Tdk Corporation

Canon Kabushiki Kaisha

Hitachi, Ltd.

Kureha Kagaku Kogyo Kabushiki Kaisha

Other

Cosmo Oil Co., Ltd.

Chiyoda Chemical Engineering Construction Co., Ltd.

The Westaim Corporation

Advanced Material Technologies, Inc.

Cosmo Ala Co., Ltd.

Takeshi Nomura

Yukie Nakano

Kiyoshi Yamamoto

Shigeki Sato

Shigeki Satou

Masashi Mashige

Bunryo Sato

Hiroe Tanaka

Katsuto Nagano

Suguru Takayama

Toshihiko Gotoh

Hiroyuki Kubo

Takuya Aoki

Taku Takeishi

Tomohiro Arashi

Akira Sato

Masaki Omori

Nobukazu Yogo

Masayuki Tomida

Takashi Suzuki

Hiroshi Shimizu

Mikio Shiraishi

Atsushi Hitomi

Akira Satoh

Naohiro Ozawa

Daisuke Iwanaga

Hisashi Kobayashi

Kentaro Hamma

Hideo Watanabe

Hiroshi Hozuma

Naoshi Kawabe

Hisao Takahashi

Masaki Ohmori

Sunao Miyazaki

Yoshito Nihira

Naotaka Miwa

Yoichi Kanagawa

Takeshi Kijima

Takashi Kojima

Yasuaki Hamada

Takeshi Masuda

Masaaki Ikeda

Tohru Tanaka

Takeo Tsukada

Toshio Sakurai

Yasumichi Tokuoka

Teruo Mori

Hideki Okada

Masatomo Shigeta

Taeko Tsubokura

Seigo Tokoro

Kentaro Hanma

Shogo Murosawa

Masahiro Onizuka

Tomoko Nakamura

Atsuyuki Nakano

Masahiro Karatsu

Shigekazu Sumita

Tomizo Endo

Kaori Masumiya

Kiyoji Ozaki

Seiichi Suzuki

Yoshitomo Ohara

Hajime Nakanishi

Nobuyuki Nakagawa

Tomoko Uchida

Naoto Oji

Seizi Okunomiya

Yasutaka Taguchi

Haoren Zhuang

Junko Yamamatsu

Naomichi Umehara

Naoki Kawano

Shizuo Maruyama

Haruo Izumida

Minoru Akimoto

Mari Fujii

Horoshi Shimizu

Naohiro Ozaga

Michio Abe

Kousuke Nishiyama

Thoru Tonogai

Satoshi Saito

An object is to cause a piezoelectric film to perform a piezoelectric operation at a higher voltage than the conventional piezoelectric film. An aspect of the present invention is a piezoelectric film, wherein a voltage at which a piezoelectric butterfly curve that is a result obtained by measuring a piezoelectric property of a piezoelectric film takes a minimum value is larger by 2 V or more than a coercive voltage of a hysteresis curve that is a result obtained by measuring a hysteresis property of said piezoelectric film. The piezoelectric film includes an anti-ferroelectric film, and a ferroelectric film formed on the anti-ferroelectric film.

Piezoelectric film and piezoelectric ceramics

In a molding apparatus in which upper and lower dies are held in a bearing, there are provided pipes for introducing Ngas used for controlling temperatures of balls of the bearing, whereby difference in temperature between the guide member and the upper and lower dies is controlled. With this structure, it is possible to prevent generation of an excessive compressive force between the upper die and the lower die and the bearing, to thereby prevent breakage of the dies. Further, it is also possible to prevent formation of gaps between the upper die and the lower die and the bearing, to thereby mold an optical element excellent in accuracy of an optical axis.

Molding method and apparatus for an optical element

A method for producing crystals of 5-aminolevulinic acid hydrochloride wherein, in carrying out adsorption of 5-aminolevulinic acid contained in a crude 5-aminolevulinic acid solution by a cation exchange resin and its subsequent desorption with an aqueous solution containing ammonium ion, a high purity 5-aminolevulinic acid aqueous solution is obtained using a change in electric conductivity or pH of the desorption liquid as the index, and chloride ion is added to the aqueous solution which is then mixed with an organic solvent.

