JPS6139907A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS6139907A JPS6139907A JP16026484A JP16026484A JPS6139907A JP S6139907 A JPS6139907 A JP S6139907A JP 16026484 A JP16026484 A JP 16026484A JP 16026484 A JP16026484 A JP 16026484A JP S6139907 A JPS6139907 A JP S6139907A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- thin film
- gap
- magnetic thin
- width
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気スッドに係り、特に磁気ギャップと対向す
る方の側面が磁気ギャップ面に対して傾□斜してなるコ
ア基体部と、そのコア基体部の磁気Ａ／ 、Ｌ＋−−ｂ
ノ鵞、記＾＋Ｊ＋啼山＾層−龜−□赫１１−１・ルー磁
束密度を有する磁性材料よりなる磁性薄膜とを備えるコ
ア半体を有する磁気ヘッドに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic rod, and in particular to a core base portion whose side surface facing a magnetic gap is inclined with respect to the magnetic gap surface, and Magnetism A/, L+--b of core base part
The present invention relates to a magnetic head having a core half including a magnetic thin film made of a magnetic material having a magnetic flux density.
磁気記録の高密度化にともない、磁気記録媒体の保磁力
が高められ、この磁気記録媒体に記録可能な磁気ヘッド
として、少なくとも磁気ギャップと対向する部分を高飽
和磁束密度を有する磁性材料で構成した磁気ヘッドの開
発が進められている。With the increase in the density of magnetic recording, the coercive force of magnetic recording media has been increased, and a magnetic head that can record on this magnetic recording medium is made of a magnetic material with a high saturation magnetic flux density, at least in the portion facing the magnetic gap. Development of magnetic heads is progressing.
本発明者らもこの種の磁気ヘッドについて種々検討した
結果、先に、磁気ギャップと対向する方の側面が磁気ギ
ャップ面に対して傾斜しているコア基体部と、そのコア
基体部の磁気ギャップと対向する方の側面に被着された
高飽和磁束密度を有する磁性材料よりなる磁性薄膜とを
備えたコア半体を用いた磁気ヘッド提案した（特開昭５
８−１５５５１３号参照）。As a result of various studies on this type of magnetic head, the present inventors first discovered a core base portion whose side surface facing the magnetic gap is inclined with respect to the magnetic gap surface, and a magnetic gap between the core base portion and the magnetic head. proposed a magnetic head using a core half with a magnetic thin film made of a magnetic material having a high saturation magnetic flux density and coated on the opposing side surface (Japanese Patent Application Laid-Open No.
8-155513).
この磁気ヘッドは、磁気ギャップと対向する方の側面が
磁気ギャップ面に対して山形に傾斜しているコア基体部
と、そのコア基体部の磁気ギャップと歯面する方の側面
に被着さ九た高鉤和謝盲南度を有する磁性材料よりなる
磁性薄膜とを備えたコア半体を、ギャップスペーサを介
して２つ組合わせたものである。This magnetic head consists of a core base portion whose side surface facing the magnetic gap is inclined in a chevron shape with respect to the magnetic gap surface, and a core base portion that is adhered to the side surface of the core base portion that faces the magnetic gap. Two core halves each having a magnetic thin film made of a magnetic material having a high pitch, a high pitch, a high pitch, and a magnetic thin film are combined with each other via a gap spacer.
ところでこの磁気ヘッドの場合、前記磁性薄膜の厚さが
トラック幅に相当する磁性薄膜の先端部の幅の１／２以
下に規制されている。そのため磁気ギャップ部の磁束密
度が飽和するよりも先に、磁気ギャップ部より離れた部
分の磁性薄膜が飽和してしまい、この構成の磁気ヘッド
の特長が十分に発揮できない難点がある。Incidentally, in the case of this magnetic head, the thickness of the magnetic thin film is limited to 1/2 or less of the width of the tip of the magnetic thin film corresponding to the track width. As a result, the magnetic thin film in a portion away from the magnetic gap portion saturates before the magnetic flux density in the magnetic gap portion saturates, and there is a drawback that the features of the magnetic head with this configuration cannot be fully demonstrated.
本発明はこのような従来技術の欠点を解消して、優れた
磁気特性を有する長寿命の磁気ヘッドを提供するにある
。The object of the present invention is to overcome these drawbacks of the prior art and provide a long-life magnetic head with excellent magnetic properties.
ギャップを介して２つのコア牛体を接合でなる磁気ヘッ
ドで、前記コア半体が、磁気ギャップと対向する方の側
面が磁気ギャップ面に対して傾斜しているコア基体部と
、そのコア基体部の磁気ギャップと対向する方の側面に
被着された高飽和磁束密度を有する磁性材料よりなる磁
性薄膜とを備えているものにおいて、前記磁性薄膜の厚
さの合計が、トラック幅に相当する磁性薄膜の先端部の
幅よりも大であることを特徴とするものである。A magnetic head consisting of two core bodies joined through a gap, wherein the core half has a core base part whose side surface facing the magnetic gap is inclined with respect to the magnetic gap surface, and the core base part. A magnetic thin film made of a magnetic material having a high saturation magnetic flux density is deposited on the side surface facing the magnetic gap of the part, and the total thickness of the magnetic thin film corresponds to the track width. It is characterized by being larger than the width of the tip of the magnetic thin film.
