JPS62262209A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS62262209A JPS62262209A JP10463186A JP10463186A JPS62262209A JP S62262209 A JPS62262209 A JP S62262209A JP 10463186 A JP10463186 A JP 10463186A JP 10463186 A JP10463186 A JP 10463186A JP S62262209 A JPS62262209 A JP S62262209A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic alloy
- alloy film
- core
- groove
- 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
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 45
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 17
- 230000035699 permeability Effects 0.000 claims abstract description 16
- 239000010408 film Substances 0.000 claims description 42
- 230000004907 flux Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000010409 thin film Substances 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000011162 core material Substances 0.000 description 28
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910020641 Co Zr Inorganic materials 0.000 description 1
- 229910020676 Co—N Inorganic materials 0.000 description 1
- 229910020520 Co—Zr Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】 本発明は配線および再生用磁気ヘッドに係り。[Detailed description of the invention] The present invention relates to wiring and a magnetic head for reproduction.
特に、高飽和磁束密度を有する磁性合金膜を用いて磁気
コアを構成したＶＴＲ用磁気ヘッドに関する。In particular, the present invention relates to a magnetic head for a VTR whose magnetic core is constructed using a magnetic alloy film having a high saturation magnetic flux density.
（従来技術とその問題点）
従来より、磁気へノドコアを構成する磁性材料として、
高飽和磁束密度を有する金属磁性体を用いた磁気ヘッド
が使用されていた。最近では、特に高保磁力磁気記録媒
体用ビデオヘッドとして薄膜形成技術を用いて形成した
磁性合金膜をコア材とする磁気ヘッドの検討が盛んに行
なわれるようになった。この種の磁気ヘッドとしては第
１図。(Prior art and its problems) Conventionally, magnetic materials constituting magnetic cores have been used.
A magnetic head using a magnetic metal material having a high saturation magnetic flux density has been used. Recently, studies have been actively conducted on magnetic heads whose core material is a magnetic alloy film formed using a thin film formation technique, particularly as a video head for high coercivity magnetic recording media. FIG. 1 shows this type of magnetic head.
第２図に示すものが提案されている。What is shown in FIG. 2 has been proposed.
膜１１を形成し、さらにそのようにもう一方の非磁性基
板１０′を接着し、これを分割して、コイル巻線窓１２
を設け１次にギャンプ形成面を鏡面研磨した後、非磁性
膜を介して接合して磁気ヘッドコアとし、あるいは数個
取りのコアブロックとし、これから磁気ヘッドコアを切
り出したものである。このように平面的に形成する磁気
ヘッドは１個１個を突き合わせる方法によって作製せざ
るを得ないので、生産性が低く、また、製品の特性ばら
つきが大きいという欠点があった。A film 11 is formed, another non-magnetic substrate 10' is bonded in this manner, and this is divided to form a coil winding window 12.
After first mirror-polishing the gap-forming surface, a magnetic head core is formed by bonding them together via a non-magnetic film, or a core block is formed from several core blocks, from which the magnetic head core is cut. Magnetic heads formed in a planar manner as described above must be manufactured by a method of butting them one by one, which has the drawbacks of low productivity and large variations in product characteristics.
また、第３図に示す磁気ヘッドは、従来の高透磁率フェ
ライトコア２０．２０’の作動ギャップ近傍部が磁気的
に飽和しないようにするために１作動ギャップ２１の近
傍部のみを高飽和磁束密度を有する磁性合金膜２２．２
２’をもって構成した。いわける複合型磁気ヘッドであ
る。このような構造の磁気ヘッドは、前者に比して生産
性は格段に良好であるが、特性上９次のような欠点があ
る。すなわち。In addition, in the magnetic head shown in FIG. 3, in order to prevent the area near the working gap of the conventional high permeability ferrite core 20, 20' from being magnetically saturated, only the area near one working gap 21 is exposed to high saturation magnetic flux. Magnetic alloy film 22.2 with density
2'. This is a complex magnetic head. Although the magnetic head having such a structure has much better productivity than the former, it has a drawback of the ninth order in terms of characteristics. Namely.
フェライトと性合金膜の境界部２３． Ｚ３’が作動ギ
ャップ２１と平行部を有すると、境界部が疑似ギャップ
として作動し、再生出力が波打つコンタ−効果が発生す
る。Boundary area between ferrite and alloy film 23. When Z3' has a portion parallel to the working gap 21, the boundary portion acts as a pseudo gap, producing a contour effect in which the reproduced output waves.
