JP3055321B2 - Magnetic head and manufacturing method - Google Patents
Magnetic head and manufacturing methodInfo
- Publication number
- JP3055321B2 JP3055321B2 JP4240318A JP24031892A JP3055321B2 JP 3055321 B2 JP3055321 B2 JP 3055321B2 JP 4240318 A JP4240318 A JP 4240318A JP 24031892 A JP24031892 A JP 24031892A JP 3055321 B2 JP3055321 B2 JP 3055321B2
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- JP
- Japan
- Prior art keywords
- thin film
- magnetic alloy
- magnetic
- gap
- 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.)
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Description
【０００１】[0001]
【産業上の利用分野】本発明は高周波信号の記録再生に
適したメタル系の積層型磁気ヘッド及び製造法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-based laminated magnetic head suitable for recording and reproducing high-frequency signals and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】近年、ＶＴＲ等の高周波信号を記録再生
する磁気記録再生装置において、高密度化が進んでい
る。その手段としては記録信号の高周波帯域への移行
と、または、トラック幅を狭くする方法がある。高周波
帯域での性能を向上するために、高抗磁力媒体が使用さ
れる結果、磁気ヘッドのコアにアモルファス，センダス
ト等の高磁束密度特性を有するメタル系の磁性材が使用
されている。一般にメタル系の磁性材は固有抵抗が低い
ため、高周波帯域では渦電流損失が発生し磁気特性が低
下する欠点がある。2. Description of the Related Art In recent years, magnetic recording / reproducing apparatuses for recording / reproducing high-frequency signals such as VTRs have been increasing in density. As the means, there is a method of shifting a recording signal to a high frequency band or a method of narrowing a track width. As a result of using a high coercive force medium to improve the performance in a high frequency band, a metal magnetic material having a high magnetic flux density characteristic such as amorphous or sendust is used for a core of a magnetic head. Generally, a metal-based magnetic material has a low specific resistance, and thus has a drawback that eddy current loss occurs in a high frequency band and magnetic properties are deteriorated.
【０００３】対策として、バルク材を使わずスパッタや
蒸着等の工法により金属磁性材を薄膜化して、絶縁層を
介して積層し、所定のトラックにする積層構造が広く使
われている。As a countermeasure, a laminated structure in which a metallic magnetic material is thinned by a method such as sputtering or vapor deposition without using a bulk material, and laminated via an insulating layer to form a predetermined track is widely used.
【０００４】以下に従来の積層型磁気ヘッドについて説
明する。図９は磁気ヘッドの一例を示すものである。補
助基板１ａ，１ｂの間に磁性合金薄膜２と電気的、及
び、磁気的絶縁薄膜３を交互に所定のトラック幅になる
まで積層し積層コアの半体４とし、同様な積層コア５を
ギャップ材６を挟んで磁気ヘッドを構成する。７は積層
コア４，５を接合するためのガラスである。また、図１
０は最近のＶＴＲによく使われるコンビタイプの磁気ヘ
ッドで、トラック幅とギャップ傾斜角度の異なる２個の
ヘッドコアを一定のギャップ間隔８でベース９上に接着
されている。普通、ギャップ間隔８はＮＴＳＣ方式の場
合７４０μｍ、ＰＡＬ方式の場合６２０μｍと狭いた
め、図９に示したヘッドコアをそのまま貼り付けること
は不可能であり、図９に示すようにヘッドコア４を
ａ1，ａ2の切断線で切り取ったコアを使用する必要があ
る。[0004] A conventional laminated magnetic head will be described below. FIG. 9 shows an example of a magnetic head. The magnetic alloy thin film 2 and the electrical and magnetic insulating thin films 3 are alternately laminated between the auxiliary substrates 1a and 1b until a predetermined track width is obtained to form a laminated core half 4, and the similar laminated core 5 is formed into a gap. A magnetic head is formed with the material 6 interposed therebetween. Reference numeral 7 denotes glass for joining the laminated cores 4 and 5. FIG.
