JPS54151424A - Magnetic head and production thereof - Google Patents
Magnetic head and production thereofInfo
- Publication number
- JPS54151424A JPS54151424A JP6015378A JP6015378A JPS54151424A JP S54151424 A JPS54151424 A JP S54151424A JP 6015378 A JP6015378 A JP 6015378A JP 6015378 A JP6015378 A JP 6015378A JP S54151424 A JPS54151424 A JP S54151424A
- Authority
- JP
- Japan
- Prior art keywords
- sio
- 2mgo
- ferrite
- magnetic head
- film
- 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.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 6
- 229910052681 coesite Inorganic materials 0.000 abstract 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract 3
- 239000000377 silicon dioxide Substances 0.000 abstract 3
- 229910052682 stishovite Inorganic materials 0.000 abstract 3
- 229910052905 tridymite Inorganic materials 0.000 abstract 3
- 239000011162 core material Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 230000035945 sensitivity Effects 0.000 abstract 2
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract 2
- 229910052839 forsterite Inorganic materials 0.000 abstract 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
Abstract
PURPOSE: To achieve the improvement in high frequency reproduction sensitivity by interposing a for sterite layer as a gap spacer between the gap opposing faces of core materials in the magnetic head.
CONSTITUTION: Cores 2, 3 formed with a 2MgO.SiO2 film 1 are bonded by using glass 4 with the film 1 being held sandwiched as a spacer, wherein 2NgO.SiO2 will not deteriorate at up to 1000°C, hence bonding by the use of high melting point glass of high mechanical strength is feasible. The coefficient of thermal expansion of 2MgO.SiO2 is equal to that of ferrite and its Vickers hardness is higher than that of ferrite, thus it can sufficiently satisfy mechanical strength, too. This enables the head of superior high-frequency reproduction sensitivity to be obtained in high density recording wherein the shortest recording wavelength is 1μm or under.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6015378A JPS54151424A (en) | 1978-05-19 | 1978-05-19 | Magnetic head and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6015378A JPS54151424A (en) | 1978-05-19 | 1978-05-19 | Magnetic head and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54151424A true JPS54151424A (en) | 1979-11-28 |
Family
ID=13133912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6015378A Pending JPS54151424A (en) | 1978-05-19 | 1978-05-19 | Magnetic head and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54151424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182535A (en) * | 1989-12-19 | 1993-01-26 | Dhyanchand P John | Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding |
-
1978
- 1978-05-19 JP JP6015378A patent/JPS54151424A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182535A (en) * | 1989-12-19 | 1993-01-26 | Dhyanchand P John | Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding |
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