一方、磁気記録の高密度化の進度に伴ってトラック幅の
狭小化が進み、近年ではＶＴＲ用磁気ヘッドのトランク
幅は３０μｍ以下と極めて小さいものどなっている。こ
のような小さいトラック幅を有する磁気ヘッドにおいて
は、磁気コアの総厚をトランク幅よりも犬とすることに
より、磁気抵抗を減じて磁気ヘッドの再生感度を増加さ
せることが一般に行なわれている。On the other hand, as the density of magnetic recording increases, the track width becomes narrower, and in recent years, the trunk width of magnetic heads for VTRs has become extremely small, at 30 μm or less. In a magnetic head having such a small track width, the total thickness of the magnetic core is generally made smaller than the trunk width to reduce magnetic resistance and increase the reproduction sensitivity of the magnetic head.
第１図、第２図に示した磁気ヘッドは、このようなヘッ
ドコアの厚さよりもトランク幅を狭くした磁気ヘッド（
以後狭トラツクヘッドと称する）とはなっておらず、再
生感度が低くなる恐れがある。The magnetic head shown in Figures 1 and 2 is a magnetic head (with a trunk width narrower than the thickness of the head core).
It is not a narrow track head (hereinafter referred to as a narrow track head), and there is a risk that the playback sensitivity will be low.
（目的）
本発明の目的は前記従来の欠点を解消し、高飽和磁束密
度を有する磁性合金膜を用いた磁気ヘッドにおいて、良
好な記録再生特性を有し、かつ量産性に適した狭トラツ
ク磁気ヘッドを提供することにある。(Objective) The object of the present invention is to solve the above-mentioned conventional drawbacks, and to provide a magnetic head using a magnetic alloy film having a high saturation magnetic flux density, which has a narrow track magnetic field that has good recording and reproducing characteristics and is suitable for mass production. The purpose is to provide the head.
（実施例）
本発明は高飽和磁束密度を有する磁性合金膜を、用いた
磁気ヘッドにおいて、磁気コアが磁性合金膜と高透磁率
フェライトからなり、前記高透磁率フェライトコアの作
動ギャップ近傍部に三角形の溝を設け、該溝に前記磁性
合金膜が埋め込まれ。(Embodiment) The present invention provides a magnetic head using a magnetic alloy film having a high saturation magnetic flux density, in which the magnetic core is made of a magnetic alloy film and a high magnetic permeability ferrite, and a portion near the working gap of the high magnetic permeability ferrite core is provided. A triangular groove is provided, and the magnetic alloy film is embedded in the groove.
作動ギャップを介して前記磁性合金膜が相対峙し。The magnetic alloy films face each other with a working gap interposed therebetween.
かつ磁性合金膜コアの最大幅よりもトラック幅を狭くし
た形状となるように構成した磁気ヘッドである。The magnetic head is configured such that the track width is narrower than the maximum width of the magnetic alloy film core.
したがって、大きな高透磁率フェライトブロックに多数
の三角溝を形成し、この溝に周知の薄膜形成技術を用い
て磁性合金膜を埋め込み、溝の一端部（上部）がギャッ
プ突き合わせ部となり、従来のフェライト磁気ヘッドの
製造工程の大部分がそのまま使用可能となり、同時に多
数の磁気ヘッドコアが得られる。Therefore, a large number of triangular grooves are formed in a large high-permeability ferrite block, and a magnetic alloy film is embedded in these grooves using a well-known thin film formation technology. Most of the magnetic head manufacturing process can be used as is, and a large number of magnetic head cores can be obtained at the same time.
以下、実施例により本発明の磁気ヘッドの構造の特徴お
よびその製造方法を詳細に説明する。Hereinafter, the features of the structure of the magnetic head of the present invention and the manufacturing method thereof will be explained in detail using Examples.
本発明の代表例を示す磁気ヘッドの斜視図を第゛１図（
ａｔに、またテープ摺動面の構造を第１図（ｂ）にそれ
ぞれ示す。３０．３０’は高透磁率フェライトコア。A perspective view of a magnetic head showing a typical example of the present invention is shown in FIG.
The structure of the tape sliding surface is shown in FIG. 1(b). 30.30' is a high permeability ferrite core.
