JPH0546609B2 - - Google Patents
Info
- Publication number
- JPH0546609B2 JPH0546609B2 JP59160264A JP16026484A JPH0546609B2 JP H0546609 B2 JPH0546609 B2 JP H0546609B2 JP 59160264 A JP59160264 A JP 59160264A JP 16026484 A JP16026484 A JP 16026484A JP H0546609 B2 JPH0546609 B2 JP H0546609B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- thin film
- gap
- magnetic gap
- magnetic 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.)
- Expired - Lifetime
Links
- 239000010409 thin film Substances 0.000 claims description 32
- 230000004907 flux Effects 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 description 8
- 230000035699 permeability Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- -1 iron-aluminum-silicon Chemical compound 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気ヘツドに係り、特に磁気ギヤツプ
と対向する方の側面が磁気ギヤツプ面に対して傾
斜してなるコア基体部と、そのコア基体部の磁気
ギヤツ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
備えるコア半体を有する磁気ヘツドに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic head, 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 a core base portion thereof. The present invention relates to a magnetic head having a core half comprising a magnetic thin film made of a magnetic material having a high saturation magnetic flux density and coated on the side surface facing the magnetic gap of the core.
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
能な磁気ヘツドとして、少なくとも磁気ギヤツプ
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ツ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 increased, and as a magnetic head that can record on this magnetic recording medium, at least the part facing the magnetic gap is made of a magnetic material having a high saturation magnetic flux density. Development of magnetic heads is progressing.
本発明者らもこの種の磁気ヘツドについて種々
検討した結果、先に、磁気ギヤツプと対向する方
の側面が磁気ギヤツ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ヤツプと対
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
体を用いた磁気ヘツド提案した（特開昭58−
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 of the core base portion. 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 opposite side surface (Japanese Patent Application Laid-Open No. 1983-1999).
(See No. 155513).
この磁気ヘツドは、磁気ギヤツプと対向する方
の側面が磁気ギヤツ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ヤツ
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、ギヤツ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 high Two core halves each having a magnetic thin film made of a magnetic material having a saturation magnetic flux density are combined via a gear spacer.
ところでこの磁気ヘツドの場合、前記磁性薄膜
の厚さがトラツ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
ギヤツプ部の磁束密度が飽和するよりも先に、磁
気ギヤツプ部より離れた部分の磁性薄膜が飽和し
てしまい、この構成の磁気ヘツドの特長が十分に
発揮できない難点がある。 By the way, 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, which corresponds to the track width. For this reason, the magnetic thin film in the portions away from the magnetic gap portion becomes saturated 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.
また従来、図２に示すような構造の磁気ヘツド
が提案されている（特開昭56−169214号）。この
磁気ヘツド１は、２つのコア基体部３のギヤツプ
スペーサ２と対向する方の側面７を一方向に傾斜
させ、その側面７上に高透磁率で飽和磁束密度の
高い磁性薄膜４が形成されている。 Furthermore, a magnetic head having a structure as shown in FIG. 2 has been proposed (Japanese Patent Application Laid-Open No. 169214/1983). This magnetic head 1 has two core base portions 3 whose side surfaces 7 facing the gear spacer 2 are inclined in one direction, and a magnetic thin film 4 with high magnetic permeability and high saturation magnetic flux density is formed on the side surface 7. There is.
そして前記磁性薄膜４の端面４ａどうしがギヤ
ツプスペーサ２を介して接合されており、ギヤツ
プスペーサ２の両側にはガラスなどからなる補強
部６が設けられている。 The end faces 4a of the magnetic thin films 4 are joined together via a gear spacer 2, and reinforcing parts 6 made of glass or the like are provided on both sides of the gear spacer 2.
ところでこの磁気ヘツド１では、前記磁性薄膜
４の端面４ａがトラツク幅規制面となる訳である
が、この端面４ａ（トラツク幅規制面）の幅TW
は同図に示すように、前記磁性薄膜４の厚さＴよ
り常に大となる（TW＞Ｔ）。そのため磁気ヘツ
ドを使用していると、前記磁性薄膜４の端面４ａ
から離れた個所が端面４ａの付近よりも先に磁気
飽和してしまい、高透磁率で飽和磁束密度の高い
磁性薄膜４を使用した特長が発揮できないという
欠点を有している。
By the way, in this magnetic head 1, the end surface 4a of the magnetic thin film 4 serves as a track width regulating surface, and the width TW of this end surface 4a (track width regulating surface)
As shown in the figure, is always larger than the thickness T of the magnetic thin film 4 (TW>T). Therefore, when using a magnetic head, the end surface 4a of the magnetic thin film 4
This has the drawback that the area away from the end face 4a becomes magnetically saturated earlier than the vicinity of the end face 4a, and the advantages of using the magnetic thin film 4 with high magnetic permeability and high saturation magnetic flux density cannot be exhibited.
