JPH01121879U - - Google Patents
Info
- Publication number
- JPH01121879U JPH01121879U JP1765288U JP1765288U JPH01121879U JP H01121879 U JPH01121879 U JP H01121879U JP 1765288 U JP1765288 U JP 1765288U JP 1765288 U JP1765288 U JP 1765288U JP H01121879 U JPH01121879 U JP H01121879U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic recording
- thin film
- magnetic sensor
- alloy thin
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 230000005381 magnetic domain Effects 0.000 claims 1
- 230000005330 Barkhausen effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図ａは本考案の一実施例を示す磁気センサ
ーの要部平面図で、ｂはその断面図、第２図ａは
従来例を示す磁気センサーの要部平面図で、ｂは
その断面図、第３図はＭＲ素子のＨ―ΔＲ特性図
で、論理的な特性を示す図、第４図はバルクハウ
ゼンノイズおよびヒステリシスの発生したＨ―Δ
Ｒ特性図である。
１……強磁性合金薄膜（ＭＲ素子）、２……リ
ード部、３……ベース基板、５……磁気検出部、
７……ＭＲ素子平行部、８……磁気記録部トラツ
ク幅、１０……多磁区構造存在範囲。
Fig. 1a is a plan view of the main part of a magnetic sensor showing an embodiment of the present invention, b is a cross-sectional view thereof, and Fig. 2a is a plan view of the main part of a magnetic sensor showing a conventional example, b is a cross-sectional view thereof. Figure 3 shows the H-ΔR characteristics of the MR element, which shows the logical characteristics, and Figure 4 shows the H-ΔR characteristics where Barkhausen noise and hysteresis occur.
It is an R characteristic diagram. 1... Ferromagnetic alloy thin film (MR element), 2... Lead part, 3... Base substrate, 5... Magnetic detection part,
7... MR element parallel portion, 8... Magnetic recording portion track width, 10... Multi-domain structure existing range.
Claims (1)
、ベース基板と磁気抵抗効果を有する強磁性合金
薄膜およびリード部から構成される磁気センサー
において、前記磁気抵抗効果を有する強磁性合金
薄膜平行部の両端部に局在する多磁区構造部分を
前記リード部で覆い被せることにより、磁気検出
部を単磁区構造とならしめたことを特徴とする磁
気センサー。 (2) 前記磁気検出部は磁気記録部トラツク方向
の長さが磁気記録部トラツク幅と等しいか、もし
くはトラツク幅よりも短いことを特徴とする実用
新案登録請求の範囲第１項記載の磁気センサー。[Claims for Utility Model Registration] (1) A magnetic sensor that faces a magnetic recording medium having a magnetic recording part and is composed of a base substrate, a ferromagnetic alloy thin film having a magnetoresistive effect, and a lead part, 1. A magnetic sensor characterized in that a magnetic detection part has a single magnetic domain structure by covering multi-domain structure parts localized at both ends of a parallel part of a ferromagnetic alloy thin film with the lead part. (2) The magnetic sensor according to claim 1, wherein the length of the magnetic detection section in the track direction of the magnetic recording section is equal to or shorter than the track width of the magnetic recording section. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1765288U JPH01121879U (en) | 1988-02-12 | 1988-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1765288U JPH01121879U (en) | 1988-02-12 | 1988-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01121879U true JPH01121879U (en) | 1989-08-18 |
Family
ID=31231625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1765288U Pending JPH01121879U (en) | 1988-02-12 | 1988-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01121879U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253618A (en) * | 1985-05-02 | 1986-11-11 | Matsushita Electric Ind Co Ltd | Thin film magnetic head |
| JPS62239308A (en) * | 1986-04-09 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Magneto-resistance type magnetic head |
-
1988
- 1988-02-12 JP JP1765288U patent/JPH01121879U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253618A (en) * | 1985-05-02 | 1986-11-11 | Matsushita Electric Ind Co Ltd | Thin film magnetic head |
| JPS62239308A (en) * | 1986-04-09 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Magneto-resistance type magnetic head |
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