３１、３１’は磁性合金膜埋め込み用の溝である。３２
．３２’は高飽和磁束密度を有する磁性）金膜であり、
スパツタリングあるいは真空蒸着等の手段で前記埋め込
み溝中に形成される。３３．３３’はコア接合用の接着
剤であり、樹脂もしくはガラスが用いられる。31 and 31' are grooves for embedding the magnetic alloy film. 32
．． 32' is a magnetic) gold film having a high saturation magnetic flux density,
It is formed in the buried trench by sputtering, vacuum evaporation, or the like. 33.33' is an adhesive for core bonding, and resin or glass is used.
３４、３４’は前記接着材充填用の溝であり、前記磁性
合金膜埋め込み用溝の一部を切り欠くように設けられる
。３５は作動ギャップ、３６はコイル巻線窓である。34 and 34' are grooves for filling the adhesive material, and are provided so as to cut out a part of the groove for embedding the magnetic alloy film. 35 is an operating gap, and 36 is a coil winding window.
第１図（ｂ）に示すように、前記磁性合金膜３２．３２
’は作動ギャップ３５を介して相対峙するように配置さ
れる。また、前記磁性合金膜埋め込み用溝３１．３１’
は端部が作動ギャップ３５に対して傾斜しており。As shown in FIG. 1(b), the magnetic alloy film 32, 32
' are arranged to face each other with an operating gap 35 in between. Further, the magnetic alloy film embedding groove 31, 31'
The end thereof is inclined with respect to the working gap 35.
該埋め込み用構に充填さ庇た磁性合金膜の端縁と作動ギ
ャップが平行部を持たないようになっている。さらに、
接着剤充填用溝３４．３４’を作動ギャップ近傍部にお
いて前記埋め込み用溝３１．３１’の一部を切り欠くよ
うに設けることにより、磁気コアのトランク幅ｔｗは磁
性合金膜が充填された前記埋め込み用溝３１．３１’の
最大幅Ｔよりも小さく、狭トラツク磁気へノドとなって
いる。The edges of the magnetic alloy film filled in the embedded structure and the operating gap do not have parallel parts. moreover,
By providing the adhesive filling groove 34.34' in the vicinity of the working gap by cutting out a part of the embedding groove 31.31', the trunk width tw of the magnetic core can be increased by forming the adhesive filling groove 34.34' near the working gap. It is smaller than the maximum width T of the embedding groove 31, 31', and forms a narrow track leading to the magnetic field.
前記磁性合金膜は飽和磁束密度が高く（好ましくは８ｋ
Ｇ以上）、かつ磁歪が０付近の高透磁率材料であれば何
でもよいが９代表的なものとしては周知のＦｅ−３ｉ合
金、Ｆｅ−Ａｌ−３ｉ合金（いわゆるセンダスト系合金
）、Ｆｅ−Ｎｉ合金（いわゆるパーマロイ系合金）およ
び各種の高透磁率非晶質合金（Ｃｏ−Ｚｒ系、Ｃｏ−Ｎ
ｂ−Ｚｒ系、Ｃｏ−Ｔａ−Ｚｒ系、Ｃ０−Ｆｅ−３ｉＢ
系等）を挙げることができる。The magnetic alloy film has a high saturation magnetic flux density (preferably 8k
G or higher) and a high magnetic permeability material with magnetostriction near 0.9 Typical examples include the well-known Fe-3i alloy, Fe-Al-3i alloy (so-called sendust alloy), Fe-Ni alloys (so-called permalloy alloys) and various high permeability amorphous alloys (Co-Zr series, Co-N
b-Zr system, Co-Ta-Zr system, C0-Fe-3iB
system, etc.).
一方、前記磁性合金膜とともに磁気コアを構成する高透
磁率フェライト材料にはＭｎ −Ｚｎフェライトもしく
はＮｉ−Ｚｎフェライトが用いられる。On the other hand, Mn--Zn ferrite or Ni--Zn ferrite is used as the high magnetic permeability ferrite material that constitutes the magnetic core together with the magnetic alloy film.
第４図は本発明の磁気ヘッドを製造する工程の実施例を
示す。工程順を示す（イ）等はそれぞれ第４図の（イ）
等に対応する。FIG. 4 shows an embodiment of the process for manufacturing the magnetic head of the present invention. (A) etc. showing the process order are respectively (A) in Figure 4.
etc.
（イ）高透磁率フェライトからなる一組の直方体ブロッ
ク４０．４０’ （第４図（イ）において後述の溝４２
．４２’。(a) A pair of rectangular parallelepiped blocks 40, 40' made of high magnetic permeability ferrite (grooves 40 and 40', which will be described later in Fig. 4 (a))
．． 42'.