本発明の目的は、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
ヘツドを提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to overcome the drawbacks of the prior art and provide a long-life magnetic head with excellent magnetic properties.
この目的を達成するため、本発明は、磁気ギヤ
ツプを介して２つのコア半体を接合してなる磁気
ヘツドで、そのコア半体が、磁気ギヤツプと対向
する方の側面が磁気ギヤツ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ヤツ
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
磁気ヘツドを対象とするものである。
To achieve this object, the present invention provides a magnetic head comprising two core halves joined via a magnetic gap, the core halves having a side surface facing the magnetic gap facing the magnetic gap surface. A magnetic head comprising a core base portion that is inclined at a tilt angle, and a magnetic thin film made of a magnetic material having a high saturation magnetic flux density and deposited on the side surface of the core base portion facing the magnetic gap. It is.
そして、前記磁性薄膜は前記コア基体部の１つ
の側面上の平坦部分にのみ形成され、該磁性薄膜
の前記磁気ギヤツプ側の端面が少なくとも２つの
平面より構成され、その少なくとも２つの平面の
うち１つの面が前記磁気ギヤツプ面に露出してト
ラツク幅を規定するトラツク幅規定面となり、該
磁性薄膜の厚さが前記トラツク幅規定面の幅より
も大であることを特徴とするものである。 The magnetic thin film is formed only on a flat portion on one side surface of the core base portion, and an end surface of the magnetic thin film on the magnetic gap side is composed of at least two flat surfaces, and one of the at least two flat surfaces One surface is exposed on the magnetic gap surface and serves as a track width defining surface that defines a track width, and the thickness of the magnetic thin film is larger than the width of the track width defining surface.
次に本発明の実施例について第１図とともに説
明する。
Next, an embodiment of the present invention will be described with reference to FIG.
この磁気ヘツドの場合、例えばマンガン−亜鉛
フエライト、ニツケル−亜鉛フエライトなどの高
透磁率フエライトからなる２つのコア基体部３の
磁気ギヤツプを形成するギヤツプスペーサ２と対
向する方の側面７が一方向に向けて直線状に傾斜
している。 In the case of this magnetic head, the side surface 7 facing the gap spacer 2 forming the magnetic gap of the two core base portions 3 made of high magnetic permeability ferrite such as manganese-zinc ferrite or nickel-zinc ferrite is oriented in one direction. It is sloped in a straight line.
そしてこの平坦な側面７上に、磁性薄膜４がス
パツタリングや蒸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、例
えば鉄−ケイ素合金、鉄−アルミニウム−ケイ素
合金、ニツケル−鉄合金、非晶質合金などのよう
な前記フエ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。同図に示すように、磁性薄膜４の磁気ギヤツ
プ側の端面が少なくとも２つの平面４ａと４ｂと
から構成され、その少なくとも２つの平面４ａと
４ｂのうち１つ、すなわちこの実施例の場合は平
面４ａが磁気ギヤツプ面に露出してトラツク幅を
規定するトラツク幅規定面となつており、この平
面４ａ（トラツク幅規定面）に対して他の平面４
ｂが所定の角度をもつて交わつた状態になつてい
る。 A magnetic thin film 4 is formed on this flat side surface 7 by appropriate means such as sputtering or vapor deposition. The material for the magnetic thin film 4 may be, for example, iron-silicon alloy, iron-aluminum-silicon alloy, nickel-iron alloy, amorphous alloy, etc., which have a higher saturation magnetic flux density than the ferrite, have high magnetic permeability, and have magnetostriction. A metallic magnetic material with a value of around zero is used. As shown in the figure, the end surface of the magnetic thin film 4 on the magnetic gap side is composed of at least two planes 4a and 4b, and one of the at least two planes 4a and 4b, that is, in the case of this embodiment, is a plane. 4a is exposed on the magnetic gap surface and serves as a track width defining surface that defines the track width.
b intersect at a predetermined angle.
前記磁性薄膜４の平面４ａ（トラツク幅規定面）
どうしがギヤツプスペーサ２を介して接合されて
おり、ギヤツプスペーサ２の前記平面４ａと接し
ない両側にはガラスなどの非磁性材料からなる補
強部６が設けられている。 Plane 4a (track width defining surface) of the magnetic thin film 4
The gears are joined together via a gear spacer 2, and reinforcing portions 6 made of a non-magnetic material such as glass are provided on both sides of the gear spacer 2 that are not in contact with the plane 4a.
