Tdk Corporation

Kyotaro Abe

Shigeki Sato

Isao Nakahata

Takuya Tsukahara

Hisashi Kobayashi

Yoshihiro Shinkai

Masahito Koeda

Akira Yamaguchi

Kazuhiro Yoshidome

Takashi Kamiya

Hideharu Moro

Tatsuya Kojima

Shogo Murosawa

Mayumi Suzuki

Toru Tonogai

Tamotsu Ishiyama

Toshiaki Kikuchi

Tsukasa Sato

Raitaro Masaoka

Akinori Iwasaki

Ryuji Fujisawa

Provided a soft magnetic alloy ribbon containing Fe and B. Convex portions having an average convex portion height of 7 nm to 130 nm are present on an alloy surface.

Soft magnetic alloy, soft magnetic alloy ribbon, laminate, and magnetic core

The object of the present invention is to provide an alloy ribbon capable of having excellent adhesiveness between the alloy ribbons when a plurality of the alloy ribbons is stacked; and also, to provide a magnetic core using the alloy ribbon. The present invention is an alloy ribbon comprising metals scattered on at least one surface of the alloy ribbon, in which diameters of the scattered metals are 1 μm or more, and the scattered metals include Cu.

Alloy ribbon and magnetic core

A specific depth at which a concentration of Fe reaches 10 at % is 18 nm or more and 500 nm or less from the first surface, and from the first surface to the specific depth, the concentration of Fe is less than 10 at %, and a positive increase region is present in which the concentration of Fe increases with a substantially positive concentration gradient, in a case where the concentration of Fe is measured in a depth direction from a first surface of a ribbon.

Magnetic alloy ribbon, laminate, and magnetic core

The object of the present invention is to provide a fluidizing particle capable of improving a fluidity of a magnetic particle for a magnetic core and capable of improving a permeability of the magnetic core. The fluidizing particle includes a particle body having a magnetic property and a coating layer including a silicon compound covering the particle body, wherein a particle size of the fluidizing particle is 10 to 40 nm, and a circularity of the fluidizing particle is 0.55 or more.

Fluidizing particle and magnetic core

A soft magnetic material comprising a soft magnetic metal powder and a resin, wherein the soft magnetic metal powder is constituted from a particle group &#x3b1; and group &#x3b2;, when IA is a peak intensity of the particle group &#x3b1;, IB is a peak intensity of the particle group &#x3b2;, and IC is a minimum intensity present between the particle group &#x3b1; and group &#x3b2;, then an intensity ratio IC/IA satisfies 0.10 or less and an intensity ratio IA/IB satisfies 1.2 or more and 3.0 or less, the particle group &#x3b1; having a maximum peak intensity in a size distribution of the soft magnetic metal powder, the particle group &#x3b2; having an peak intensity which is the second largest to the particle group &#x3b1;, and a peak particle size PA of the particle group &#x3b1; is larger than a peak particle size PB of the particle group &#x3b2;.

Soft magnetic material, core, and inductor

The object of the present invention is to provide the soft magnetic material, the core, and the inductor having high permeability and excellent DC superimposition characteristic. A soft magnetic material comprising a soft magnetic metal powder and a resin, wherein said soft magnetic metal powder is constituted from a particle group &#x3b1; and a particle group &#x3b2;, when IA is a peak intensity of the particle group &#x3b1;, V&#x3b1; is the volume of the particle group &#x3b1;, IB is a peak intensity of the particle group &#x3b2;, V&#x3b2; is the volume of the particle group &#x3b2;, and IC is a minimum intensity present between the particle group &#x3b1; and the particle group &#x3b2;, then an intensity ratio IC/IA satisfies 0.12 or less, and a volume ratio V&#x3b1;/V&#x3b2; is 2.0 or more and 5.1 or less.

An object of the present invention is to provide an electrode sintered body wherein shrinkage is prohibited and conductivity is good. An electrode sintered body including intermetallic compound comprising nickel and aluminum is provided. And then an internal electrode paste, which can inhibit shrinkage of an internal electrode layer, is manufactured by raising sintering temperature of conducting particle materials constituting internal electrode sheet to be internal electrode layers after firing. Further, a high-function multilayer electronic device using electrode paste for internal electrodes is manufactured.

Electrode sintered body, multilayer electronic device, internal electrode paste, a manufacturing method of electrode sintered body and a manufacturing method of multilayer electronic device

A release layer paste used for producing a multilayer type electronic device and forming a release layer of a thickness of 0.05 to 0.1 &#x3bc;m, used in combination with an electrode layer paste including one or more solvents selected from limonene, dihydroterpinyl methyl ether, &#x3b1;-terpinyl acetate, terpinyl methyl ether, isobornyl acetate, caryophyllene, 1-dihydrocarvyl acetate, menthone, menthyl acetate, perillyl acetate, carvyl acetate, d-dihydrocarvyl acetate, and butyl carbitol acetate and a binder comprised of ethyl cellulose, including a ceramic powder, organic vehicle, plasticizer, and dispersion agent, the organic vehicle containing a binder having polyvinyl acetal as its main ingredient, a ratio (P/B) of the ceramic powder with respect to the binder and plasticizer being controlled to 1.33 to 5.56 (however, excluding 5.56).

Release layer paste and method of production of a multilayer type electronic device

A release layer paste used for producing a multilayer electronic device, used in combination with an electrode layer paste including terpineol, dehydroterpineol, terpineol acetate, or dehydroterpineol acetate and including a ceramic powder, organic vehicle, plasticizer, and dispersion agent, the organic vehicle containing a binder having polyvinyl acetal as its main ingredient, a ratio (P/B) of the ceramic powder and the binder and plasticizer being controlled to 1.33 to 5.56 (however, excluding 5.56).

A laminated ceramic electronic component includes a ceramic substrate, an internal electrode, and a buffer layer. The ceramic substrate includes a protective layer and a functional layer. The protective layer is disposed on at least one side of the functional layer. The internal electrode is embedded in the functional layer. The buffer layer is embedded in the protective layer and has a different burning shrinkage from the ceramic substrate.

Laminated ceramic electronic component

A green sheet coating material includes ceramic powder and a binder resin containing a butyral based resin as the main component, which furthermore includes a xylene based resin as a tackifier. The xylene based resin is included in a range of 1.0 wt % or less, more preferably 0.1 or more and 1.0 wt % or less, and particularly preferably more than 0.1 and 1.0 wt % or less with respect to 100 parts by weight of ceramic powder.

Green sheet coating material, green sheet, production method of green sheet and production method of electronic device

A green sheet coating material including ceramic powder, a binder resin including a butyral based resin as the main component, and a solvent. The solvent includes a first solvent medium having a relatively low boiling point, wherein said binder resin is easy to be dissolved, and a second solvent medium having a relatively high boiling point. The boiling point of the second solvent medium is in a range of 130 to 230&#xb0; C. The second solvent medium is included by 5 to 70 wt %, and more preferably 8 to 52 wt % with respect to 100 wt % of the entire solvent.

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Tokyo, Japan

Kyotaro Abe