JPH04245007A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH04245007A JPH04245007A JP3010143A JP1014391A JPH04245007A JP H04245007 A JPH04245007 A JP H04245007A JP 3010143 A JP3010143 A JP 3010143A JP 1014391 A JP1014391 A JP 1014391A JP H04245007 A JPH04245007 A JP H04245007A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- films
- magnetic
- film
- sendust
- 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
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000702 sendust Inorganic materials 0.000 abstract description 12
- 230000005389 magnetism Effects 0.000 abstract description 2
- 229910003271 Ni-Fe Inorganic materials 0.000 abstract 1
- 238000004544 sputter deposition Methods 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は磁気ヘッドに係り、特に
所謂メタル・イン・ギャップ型の磁気ヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, and more particularly to a so-called metal-in-gap type magnetic head.
【０００２】メタル・イン・ギャップ型の磁気ヘッドに
おいては、擬似ギャップが不可避的に形成されてしまう
。In a metal-in-gap type magnetic head, a pseudo gap is inevitably formed.
【０００３】情報信号の記録媒体への記録再生特性とし
て良好な特性を得るためには、擬似ギャップ出力が低い
こと、出来れば０．５ｄＢ以下であることが望ましい。In order to obtain good characteristics for recording and reproducing information signals onto a recording medium, it is desirable that the pseudo gap output be low, preferably 0.5 dB or less.
【０００４】0004
【従来の技術】従来の磁気ヘッド１は、図３に示すよう
に、フェライトコア半体２ａ，２ｂの突き合わせ面３ａ
，３ｂ上に、中間膜４ａ，４ｂを介してセンダスト（登
録商標）膜５ａ，５ｂが形成されたセンダスト（登録商
標）膜付きフェライトコア半体６ａ，６ｂを、ギャップ
材７を介して接合してなる構造であり、上記中間層４ａ
，４ｂが、Ｃｒ，ＳｉＯ２ 等の非磁性体製のもの又は
、スパッタリングにより５０〜１０，０００Åの厚さに
形成したＦｅ系合金の磁性体製のものである。2. Description of the Related Art A conventional magnetic head 1, as shown in FIG.
, 3b, Sendust (registered trademark) film-coated ferrite core halves 6a, 6b on which Sendust (registered trademark) films 5a, 5b are formed via interlayer films 4a, 4b are joined via gap material 7. The intermediate layer 4a has a structure of
, 4b are made of a non-magnetic material such as Cr or SiO2, or made of a magnetic material such as an Fe-based alloy formed by sputtering to a thickness of 50 to 10,000 Å.
【０００５】[0005]
【発明が解決しようとする課題】従来の磁気ヘッド１は
、中間膜４ａ，４ｂの個所にできた擬似ギャップ８ａ，
８ｂの出力は１ｄＢ以下ではあるけれども０．５ｄＢ以
上であり、十分に小さくできなかった。[Problems to be Solved by the Invention] The conventional magnetic head 1 has pseudo gaps 8a and 8a, which are formed at the intermediate films 4a and 4b.
Although the output of 8b was less than 1 dB, it was more than 0.5 dB, and could not be made sufficiently small.
【０００６】本発明は、擬似ギャップ出力を０．５ｄＢ
以下とすることを可能とした磁気ヘッドを提供すること
を目的とする。[0006] The present invention improves the pseudo gap output by 0.5 dB.
It is an object of the present invention to provide a magnetic head that can do the following.
【０００７】[0007]
【課題を解決するための手段】本発明は、フェライトコ
ア半体の突き合わせ面に、中間膜を介して金属磁性膜が
形成された一対の金属磁性膜付きのフェライトコア半体
同士を、ギャップ材を介して接合してなる磁気ヘッドに
おいて、上記中間膜が、組成が８１Ｎｉ−Ｆｅであり、
磁気特性が軟磁性であり、厚さが１，０００±１００Å
である構成としたものである。[Means for Solving the Problems] The present invention provides a pair of ferrite core halves with a metal magnetic film formed on the abutting surfaces of the ferrite core halves with an intermediate film interposed therebetween, using a gap material. In the magnetic head, the intermediate film has a composition of 81Ni-Fe,
The magnetic properties are soft magnetic and the thickness is 1,000±100 Å.
The configuration is as follows.
【０００８】[0008]
【作用】組成が８１Ｎｉ−Ｆｅ、磁気特性が軟磁性、厚
さが１，０００±１００Åである中間膜は、擬似ギャッ
プ出力を０．５ｄＢ以下とする。[Operation] The intermediate film having a composition of 81Ni-Fe, a soft magnetic property, and a thickness of 1,000±100 Å provides a pseudo gap output of 0.5 dB or less.
【０００９】[0009]
【実施例】図１は本発明の一実施例の磁気ヘッド１０を
示す。図中、図３に示す構成部分と対応する部分には同
一符号を付す。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a magnetic head 10 according to an embodiment of the present invention. In the figure, parts corresponding to those shown in FIG. 3 are given the same reference numerals.
