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1. 发明专利

JP3728411B2 A method for manufacturing a magnetic particles, magnetic particles and the magnetic material 有权
公开(公告)号：JP3728411B2
公开(公告)日：2005-12-21
申请号：JP2001283324
申请日：2001-09-18
申请人：ソニー株式会社 , 義寛加藤 , 諭杉本 , 浩一郎猪俣
发明人：義寛加藤 , 薫小林 , 克巳岡山 , 諭杉本 , 浩一郎猪俣
IPC分类号： C25B3/12 , B22F1/00 , B22F9/24 , B22F9/30 , C22C32/00 , C25B1/00 , H01F1/00 , H01F1/24 , H01F41/30 , H05K9/00
CPC分类号： B82Y30/00 , B22F1/0018 , B22F1/0059 , B22F9/24 , B22F9/305 , B22F2998/00 , B82Y25/00 , B82Y40/00 , C22C32/0094 , H01F1/0054 , H01F41/30 , H01F41/301 , Y10S977/777 , Y10S977/783 , Y10T428/12146 , Y10T428/254 , Y10T428/256 , Y10T428/257 , Y10T428/29 , Y10T428/2991 , Y10T428/2998 , B22F3/02
摘要： A method for producing a magnetic particle forming a magnetic material for absorbing electromagnetic waves comprises the steps of mixing an organometallic complex or a metal salt with a chain polymer and dissolving the mixture in a solvent (step S1); raising the temperature of the mixture to reaction temperature (step S2), carrying out a reaction at the reaction temperature (step S3); and forming the magnetic particle having a structure that the periphery of each fine particle formed from the organometallic complex or the metal salt is surrounded by the chain polymer and recovering the formed magnetic particle after the reaction (step S4). The magnetic particle has a nanogranular structure to become a magnetic material for absorbing electromagnetic waves. Such a magnetic particle is produced by a wet reaction. Thus, a larger amount of magnetic particle can be produced by one reaction.

2. 发明专利

JP2003297628A Magnetic film and its forming method 有权
标题翻译：磁膜及其形成方法
公开(公告)号：JP2003297628A
公开(公告)日：2003-10-17
申请号：JP2002097177
申请日：2002-03-29
申请人： Koichiro Inomata , Sony Corp , Satoshi Sugimoto , ソニー株式会社 , 諭杉本 , 浩一郎猪俣
发明人： OKAYAMA KATSUMI , KOBAYASHI KAORU , INOMATA KOICHIRO , SUGIMOTO SATOSHI
IPC分类号： H01F10/12 , H01F41/16
摘要： PROBLEM TO BE SOLVED: To efficiently and inexpensively form a thick high-permeability magnetic film. SOLUTION: After a powder of a metallic magnetic material and another power having a high electrical resistance are placed in a mixer 11 and mixed with each other as a powdered material 14, the material 14 is transformed into an aerosol in a chamber 12. Then the aerosol is jetted from a nozzle 15, and the particles 14a contained in the aerosol are stuck to the substrate 20a. Consequently, a magnetic film having a nanogranular structure, in which the main phase is constituted of the magnetic phase of the metallic magnetic material and grain boundaries are constituted of the high-electrical resistance powder, is formed on the substrate 20a. When a ferrite powder is used as the high electrical resistance powder, a magnetic film having a nanogranular structure, in which both the main phase and grain boundaries are constituted of the magnetic material, can be formed, and accordingly, the permeability of the magnetic film can be made higher. In this method, since the magnetic film is formed by making the particles of the powder material 14 stick to the substrate 20a, by only jetting the material 14 from the nozzle 15 in this method, a magnetic film having an appropriate thickness can be formed efficiently and inexpensively. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了有效和低成本地形成厚的高磁导率磁性膜。解决方案：将金属磁性材料的粉末和具有高电阻的另一种功率放置在混合器11中并作为粉末材料14彼此混合后，将材料14转变成腔室12中的气溶胶然后从喷嘴15喷射气溶胶，将包含在气溶胶中的颗粒14a粘贴到基板20a上。因此，在基板20a上形成具有纳米结构的磁性膜，其中主相由金属磁性材料的磁相和晶界构成，由高电阻粉末构成。当使用铁氧体粉末作为高电阻粉末时，可以形成具有纳米结构的磁性膜，其中主相和晶界都由磁性材料构成，因此，磁性膜的磁导率可以做得更高。在该方法中，由于通过使粉末材料14的粒子粘附到基板20a而形成磁性膜，所以通过在该方法中仅从喷嘴15喷射材料14，可以有效地形成具有适当厚度的磁性膜并且成本低廉。版权所有（C）2004，JPO

3. 发明专利

JP2003297629A Magnetic film 有权
标题翻译：磁性膜
公开(公告)号：JP2003297629A
公开(公告)日：2003-10-17
申请号：JP2002097176
申请日：2002-03-29
申请人： Koichiro Inomata , Sony Corp , Satoshi Sugimoto , ソニー株式会社 , 諭杉本 , 浩一郎猪俣
发明人： OKAYAMA KATSUMI , KOBAYASHI KAORU , INOMATA KOICHIRO , SUGIMOTO SATOSHI , AKETO JUN
IPC分类号： H01F1/00 , H01F1/34 , H01F10/20 , H01F17/06 , H03H7/01 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a magnetic film having high electromagnetic wave absorbing performance, even in a high frequency band. SOLUTION: This magnetic film 30, formed by the AD method by using an NiZn ferrite powder and an MnZn ferrite powder as a powdered material, turns to have a nano-granular structure, in which crystal grains are constituted of an NiZn ferrite 31 and an MnZn ferrite 32 and grain boundaries are constituted of an NiZn/MnZn ferrite 33. Since both the crystal grains and grain boundaries of this magnetic film 30 are formed of the oxide magnetic materials having high electrical resistances, the electrical resistance of this film 30 can be made higher, as compared with the conventional magnetic film containing metallic magnetic materials. Consequently, the permeability and high-frequency characteristics of this film 30 can be improved. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：即使在高频带中，也提供具有高电磁波吸收性能的磁性膜。解决方案：通过使用NiZn铁氧体粉末和MnZn铁氧体粉末作为粉末材料通过AD方法形成的磁性膜30变成具有纳米粒状结构，其中晶粒由NiZn铁氧体构成 31和MnZn铁氧体32和晶界由NiZn / MnZn铁氧体33构成。由于该磁性膜30的晶粒和晶界都由具有高电阻的氧化物磁性材料形成，所以该膜的电阻与传统的含有金属磁性材料的磁性膜相比，可以制得较高的30。因此，可以提高该膜30的导磁率和高频特性。版权所有（C）2004，JPO

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