Title:
MAGNETIC STRUCTURE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/018624
Kind Code:
A1
Abstract:
A magnetic structure (10) comprises a non-magnetic substrate (12) and a plurality of columnar magnetic thin films (11). The magnetic thin films are formed from a rare earth magnetic material, and are provided on the non-magnetic substrate. With regard to the in-plane direction of the non-magnetic substrate, there are provided a film forming region (A1) where the magnetic thin films are provided, and a non-film forming region (A2) where no magnetic thin films are provided. A method for producing the magnetic structure comprises the following processes. A raw material powder is produced by mixing: a rare earth magnetic powder forming a main phase; and a grain boundary powder made from a low-melting-point metal material forming a grain boundary material. The non-magnetic substrate is supported with a substrate support section (221) functioning as an orienting magnet. A mask (230) that has an opening (231) of a shape corresponding to the film forming region is overlaid onto a thin film forming surface (13) on the non-magnetic substrate. The magnetic thin films are formed on the thin film forming surface by injecting the raw material powder toward the thin film forming surface where the mask has been overlaid.
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Inventors:
WATANABE EIJI (JP)
OGAWA TOMOYUKI (JP)
OGAWA KAZUHIRO (JP)
ICHIKAWA YUJI (JP)
SAITO HIROKI (JP)
OGAWA TOMOYUKI (JP)
OGAWA KAZUHIRO (JP)
ICHIKAWA YUJI (JP)
SAITO HIROKI (JP)
Application Number:
PCT/JP2022/028505
Publication Date:
January 25, 2024
Filing Date:
July 22, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
H01F10/12; H01F10/14; H01F41/16
Domestic Patent References:
| WO2016157764A1 | 2016-10-06 |
Foreign References:
| JP2013120798A | 2013-06-17 | |||
| JPH05315132A | 1993-11-26 | |||
| JP2018139305A | 2018-09-06 | |||
| JP2007208144A | 2007-08-16 | |||
| JP2021059754A | 2021-04-15 | |||
| JP2003297628A | 2003-10-17 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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