【００１０】この磁気ヘッド１０は、フェライトコア半
体２ａ，２ｂの突き合わせ面３ａ，３ｂ上に、本発明の
要部をなす中間膜１１ａ，１１ｂを介してセンダスト（
登録商標）膜５ａ，５ｂが形成されたセンダスト（登録
商標）膜付きフェライトコア半体１２ａ，１２ｂを、ギ
ャップ材７を介して接合してなる構造である。This magnetic head 10 is constructed by applying sendust (
This structure is formed by joining ferrite core halves 12a and 12b with Sendust (registered trademark) films on which Sendust (registered trademark) films 5a and 5b are formed, with a gap material 7 interposed therebetween.
【００１１】中間膜１１ａ，１１ｂは、８１Ｎｉ−Ｆｅ
合金を、その軟磁性特性を維持するスパッタ条件でスパ
ッタリングを行って形成したものであり、組成は８１Ｎ
ｉ−Ｆｅであり、磁気特性は軟磁性であり、厚さは１，
０００±１００Åである。[0011] The intermediate films 11a and 11b are made of 81Ni-Fe.
It is formed by sputtering an alloy under sputtering conditions that maintain its soft magnetic properties, and its composition is 81N.
i-Fe, the magnetic properties are soft magnetism, and the thickness is 1,
000±100 Å.
【００１２】中間膜１１ａ，１１ｂの個所に擬似ギャッ
プ１３ａ，１３ｂが形成される。次に、中間膜１１ａ，
１１ｂを上記のように定めた根拠について説明する。Pseudo gaps 13a and 13b are formed at the intermediate films 11a and 11b. Next, the intermediate film 11a,
The basis for defining 11b as above will be explained.
【００１３】本発明者は、８１Ｎｉ−Ｆｅ合金を、その
軟磁性特性を維持するスパッタ条件でスパッタリングを
行って、種々の厚さの軟磁性８１Ｎｉ−Ｆｅ合金膜を形
成し、種々の厚さの軟磁性８１Ｎｉ−Ｆｅ合金膜を有す
る磁気ヘッドを製造し、各磁気ヘッドについて擬似ギャ
ップ出力を測定した。その結果、図２中線Ｉで示す結果
を得た。The present inventor formed soft magnetic 81Ni-Fe alloy films of various thicknesses by sputtering 81Ni-Fe alloy under sputtering conditions that maintain its soft magnetic properties. A magnetic head having a soft magnetic 81Ni-Fe alloy film was manufactured, and the pseudo-gap output of each magnetic head was measured. As a result, the results shown by the middle line I in FIG. 2 were obtained.
【００１４】図２より、厚さが１，０００Åの８１Ｎｉ
−Ｆｅ合金膜を中間膜として使用した磁気ヘッドにおい
て、擬似ギャップ出力が約０．２５ｄＢとなり、最も低
く、且つ５ｄＢ以下であり、８１Ｎｉ−Ｆｅ合金膜の厚
さが１，０００Åより薄くてもまた厚くなっても擬似ギ
ャップ出力が増加することが分かる。From FIG. 2, 81Ni with a thickness of 1,000 Å
- In a magnetic head using a Fe alloy film as an intermediate film, the pseudo gap output is approximately 0.25 dB, which is the lowest and below 5 dB, and even when the thickness of the 81Ni-Fe alloy film is thinner than 1,000 Å, It can be seen that the pseudo gap output increases even as the thickness increases.
【００１５】そこで、上記中間膜１１ａ，１１ｂとして
上記の諸特性のものを使用している。[0015] Therefore, intermediate films 11a and 11b having the above-mentioned characteristics are used.
【００１６】なお、厚さの±１００Åは、１，０００Å
の厚さを目標としてスパッタリングしたときの一般的な
厚さのばらつきの範囲である。[0016] Note that the thickness ±100 Å is 1,000 Å.
This is the typical range of thickness variation when sputtering is performed with a target thickness of .
【００１７】従って、上記の磁気ヘッド１０は、擬似ギ
ャップ１３ａ，１３ｂによる出力が０．５ｄＢ以下であ
るという良好な特性を有する。Therefore, the magnetic head 10 described above has good characteristics in that the output due to the pseudo gaps 13a and 13b is 0.5 dB or less.
【００１８】なお、このように、擬似ギャップ出力を低
く抑えられることは、■フェライトコア半体２ａ，２ｂ
からセンダスト（登録商標）膜５ａ，５ｂへの磁気特性
の変化が緩やかであること、■センダスト（登録商標）
膜５ａ，５ｂとフェライトコア半体２ａ，２ｂとの境界
に歪が発生しにくく、センダスト（登録商標）膜５ａ，
５ｂの剥離が起きにくいことによるものと考えられる。[0018] The fact that the pseudo gap output can be kept low in this way is due to the following:
The change in magnetic properties from Sendust (registered trademark) to Sendust (registered trademark) films 5a and 5b is gradual, ■ Sendust (registered trademark)
Sendust (registered trademark) films 5a, 5b are less susceptible to strain at the boundaries between the films 5a, 5b and the ferrite core halves 2a, 2b.