４３が形成される以前のブロック）を用意する。幅ａは
コア幅の半分で約１．５ｍ、長さｂはコア厚みで約０．
５１１１１（４個取りの長さが示しである）、厚みＣは
コア高さで約２．５１１１１１．それぞれ加工代を含め
た寸法である。該−組の直方体ブロック４０．４０’の
ギャップ突き合わせ側の面４１．４１’にそれぞれ、磁
性合金膜を埋め込むための溝４２および４２ヲ一定の間
隔で複数個設ける。該埋め込み用溝４２および４２′は
その断面が三角形で、かつ上部の溝幅が磁気コアのトラ
ック幅よりも大きくなるよう（通常２〜３倍）に形成さ
れる。この結果ギャップ突き合わせ面に対して溝の端部
は傾斜しており、該埋め込み用溝に充填された磁性合金
膜の端縁と作動ギャップが平行部を持たないようにアジ
マス損失を与え、磁性合金膜端部が疑似ギャップとして
作動しないようにしている。溝先端部の角度θは４５°
〜１２０°の範囲とした。溝の加工は砥石または、マス
クエツチングにより行なわれる。また、一方の直方体ブ
ロック面４１にコイル巻線用溝４３を設ける。43) is prepared. The width a is half the core width, which is approximately 1.5m, and the length b is the core thickness, which is approximately 0.
51111 (the length of the four-piece cutout is shown), and the thickness C is approximately 2.511111 at the core height. Each dimension includes machining allowance. A plurality of grooves 42 and 42 for embedding the magnetic alloy film are provided at regular intervals on the surfaces 41 and 41' of the rectangular parallelepiped blocks 40 and 40' on the gap matching side, respectively. The embedding grooves 42 and 42' have a triangular cross section and are formed so that the groove width at the top is larger (usually 2 to 3 times) than the track width of the magnetic core. As a result, the end of the groove is inclined with respect to the gap abutting surface, giving azimuth loss so that the edge of the magnetic alloy film filled in the embedding groove and the working gap do not have parallel parts, and This prevents the membrane edge from acting as a false gap. The angle θ of the groove tip is 45°
The range was 120°. The grooves are formed using a grindstone or mask etching. Furthermore, a coil winding groove 43 is provided on one rectangular parallelepiped block surface 41.
（ロ） 次に前記溝４２および４２′に９例えばセンダ
ストあるいは各種の非晶質磁性合金からなる磁性合金膜
４４および必′をスパッタリングあるいは蒸着等の薄膜
形成技術により形成する。(b) Next, a magnetic alloy film 44 made of, for example, sendust or various amorphous magnetic alloys is formed in the grooves 42 and 42' by a thin film forming technique such as sputtering or vapor deposition.
（ハ）次に上記の磁性膜形成工程で生じた余分の磁性合
金膜を研削、研磨等によって除去したのち９鏡面研磨し
てギャップ突き合わせ面４５．４５’を形成する。(c) Next, the excess magnetic alloy film produced in the above magnetic film forming step is removed by grinding, polishing, etc., and mirror polishing is performed to form gap abutting surfaces 45 and 45'.
に）次に前記ギャップ突き合わせ面４５．４５’の一陵
部に接着剤充填用溝４６．４６’を設ける。該充填用溝
４６、４６’は作動ギャップ近傍部において前記磁性合
金膜４４．４４’の一部を切り欠き１作動ギヤツブ突き
合わせ部における磁性合金膜の幅が所望のトラック幅と
等しく、かつ前記埋め込み溝中の磁性合金膜の最大幅Ｔ
ｗがトラック幅ｔｗよりも大きくなるように形成される
。この時、前記充填用溝４６．４６’の端部には傾斜を
設け１作動ギャップと平行部を持たないようにする。ま
た、該充填用溝は前記コイル巻線用溝４３に達する深さ
とする。(b) Next, an adhesive filling groove 46.46' is provided in one ridge of the gap abutment surface 45.45'. The filling grooves 46, 46' are formed by cutting out a part of the magnetic alloy film 44, 44' in the vicinity of the working gap so that the width of the magnetic alloy film at the abutting part of one working gear is equal to the desired track width, and the filling groove 46, 46' Maximum width T of magnetic alloy film in groove
It is formed so that w is larger than the track width tw. At this time, the ends of the filling grooves 46 and 46' are sloped so as not to have one working gap and a parallel part. Further, the filling groove has a depth that reaches the coil winding groove 43.