次に本発明の実施例１こついて図とともに説明する。第
１図は第１実施例に係る磁気ヘッドの平面図、第２図は
その磁気ヘッドの側面図である。Next, a first embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a plan view of a magnetic head according to a first embodiment, and FIG. 2 is a side view of the magnetic head.
この磁気ヘッドの場合１例えばマンガン−亜鉛フェライ
ト、ニッケルー亜鉛フェライトなどの高透磁率フェライ
トからなる２つのコア基体部３の磁気ギャップを形成す
るギャップスペーサ２と対向する方の側面７が、ギャッ
プスペーサ２の側面８（磁気ギャップ面）に対して中央
が山形に尖るように両側から直線状に傾斜している。In the case of this magnetic head 1, the side surface 7 facing the gap spacer 2 forming a magnetic gap between the two core base portions 3 made of high magnetic permeability ferrite such as manganese-zinc ferrite or nickel-zinc ferrite is the gap spacer 2. It is inclined linearly from both sides so that the center is pointed in the shape of a mountain with respect to the side surface 8 (magnetic gap surface).
そしてこの側面７上に、磁性薄膜４がスパッタリングや
真着などの適宜な手段により形成されている。この磁性
薄膜４の材料としては１１えば鉄−ケイ素合金、鉄−ア
ルミニウム−ケイ素合金。A magnetic thin film 4 is formed on this side surface 7 by appropriate means such as sputtering or direct deposition. Examples of materials for the magnetic thin film 4 include iron-silicon alloy and iron-aluminum-silicon alloy.
ニッケルー鉄合金、非晶質合金などのような前記フェラ
イトよりも飽和磁束密度が高く、高透磁率で磁歪が零付
近の金属磁性材料が用いられる。第１図に示すように、
一方のコア半体にお、いて両側に設けられた磁性薄ｌｌ
Ｉ４の厚さの合計、すなわちＴＩ（約７０μ）＋７２．
（約７０μ）（＝２．Ｔ（約１４０μ）〕は、トラック
幅に相当する磁性薄膜４の先端部の幅ＴＶ（約１２０μ
）よりも大きくなるように好ましくは２Ｔ／ＴＷが１．
１．〜１，６の範囲とするように磁性薄膜４が形成され
ている。A metallic magnetic material, such as a nickel-iron alloy or an amorphous alloy, is used, which has a higher saturation magnetic flux density than the ferrite, high magnetic permeability, and magnetostriction near zero. As shown in Figure 1,
Magnetic thin layers provided on both sides of one core half
The total thickness of I4, i.e. TI (approximately 70μ) + 72.
(approximately 70μ) (=2.T (approximately 140μ)) is the width TV (approximately 120μ) of the tip of the magnetic thin film 4, which corresponds to the track width.
), preferably 2T/TW is larger than 1.
1. The magnetic thin film 4 is formed so that the magnetic field is in the range of 1.6 to 1.6.
前記磁性薄膜４の先端部どうしがギャップスペーサ２を
介して接合されており、ギャップスペーサ２の両側はガ
ラスなどの非磁性材よりなる補強部６が設けられたいる
。The tips of the magnetic thin films 4 are joined together via a gap spacer 2, and reinforcing portions 6 made of a non-magnetic material such as glass are provided on both sides of the gap spacer 2.
第２図において９．１０はコア半体を示しており、一方
のコア半体１０には励磁コイル（図示せず）を巻装する
ためのコイル溝５が形成され、両コア半体９，１０は薄
膜状のギャップスペーサ２を介して一体になっている。In FIG. 2, reference numeral 9.10 indicates core halves, and one core half 10 is formed with a coil groove 5 for winding an excitation coil (not shown), and both core halves 9, 10 are integrated with a thin film gap spacer 2 interposed therebetween.
この貫己録訴件ヘッ゛ドは、消去ヘラ１Ｃ同量せず）と
組合わせて磁気デスク用記録再生装置に用いられる。This self-recording head is used in a magnetic disk recording/reproducing device in combination with an erasing spatula (1C).
第２図は、木登Ｙｎの第２実施例に係る磁気ヘッドの平
面図であるにの実施例で前記実施例と相違する点は、コ
ア基体部３の尖端部が中央でなく一方の側に寄った位置
に設けられている点と、そのために磁気ギャップと対向
する側面７が１つとなり、その側面７に磁性薄膜４が形
成されている点である。従ってこの場合、磁性薄膜４の
厚さの合計は一層分の厚さＴとなり、これが磁性薄膜４
の先端部の幅ＴＷよりも大きくなっている。FIG. 2 is a plan view of a magnetic head according to a second embodiment of Kinoto Yn. This embodiment is different from the previous embodiment in that the tip of the core base portion 3 is not in the center but on one side. 2. Therefore, there is only one side surface 7 facing the magnetic gap, and the magnetic thin film 4 is formed on that side surface 7. Therefore, in this case, the total thickness of the magnetic thin film 4 is the thickness T of one layer, which is the thickness of the magnetic thin film 4.