Method for producing 5-aminolevulinic acid hydrochloride

A green sheet slurry, characterized by including ceramic powder, a binder resin, a plasticizer and a solvent, wherein the binder resin contains a polyvinyl butyral resin, a polymerization degree of the polybutyral resin is 1000 or more and 1700 or less, a nominal value of a butyralation degree of the resin is 65% or higher and 78% or lower, and a residual acetyl group amount is smaller than 6%.

Green sheet slurry, green sheet, production method of green sheet slurry, production method of green sheet, and production method of electronic device

A multilayer ceramic capacitor having a high dielectric constant, a large capacitance and a high reliability can be obtained by controlling a value of residual stress in it.

Layered ceramic capacitor

It is an object of the present invention to provide a dielectric paste for a spacer layer of a multi-layered ceramic electronic component which 5 does not dissolve a binder contained in a layer adjacent to the spacer layer of the multi-layered ceramic electronic component and can reliably prevent defects from being generated in a multi-layered ceramic electronic component. A dielectric paste for forming a spacer layer according to the 10 present invention contains a butyral system resin as a binder and at least one solvent selected from the group consisting of dihydroterpinyl oxyethanol, terpinyl oxyethanol, d-dihydrocarveol, I-citronellol, I-perillylalcohol and acetoxy-methoxyethoxy-cyclohexanol acetate as a solvent.

Dielectric paste for spacer layer of a multi-layered ceramic electronic component

It is an object of the present invention to provide a method for manufacturing a multilayered unit for a multi-layered ceramic electronic component which can reliably prevent short circuit failure from occurring 5 in a multi-layered ceramic electronic component. According to the present invention, a multi-layered unit for a multi-layered ceramic electronic component is fabricated by printing a conductive paste containing a butyral system resin as a binder and at least one solvent selected from a group consisting of dihydroterpinyl oxyethanol, terpinyl oxyethanol, d-dihydrocarveol, I-citronellol, I-perillylalcohol and acetoxy-methoxyethoxy-cyclohexanol acetate as a solvent on a ceramic green sheet containing an acrylic system resin as a binder in a predetermined pattern, thereby forming an electrode layer.

Conductive paste for an electrode layer of a multi-layered ceramic electronic component and a method for manufacturing a multi-layered unit for a multi-layered ceramic electronic component

It is an object of the present invention to provide a method for manufacturing a multi-layered unit for a multi-layered ceramic electronic component which can reliably prevent short circuit failure from occurring in a multi-layered ceramic electronic component and form an electrode layer in a desired manner. A method for manufacturing a multi-layered ceramic electronic component includes a step of printing a conductive paste containing a binder containing ethyl cellulose having a weight average molecular weight of MWand ethyl cellulose having a weight average molecular weight of MWat a weight ratio of X:(1&#x2212;X), where MW, MWand X are selected so that X*MW+(1&#x2212;X)*MWfalls within a range of 145,000 to 215,000 and at least one solvent selected from the group consisting of isobornyl acetate, dihydroterpinyl methyl ether, dihydroterpinyl oxyethanol, terpinyl methyl ether, terpinyl oxyethanol, d-dihydrocarveol, I-menthyl acetate, I-citronellol, I-perillylalcohol and acetoxy-methoxyethoxy-cyclohexanol acetate on a ceramic green sheet containing an acrylic system resin as a binder in a predetermined pattern, thereby forming an electrode layer.

Conductive paste for a multi-layered ceramic electronic component and a method for manufacturing a multi-layered unit for a multi-layered ceramic electronic component

It is an object of the present invention to provide a method for manufacturing a multi-layered unit for a multi-layered ceramic electronic component which can reliably prevent short circuit failure from occurring in a multi-layered ceramic electronic component and form an electrode layer in a desired manner. A method for manufacturing a multi-layered ceramic electronic component includes a step of printing a conductive paste containing a binder containing ethyl cellulose having a weight average molecular weight of MWand ethyl cellulose having a weight average molecular weight of MWat a weight ratio of X:(1&#x2212;X), where MW, MWand X are selected so that X*MW+(1&#x2212;X)*MWfalls within a range of 145,000 to 215,000 and at least one solvent selected from the group consisting of isobornyl acetate, dihydroterpinyl methyl ether, terpinyl methyl ether, &#x3b1;-terpinyl acetate, I-dihydrocarvyl acetate, I-menthone, I-menthyl acetate, I-perillyl acetate and I-carvyl acetate on a ceramic green sheet containing a butyral system resin as a binder in a predetermined pattern, thereby forming an electrode layer.