（ホ）次に上記工程で得られた一組の磁気コア半休ブロ
ック４７．４７’のギャップ形成面に所定厚みの非磁性
ギヤノブ材を形成した後、前記接着剤充填用溝４６．４
６’が一致するように両者を互いに突き合わせ、これに
よって生じた接着剤充填用穴４８に樹脂もしくはガラス
等の接着剤４９を充填し、加圧しながら加熱して接合し
、磁気ヘッドコアブロック５０を形成する。この時補強
材として、コイル巻線窓５１の一部にも接着剤を充填す
ることにより接着強度を高めることができる。(E) Next, after forming a non-magnetic gear knob material of a predetermined thickness on the gap forming surface of the pair of magnetic core half-dead blocks 47.47' obtained in the above process, the adhesive filling groove 46.4 is formed.
The two are butted against each other so that the edges 6' are aligned, and the resulting adhesive filling hole 48 is filled with an adhesive 49 such as resin or glass, and the magnetic head core block 50 is bonded by heating while applying pressure. Form. At this time, adhesive strength can be increased by filling a portion of the coil winding window 51 with adhesive as a reinforcing material.
次に点線部で切断して（へ）に示すような一個の磁気へ
ラドチップ５２を得る。Next, it is cut along the dotted line to obtain one magnetic Rad chip 52 as shown in (v).
第５図（ａ）〜（ｃ）は種々の溝形状および加工方法の
説明図である。磁性合金膜埋め込み用の三角溝は。FIGS. 5(a) to 5(c) are explanatory diagrams of various groove shapes and processing methods. Triangular groove for embedding magnetic alloy film.
第５図（ａ）に示すような先端がＶ字状の成形砥石を用
いて簡単に加工できる。砥石の厚みは所望のトラック幅
の３倍程度あれば良く、それ以上でもよい。該三角溝の
幅は通常トラック幅の２〜３倍。It can be easily processed using a shaped grindstone with a V-shaped tip as shown in FIG. 5(a). The thickness of the grindstone may be approximately three times the desired track width, or may be thicker. The width of the triangular groove is usually 2 to 3 times the track width.
また深さは５０μｍ程度でよいが、加工は図のように砥
石のＶ字状先端部のみで行なうこととする。The depth may be approximately 50 μm, but processing is performed only with the V-shaped tip of the grindstone as shown in the figure.
接着剤充填用溝の形状は、第５図（ｂ）に示すような三
角形あるいは第５図（ｃ）に示すような円弧状とする。The shape of the adhesive filling groove is triangular as shown in FIG. 5(b) or arcuate as shown in FIG. 5(c).
この時、２個の充填用溝に狭まれた磁性合金膜の幅ｔｗ
が所定のトラック幅と一致するように加工する。この溝
加工も先端をＶ字状もしくは半円状に成形した砥石を用
いて容易に行なえる。At this time, the width tw of the magnetic alloy film narrowed between the two filling grooves
is processed so that it matches the predetermined track width. This groove machining can also be easily performed using a grindstone whose tip is shaped into a V-shape or semicircle.
（効果）
以上述べたごとく１本発明によれば高飽和磁束密度を有
する磁性合金膜を用いた磁気ヘッドにおいて、磁気コア
が磁性合金膜と高透磁率７エライトからなり、前記高透
磁率フェライトコアの作動ギャップ近傍部に三角形の溝
を設け、波溝に前記磁性合金膜が埋め込まれ１作動ギャ
ップを介して前記磁性合金膜が相対峙し、かつ磁性合金
膜コアの最大幅よりもトラック幅を狭くした形状となる
ように構成された構造を有するため、コンタ−効果が無
視でき、高保磁力磁気記録媒体に対しても優れた記録再
生特性を有する狭トラツク磁気ヘッドが容易に得られ、
量産適性も高い。(Effects) As described above, according to the present invention, in a magnetic head using a magnetic alloy film having a high saturation magnetic flux density, the magnetic core is made of a magnetic alloy film and a high magnetic permeability 7-elite, and the high magnetic permeability ferrite core A triangular groove is provided in the vicinity of the working gap, and the magnetic alloy film is embedded in the corrugated groove so that the magnetic alloy film faces each other across one working gap, and the track width is smaller than the maximum width of the magnetic alloy film core. Since the structure has a narrow shape, the contour effect can be ignored, and a narrow track magnetic head having excellent recording and reproducing characteristics even for high coercivity magnetic recording media can be easily obtained.