The width TW is larger than the width TW of the tip.
本発明は前述のような構成になっているから、高記録白
皮になっても、従来のように磁気ギャップ部の磁束密度
が飽和するより先番こ磁気ギャップ部より離れた部分の
磁性薄膜が磁気飽和することがなく、コア基体部の表面
に高飽和磁束密度の磁性薄膜を設けた効果が十分に発揮
でき、渦電流損失が少なく、コンタ−効果が小さいなど
の優れた磁気特性を有するとともに、磁気飽和が起りに
くい長寿命の磁気磁気ヘッドを提供するとができる。Since the present invention has the above-mentioned configuration, even if a high recording level occurs, the magnetic thin film in the portion away from the magnetic gap will be reduced earlier than the magnetic flux density in the magnetic gap becomes saturated as in the conventional case. It has excellent magnetic properties such as no magnetic saturation, the effect of providing a magnetic thin film with high saturation magnetic flux density on the surface of the core base, low eddy current loss, and small contour effect. At the same time, it is possible to provide a long-life magneto-magnetic head in which magnetic saturation is less likely to occur.
第１図は本発明の第１実施例に係る磁気ヘッドの平面図
、第２図はその磁気ヘッドの側面図、第３図は本発明の
第２実施例に係る磁気ヘッドの平面図である。
１・・・・・・磁気ヘッド、２・・・・・・ギャップス
ペーサ、３・・・・・・コア基体部、４・・・・・・磁
性薄膜、７・・・・・・コア基体部の側面、８・・・・
・・ギャップスペーサの側面。
９．１０・・・・・・コア半体、Ｔ、ＴＩ、Ｔ２・・・
・・・磁性薄膜の厚さ、ＴＷ・・・・・・磁性薄膜の先
端部の幅。
代理人 弁理士 武 順次部
牙１図
Ａ・２図FIG. 1 is a plan view of a magnetic head according to a first embodiment of the invention, FIG. 2 is a side view of the magnetic head, and FIG. 3 is a plan view of a magnetic head according to a second embodiment of the invention. . DESCRIPTION OF SYMBOLS 1... Magnetic head, 2... Gap spacer, 3... Core base part, 4... Magnetic thin film, 7... Core base body. side of section, 8...
...Side side of gap spacer. 9.10... Core half, T, TI, T2...
...thickness of the magnetic thin film, TW...width of the tip of the magnetic thin film. Agent Patent Attorney Takeshi Junjibuki Figures 1A and 2
Claims (1)
気ヘッドで、そのコア半体が、磁気ギャップと対向する
方の側面が磁気ギャップ面に対して傾斜しているコア基
体部と、そのコア基体部の磁気ギャップと対向する方の
側面に被着された高飽和磁束密度を有する磁性材料より
なる磁性薄膜とを備えるものにおいて、前記一方のコア
半体の磁性薄膜の厚さの合計が、トラック幅に相当する
磁性薄膜の先端部の幅よりも大であることを特徴とする
磁気ヘッド。A magnetic head is formed by joining two core halves through a magnetic gap. A magnetic thin film made of a magnetic material having a high saturation magnetic flux density is deposited on the side surface facing the magnetic gap of the core base portion, and the total thickness of the magnetic thin film of the one core half is , a magnetic head characterized in that the width is larger than the width of the tip of the magnetic thin film corresponding to the track width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16026484A JPS6139907A (en) | 1984-08-01 | 1984-08-01 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16026484A JPS6139907A (en) | 1984-08-01 | 1984-08-01 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6139907A true JPS6139907A (en) | 1986-02-26 |
| JPH0546609B2 JPH0546609B2 (en) | 1993-07-14 |
Family
ID=15711241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16026484A Granted JPS6139907A (en) | 1984-08-01 | 1984-08-01 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5691866A (en) * | 1992-07-08 | 1997-11-25 | Sharp Kabushiki Kaisha | Magnetic head and method of manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169214A (en) * | 1980-06-02 | 1981-12-25 | Nippon Hoso Kyokai <Nhk> | Magnetic head |
| JPS58155513A (en) * | 1982-03-10 | 1983-09-16 | Hitachi Ltd | Composite magnetic head and its manufacture |
| JPS59207415A (en) * | 1983-05-11 | 1984-11-24 | Hitachi Ltd | Compound magnetic head and its preparation |
-
1984
- 1984-08-01 JP JP16026484A patent/JPS6139907A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169214A (en) * | 1980-06-02 | 1981-12-25 | Nippon Hoso Kyokai <Nhk> | Magnetic head |
| JPS58155513A (en) * | 1982-03-10 | 1983-09-16 | Hitachi Ltd | Composite magnetic head and its manufacture |
| JPS59207415A (en) * | 1983-05-11 | 1984-11-24 | Hitachi Ltd | Compound magnetic head and its preparation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5691866A (en) * | 1992-07-08 | 1997-11-25 | Sharp Kabushiki Kaisha | Magnetic head and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546609B2 (en) | 1993-07-14 |
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