This is thought to be due to the fact that 5b does not easily peel off.
【００１９】[0019]
【発明の効果】以上説明した様に、本発明によれば、擬
似ギャップ出力を０．５ｄＢ以下と小さくすることが出
来、本発明の磁気ヘッドを使用することにより記録媒体
に対する情報信号の記録再生を良好に行うことが出来る
。As explained above, according to the present invention, the pseudo gap output can be reduced to 0.5 dB or less, and by using the magnetic head of the present invention, it is possible to record and reproduce information signals on a recording medium. can be performed well.
【図１】本発明の一実施例の磁気ヘッドのヘッド面を示
す図である。FIG. 1 is a diagram showing a head surface of a magnetic head according to an embodiment of the present invention.
【図２】８１Ｎｉ−Ｆｅ膜の厚さと擬似ギャップの出力
との関係を示す図である。FIG. 2 is a diagram showing the relationship between the thickness of the 81Ni-Fe film and the output of the pseudo gap.
【図３】従来の磁気ヘッドの１例のヘッド面を示す図で
ある。FIG. 3 is a diagram showing a head surface of an example of a conventional magnetic head.
２ａ，２ｂ フェライトコア半体
３ａ，３ｂ 突き合わせ面
５ａ，５ｂ センダスト（登録商標）膜７ ギャッ
プ材
１０ 磁気ヘッド
１１ａ，１１ｂ 中間膜
１２ａ，１２ｂ センダスト（登録商標）膜付きフェ
ライトコア
１３ａ，１３ｂ 擬似ギャップ2a, 2b Ferrite core halves 3a, 3b Abutting surfaces 5a, 5b Sendust (registered trademark) film 7 Gap material 10 Magnetic heads 11a, 11b Intermediate films 12a, 12b Ferrite cores with Sendust (registered trademark) film 13a, 13b Pseudo gap
Claims (1)
、中間膜を介して金属磁性膜が形成された一対の金属磁
性膜付きのフェライトコア半体同士を、ギャップ材を介
して接合してなる磁気ヘッドにおいて、上記中間膜が、
組成が８１Ｎｉ−Ｆｅであり、磁気特性が軟磁性であり
、厚さが１，０００±１００Åである構成としたことを
特徴とする磁気ヘッド。[Claim 1] A magnetic material formed by joining a pair of ferrite core halves with a metal magnetic film, in which a metal magnetic film is formed on the abutting surfaces of the ferrite core halves with an intermediate film interposed therebetween, through a gap material. In the head, the intermediate film is
A magnetic head having a composition of 81Ni-Fe, a soft magnetic property, and a thickness of 1,000±100 Å.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3010143A JPH04245007A (en) | 1991-01-30 | 1991-01-30 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3010143A JPH04245007A (en) | 1991-01-30 | 1991-01-30 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04245007A true JPH04245007A (en) | 1992-09-01 |
Family
ID=11742064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3010143A Pending JPH04245007A (en) | 1991-01-30 | 1991-01-30 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04245007A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0737960A1 (en) * | 1995-04-10 | 1996-10-16 | Sharp Kabushiki Kaisha | Magnetic thin film for magnetic head, method of manufacturing the same, and magnetic head |
-
1991
- 1991-01-30 JP JP3010143A patent/JPH04245007A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0737960A1 (en) * | 1995-04-10 | 1996-10-16 | Sharp Kabushiki Kaisha | Magnetic thin film for magnetic head, method of manufacturing the same, and magnetic head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5891B2 (en) | magnetic recording medium | |
| JPH02502232A (en) | Laminated sendust metal-in-gap video head | |
| JPS60239916A (en) | Vertical magnetic recording medium | |
| JPH04245007A (en) | Magnetic head | |
| JPH0660333A (en) | Magneto-resistance effect head | |
| JPS61134913A (en) | Magnetoresistance type thin film head | |
| JPH08115507A (en) | Magnetic head | |
| JP3081229B2 (en) | MIG type magnetic head | |
| JPH04285723A (en) | Vertical magnetic recording medium | |
| JPS5987612A (en) | Vertical magnetic recording system | |
| JPS63129511A (en) | Magnetoresistance effect type thin film magnetic head | |
| JPH01285022A (en) | Production of perpendicular magnetic recording medium | |
| JP3103702B2 (en) | Magnetic head | |
| JPH0721513A (en) | Magnetic head | |
| JP2001155311A (en) | Magneto-resistance effect type thin film magnetic head | |
| JPH0778856B2 (en) | Magnetic head | |
| JPH02216604A (en) | Magnetic head and its production | |
| JPH0240117A (en) | Magnetic head | |
| JPH04341908A (en) | Composite magnetic head | |
| JPH04353611A (en) | Magnetoresistance effect-type head | |
| JPH04285701A (en) | Recording and reproducing method | |
| JPS59169187A (en) | Manufacture of magneto-resistance effect element | |
| JPH0760488B2 (en) | Magnetic head | |
| JPH03150711A (en) | Magnetic head | |
| JPH0765316A (en) | Magnetic head |