この磁性薄膜４の厚さＴが、平面４ａ（トラツ
ク幅規定面）の幅TWよりも常に大となるように
（Ｔ＞TW）、前記端面４ｂの位置が設定されてい
る。 The position of the end surface 4b is set so that the thickness T of the magnetic thin film 4 is always larger than the width TW of the plane 4a (track width defining surface) (T>TW).
本発明は前述のようにＴ＞TWとなつているか
ら、高記録密度になつても、第２図に示した磁気
ヘツドのように磁気ギヤツプ部の磁束密度が飽和
するより先に磁気ギヤツプ部より離れた部分の磁
性薄膜が磁気飽和するようなことは生じない。
In the present invention, since T>TW as described above, even at high recording densities, the magnetic gap can reach the magnetic gap before the magnetic flux density in the magnetic gap reaches saturation as in the magnetic head shown in FIG. Magnetic saturation of the magnetic thin film at more distant parts does not occur.
そのため、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、コンター効果が小さいなどの優
れた磁気特性を有するとともに、磁気飽和が起こ
りにくい長寿命の磁気ヘツドを提供することがで
きる。 Therefore, the effect of providing a magnetic thin film with high saturation magnetic flux density on the surface of the core base can be fully demonstrated, and it has excellent magnetic properties such as low eddy current loss and small contour effect, and magnetic saturation is less likely to occur. A long-life magnetic head can be provided.
また磁性薄膜を形成する際、コア基体部の平坦
部分に垂直にスパツタリングあるいは蒸着するこ
とができるため、均質で膜特性の良好な磁性薄膜
を得ることができ、膜形成の効率も高い。 Furthermore, when forming a magnetic thin film, sputtering or vapor deposition can be performed perpendicularly to the flat portion of the core substrate, so a magnetic thin film that is homogeneous and has good film properties can be obtained, and the film formation efficiency is also high.
第１図は本発明の実施例に係る磁気ヘツドの平
面図、第２図は従来提案された磁気ヘツドの平面
図である。
１……磁気ヘツド、２……ギヤツプスペーサ、
３……コア基体部、４……磁性薄膜、４ａ，４ｂ
……端面、６……補強部、７……側面、Ｔ……磁
性薄膜の厚さ、TW……トラツク幅規定面の幅。
FIG. 1 is a plan view of a magnetic head according to an embodiment of the present invention, and FIG. 2 is a plan view of a conventionally proposed magnetic head. 1... Magnetic head, 2... Gear spacer,
3... Core base portion, 4... Magnetic thin film, 4a, 4b
...End face, 6...Reinforcement part, 7...Side surface, T...Thickness of magnetic thin film, TW...Width of track width defining surface.
Claims (1)
してなる磁気ヘツドで、そのコア半体が、磁気ギ
ヤツプと対向する方の側面が磁気ギヤツプ面に対
して傾斜しているコア基体部と、そのコア基体部
の磁気ギヤツ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、 前記磁性薄膜は前記コア基体部の１つの側面上
の平坦部分にのみ形成され、該磁性薄膜の前記磁
気ギヤツプ側の端面が少なくとも２つの平面より
構成され、その少なくとも２つの平面のうち１つ
の面が前記磁気ギヤツプ面に露出してトラツク幅
を規定するトラツク幅規定面となり、該磁性薄膜
の厚さが前記トラツク幅規定面の幅よりも大であ
ることを特徴とする磁気ヘツド。[Scope of Claims] 1. A magnetic head formed by joining two core halves through a magnetic gap, in which the side surface of the core half facing the magnetic gap is inclined with respect to the magnetic gap surface. A magnetic thin film made of a magnetic material having a high saturation magnetic flux density and coated on a side surface of the core base portion facing the magnetic gap, wherein the magnetic thin film is attached to the core base portion. is formed only on a flat portion on one side surface of the magnetic thin film, the end surface of the magnetic thin film on the side of the magnetic gap is composed of at least two flat surfaces, and one surface of the at least two flat surfaces is exposed to the magnetic gap surface. 1. A magnetic head, wherein the magnetic thin film has a thickness larger than the width of the track width defining surface.
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 JPS6139907A (en) | 1986-02-26 |
| JPH0546609B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2895680B2 (en) * | 1992-07-08 | 1999-05-24 | シャープ株式会社 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6139907A (en) | 1986-02-26 |
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