Highly suitable for mass production.
第１図（ａ）、 （ｂｌは本発明の代表的な実施例にお
ける磁気ヘッドの斜視図および磁気テープ摺動面の拡大
図、第２図、第３図は従来の磁気ヘッドの斜視図、第４
図印〜（へ）は本発明の磁気ヘッドの製造工程の説明図
、第５図（ａ）、 （ｂ）、 （Ｃ）は本発明の実施例
における種々め溝の形状および加工方法の説明図である
。
（資）、３０′：高透磁率フェライトコア、 ３１．
３１’ ：磁性合金膜埋め込み用の溝、 ３２．３２
’ ：高飽和磁束密度を有する磁性合金膜。
第１図
（Ｏ）（ｂ）
力
第２図 第３図
（ホ） （へ）
第５図
第
（イ）
（ハ）
４図
（ロ）
（ニ）
Ｔ、。1(a), (bl is a perspective view of a magnetic head in a typical embodiment of the present invention and an enlarged view of a magnetic tape sliding surface, FIGS. 2 and 3 are perspective views of a conventional magnetic head, Fourth
Figures 5 to 5 are explanatory diagrams of the manufacturing process of the magnetic head of the present invention, and FIGS. It is a diagram. (Capital), 30': High magnetic permeability ferrite core, 31.
31': Groove for embedding magnetic alloy film, 32.32
': Magnetic alloy film with high saturation magnetic flux density. Figure 1 (O) (b) Force Figure 2 Figure 3 (E) (F) Figure 5 (A) (C) Figure 4 (B) (D) T.
Claims (1)
ッドにおいて、磁気コアが磁性合金膜と高透磁率フェラ
イトからなり、前記高透磁率フェライトコアの作動ギャ
ップ近傍部に三角形の溝を設け、該溝には蒸着あるいは
スパッタリング等の薄膜形成技術によって形成された前
記磁性合金膜が埋め込まれてなり、作動ギャップを介し
て前記磁性合金膜が相対峙し、かつ磁性合金膜コアの最
大幅よりもトラック幅を狭くした形状となるように構成
された構造を有することを特徴とする磁気ヘッド。 ２、前記磁性合金膜は非晶質磁性合金からなることを特
徴とする特許請求の範囲第１項記載の磁気ヘッド。[Claims] 1. In a magnetic head using a magnetic metal material having a high saturation magnetic flux density, the magnetic core is made of a magnetic alloy film and a high magnetic permeability ferrite, and a portion near the working gap of the high magnetic permeability ferrite core is provided. A triangular groove is provided, and the magnetic alloy film formed by a thin film forming technique such as vapor deposition or sputtering is embedded in the groove, and the magnetic alloy film faces each other through a working gap. A magnetic head characterized by having a structure configured to have a track width narrower than the maximum width of the core. 2. The magnetic head according to claim 1, wherein the magnetic alloy film is made of an amorphous magnetic alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10463186A JPS62262209A (en) | 1986-05-09 | 1986-05-09 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10463186A JPS62262209A (en) | 1986-05-09 | 1986-05-09 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62262209A true JPS62262209A (en) | 1987-11-14 |
Family
ID=14385792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10463186A Pending JPS62262209A (en) | 1986-05-09 | 1986-05-09 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62262209A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02110804A (en) * | 1988-10-20 | 1990-04-24 | Sanyo Electric Co Ltd | Production of magnetic head |
| US5001588A (en) * | 1989-06-30 | 1991-03-19 | Ampex Corporation | Composite core magnetic transducer having a wedge shaped core portion |
| US5043842A (en) * | 1988-05-17 | 1991-08-27 | Ngk Insulators, Ltd. | Magnetic head core with special gap structure |
-
1986
- 1986-05-09 JP JP10463186A patent/JPS62262209A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043842A (en) * | 1988-05-17 | 1991-08-27 | Ngk Insulators, Ltd. | Magnetic head core with special gap structure |
| JPH02110804A (en) * | 1988-10-20 | 1990-04-24 | Sanyo Electric Co Ltd | Production of magnetic head |
| US5001588A (en) * | 1989-06-30 | 1991-03-19 | Ampex Corporation | Composite core magnetic transducer having a wedge shaped core portion |
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