの比t/Eが0.025μm/GPa以上である有機物膜を形成する工程とを交互に行うものである
磁性膜付着体の製造方法。 - 請求項1記載の製造方法であって、前記磁性膜を形成する工程は、前記基体上に一層の前記有機物膜を形成する工程を含んでいる、製造方法。
- 請求項1記載の製造方法であって、前記磁性膜を形成する工程は、前記基体上に一層の前記フェライト膜を形成する工程を含んでいる、製造方法。
- 基体と該基体に付着された磁性膜とを備える磁性膜付着体であって、
前記磁性膜は、交互に積層された有機物膜とフェライト膜とを備えており、
前記有機物膜と前記フェライト膜との密着強度は0.1kN/m以上である
磁性膜付着体。 - 請求項4記載の磁性膜付着体であって、
前記基体上には前記磁性膜の前記有機物膜が直接形成されており、
該直接形成された前記有機物膜と前記基体との密着強度は0.1kN/m以上である
磁性膜付着体。 - 請求項4記載の磁性膜付着体であって、
前記基体は有機物よりなるものであり、
前記基体上には前記磁性膜の前記フェライト膜が直接形成されており、
該直接形成された前記フェライト膜と前記基体との密着強度は0.1kN/m以上である
磁性膜付着体。 - 請求項4乃至請求項6のいずれかに記載の磁性膜付着体であって、
前記フェライト膜の夫々は、20μm以下であり、
前記有機物膜の夫々は、0.1以上20μm以下の厚みを有しており、
前記有機物膜の夫々の膜厚tと当該有機物膜のヤング率Eとの比t/Eは、0.025μm/GPa以上である
磁性膜付着体。 - 請求項7記載の磁性膜付着体であって、
前記磁性膜に含まれる前記フェライト膜の総膜厚は1μm以上である
磁性膜付着体。 - 請求項4乃至請求項8のいずれかに記載の磁性膜付着体であって、
前記フェライト膜は、フェライトメッキ法により形成されたものである
磁性膜付着体。
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CN2009801445353A CN102209997B (zh) | 2008-11-12 | 2009-07-29 | 磁性膜附着体及其制造方法 |
US13/128,759 US20110217531A1 (en) | 2008-11-12 | 2009-07-29 | Body with magnetic film attached and manufacturing method therefor |
US14/704,530 US9991051B2 (en) | 2008-11-12 | 2015-05-05 | Body with magnetic film attached and manufacturing method thereof |
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US13/128,759 A-371-Of-International US20110217531A1 (en) | 2008-11-12 | 2009-07-29 | Body with magnetic film attached and manufacturing method therefor |
US14/704,530 Division US9991051B2 (en) | 2008-11-12 | 2015-05-05 | Body with magnetic film attached and manufacturing method thereof |
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CN106544675A (zh) * | 2016-10-26 | 2017-03-29 | 昆明理工大学 | 一种磁性薄膜复合有机薄膜的多层膜材料的制备方法 |
CN110787970B (zh) * | 2019-11-14 | 2022-11-11 | 湖南工程学院 | 一种铁氧体生料片成型设备及其成型方法 |
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JPH02116631A (ja) | 1988-10-21 | 1990-05-01 | Matsushita Electric Ind Co Ltd | フェライト膜の形成方法 |
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2009
- 2009-07-29 WO PCT/JP2009/003591 patent/WO2010055597A1/ja active Application Filing
- 2009-07-29 JP JP2009176210A patent/JP4416178B1/ja active Active
- 2009-07-29 US US13/128,759 patent/US20110217531A1/en not_active Abandoned
- 2009-07-29 CN CN2009801445353A patent/CN102209997B/zh not_active Expired - Fee Related
- 2009-07-29 KR KR1020117009843A patent/KR101553004B1/ko active IP Right Grant
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2015
- 2015-05-05 US US14/704,530 patent/US9991051B2/en active Active
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JPH01122929A (ja) * | 1987-11-09 | 1989-05-16 | Nippon Paint Co Ltd | フェライト膜およびその製法 |
JPH02248328A (ja) * | 1989-03-22 | 1990-10-04 | Matsushita Electric Ind Co Ltd | フェライト膜の形成方法 |
JPH0456107A (ja) * | 1990-06-21 | 1992-02-24 | Matsushita Electric Ind Co Ltd | インダクタンス部品およびその製造法 |
Also Published As
Publication number | Publication date |
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KR20110093771A (ko) | 2011-08-18 |
CN102209997B (zh) | 2013-07-31 |
JP4416178B1 (ja) | 2010-02-17 |
CN102209997A (zh) | 2011-10-05 |
KR101553004B1 (ko) | 2015-09-14 |
JP2010138484A (ja) | 2010-06-24 |
US9991051B2 (en) | 2018-06-05 |
US20110217531A1 (en) | 2011-09-08 |
US20150235764A1 (en) | 2015-08-20 |
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