A release layeris formed on a surface of a first supporting sheetNext, an electrode layeris formed on a surface of the release layerWhen the electrode layeris pressed against a surface of a green sheetto bond the electrode layerwith the green sheetan adhesive layeris formed by a transfer method on a surface of the electrode layeror a surface of the green sheetIt becomes possible to easily transfer a dry type electrode layer to the surface of the green sheet with high accuracy without breaking or deforming the green sheet, moreover, components of the adhesive layer do not soak in the electrode layer or green sheet. Also, the supporting sheet is extremely easily released, and a production cost of a multilayer ceramic capacitor is reduced.

Production method of electronic device having internal electrode

At the time of pressing an electrode layeragainst a surface of a green sheethaving a thickness of 3 &#x3bc;m or thinner to bond the electrode layerwith the surface of the green sheet, an adhesive layerhaving a thickness of 0.02 to 0.3 &#x3bc;m is formed on a surface of the electrode layeror the surface of the green sheet. It is possible to easily transfer a dry type electrode layer to the surface of the green sheet with high accuracy without breaking or deforming the green sheet.

Production method of multilayer electronic device

A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT(where, R is at least one kind of rare earth metal, T is at least one kind of transition metal, and w defines a relation of 1&#x3c;w&#x3c;4), sintering the alloy powder in a vacuum atmosphere or an atmosphere containing gas with a molecular weight of 30 or less, and processing the alloy powder by a hot isostatic pressing. The sintered compact has a high density, and reduces deteriorations in its sintered compact properties such as magnetostrictive properties in an air atmosphere at high-temperatures.

Method for preparing sintered product, sintered product and magnetostriction material

The EL device of the present invention has a structure in which a first electrode, a first insulator layer, an electroluminescence-producing light emitting layer, a second insulator layer, and a second electrode layer are successively stacked on an electrical insulating substrate. At least one of the first insulator layer and the second insulator layer has as a main component barium titanate and in addition 0.1 to 3 mole % magnesium oxide, 0.05 to 1.0 mole % manganese oxide, no more than 1 mole % yttrium oxide, 2 to 12 mole % of barium oxide and calcium oxide, and 2-12 mole % silicon oxide.

EL device

A method of production of a dielectric ceramic composition having at least a main component of Ba TiO , a second subcomponent including at least one compound selected from SiO , MO (where M is at least one element selected from Ba, Ca, Sr, and Mg), Li O, and B O , and other subcomponents, comprising the step of: mixing in said main component at least part of other subcomponents except for said second subcomponent to prepare a pre-calcination powder, calcining the pre-calcination powder to prepare a calcined powder, and mixing at least said second subcomponent in said calcined powder to obtain the dielectric ceramic composition having molar ratios of the subcomponents to the main component of predetermined ratios. As the other subcomponents, there is a third subcomponent including at least one compound selected from V O , MoO , and WO . A ratio of the third subcomponent to 100 moles of the main component is preferably 0.01 to 0.1 mole.

Method of production of dielectric ceramic composition and method of production of electronic device containing dielectric layers

A magnetic ferrite composition including at least one of Mg, Ni, Cu, Zn, Mn, and Li and having a content of carbon within a predetermined range, for example, over 9.7 weight ppm to less than 96 weight ppm. The composition may be used as the magnetic core for an inductor, transformer, coil, etc. used for radios, televisions, communication devices, office automation equipment, switching power sources, and other electronic apparatuses or magnetic heads for video apparatuses or magnetic disk drives or other electronic components.

Magnetic ferrite composition and process of production thereof

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Tokyo, Japan

Takeshi Nomura