JPS6486504A - Powder for magnetic shielding and magnetic shielding material - Google Patents
Powder for magnetic shielding and magnetic shielding materialInfo
- Publication number
- JPS6486504A JPS6486504A JP62242508A JP24250887A JPS6486504A JP S6486504 A JPS6486504 A JP S6486504A JP 62242508 A JP62242508 A JP 62242508A JP 24250887 A JP24250887 A JP 24250887A JP S6486504 A JPS6486504 A JP S6486504A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- mean
- magnetic shielding
- extends over
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
- Soft Magnetic Materials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
PURPOSE:To manufacture a magnetic shielding material having high directional proper ties by dispersing magnetic powder composed of tabular or flat-shaped magnetic particles manufactured without crushing a specific oxide magnetic material into an organic binder and changing the organic binder into a sheet. CONSTITUTION:A magnetic shielding material consists of the tabular particles of a hexagonal system oxide magnetic material having axes of easy magnetization in the directions except a C axis, a mean diameter thereof extends over 1-100mum, mean thickness thereof extends over 0.01-19mum and the ratio of mean external shape/mean the thickness thereof extends over 5 or more. An A-Me-Co-Fe-D group magnetic oxide (where A represents at least one kind of an alkali earth metal such as Ba, Sr, etc., Me at least one kind of bivalent Fe, Ni, zn, Mn, Cu, Cd, Mg and (Fe<3>++Li<1+>)/2 and D at least one kind of trivalent Al, Mn, Cr, Ga, and (Co<2+>+Ti<4+>)/2) is preferable as the composition of the hexagonal system oxide magnetic material. Magnetic particles, a synthetic resin and a proper solvent and additives such as a quantity of a dispersant are mixed, thus acquiring paints. When a magnetic field is applied in the direction parallel with a coated surface on application, the effect of magnetic shielding in the direction is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62242508A JP2687124B2 (en) | 1987-09-29 | 1987-09-29 | Powder for magnetic shield and magnetic shield material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62242508A JP2687124B2 (en) | 1987-09-29 | 1987-09-29 | Powder for magnetic shield and magnetic shield material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6486504A true JPS6486504A (en) | 1989-03-31 |
JP2687124B2 JP2687124B2 (en) | 1997-12-08 |
Family
ID=17090147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62242508A Expired - Lifetime JP2687124B2 (en) | 1987-09-29 | 1987-09-29 | Powder for magnetic shield and magnetic shield material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2687124B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998008234A1 (en) * | 1996-08-23 | 1998-02-26 | Tokin Corporation | Emi preventive part and active device with the same |
WO2004097863A1 (en) * | 2003-05-01 | 2004-11-11 | Juridical Foundation Osaka Industrial Promotion Organization | Magnetic material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5032207A (en) * | 1973-07-20 | 1975-03-28 | ||
JPS59119900A (en) * | 1982-12-27 | 1984-07-11 | 信越ポリマ−株式会社 | Magnetic shielding material for magnetic recording medium and magnetic shield mold |
-
1987
- 1987-09-29 JP JP62242508A patent/JP2687124B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5032207A (en) * | 1973-07-20 | 1975-03-28 | ||
JPS59119900A (en) * | 1982-12-27 | 1984-07-11 | 信越ポリマ−株式会社 | Magnetic shielding material for magnetic recording medium and magnetic shield mold |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998008234A1 (en) * | 1996-08-23 | 1998-02-26 | Tokin Corporation | Emi preventive part and active device with the same |
WO2004097863A1 (en) * | 2003-05-01 | 2004-11-11 | Juridical Foundation Osaka Industrial Promotion Organization | Magnetic material |
Also Published As
Publication number | Publication date |
---|---|
JP2687124B2 (en) | 1997-12-08 |
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