Numeral 0 denotes a combination type magnetic head often used in recent VTRs. Two head cores having different track widths and gap inclination angles are bonded on a base 9 at a constant gap interval 8. Normally, since the gap spacing 8 is narrow and if 620μm when 740Myuemu, PAL system NTSC system, is it not possible to apply directly bond the head core as shown in FIG. 9, a 1 the head core 4 as shown in FIG. 9, it is necessary to use a core taken along line of a 2.
【０００５】[0005]
【発明が解決しようとする課題】このように上記の従来
の構成では、コアの磁路全体の厚みがトラック幅と同じ
積層幅であるため、高密度記録のためにトラック幅を狭
くすると、磁路である積層幅も狭くなりコアの磁気抵抗
が増加し再生効率が低下するという問題を有していた。
更に図１０の如くコンビタイプのヘッドにするため図９
のようにコア４を切断線ａ1，ａ2で切断することにより
コア４の断面積１０は断面積１１と小さくなる。狭トラ
ック幅化により磁性合金膜の厚みが薄くなると断面積１
１も小さくなりコア４の磁気抵抗も更に増加し、ヘッド
の再生効率を大幅に低下させている原因となっている。
これは狭トラック幅においてより高再生出力を必要とす
る回路上の要求に対して積層タイプの磁気ヘッドの重要
課題の一つである。As described above, in the above-described conventional configuration, the thickness of the entire magnetic path of the core is the same lamination width as the track width. There is a problem that the lamination width, which is a path, becomes narrow, the magnetic resistance of the core increases, and the reproduction efficiency decreases.
Further, in order to obtain a combination type head as shown in FIG.
By cutting the core 4 along the cutting lines a 1 and a 2 as described above, the cross-sectional area 10 of the core 4 is reduced to the cross-sectional area 11. When the thickness of the magnetic alloy film is reduced by narrowing the track width, the cross-sectional area becomes 1
1 has also become smaller, the magnetic resistance of the core 4 has further increased, and this has caused a significant reduction in the reproducing efficiency of the head.
This is one of the important issues of the laminated type magnetic head in response to a demand for a circuit requiring a higher reproduction output in a narrow track width.
【０００６】本発明は上記従来の問題点を解決するもの
で、トラック幅が狭くなってもコアの磁気回路の磁気抵
抗を低下させることなく、有効にコイルに磁束を鎖交さ
せ、再生効率を低下させず高出力ヘッドを提供すること
を目的とする。The present invention solves the above-mentioned conventional problems. Even if the track width becomes narrow, the magnetic flux is effectively linked to the coil without reducing the magnetic resistance of the magnetic circuit of the core, and the reproduction efficiency is improved. An object is to provide a high output head without lowering.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に、本発明は、磁性合金薄膜と絶縁薄膜を交互に多層化
した磁性合金薄膜層を補助基板間に配した一対の積層コ
アーとギャップ材とを有する磁気ヘッドであって、前記
一対の積層コアーは前記磁性合金薄膜層が前記ギャップ
材を介して相対抗するように接合され、前記ギャップ材
が前記磁性合金薄膜の主面に対して垂直な面から所定の
ギャップ傾き角度をもって構成され、前記磁性合金薄膜
層が両側に密着して存在する部分の前記ギャップ材の前
記磁性合金薄膜に垂直な方向の寸法をトラック幅とし、
前記積層コアーのそれぞれの磁気ギャップ端の片面のみ
に、加工面の角度が前記磁性合金薄膜の主面に対して垂
直な面からギャップ傾き角度の少なくとも２倍以上とな
る切り欠きを設け、前記トラック幅は前記磁性合金薄膜
層の１層あたりの膜厚より大きく総膜厚より小さい、と
いう構成を有している。In order to achieve this object, the present invention provides a method of forming a magnetic alloy thin film and an insulating thin film alternately on a multilayer.
A pair of laminated cores in which the magnetic alloy thin film layer
A magnetic head having a lug and a gap material,
In the pair of laminated cores, the magnetic alloy thin film layer has the gap.
The gap material is joined so as to oppose each other through the material.
Is a predetermined from a plane perpendicular to the main surface of the magnetic alloy thin film
The magnetic alloy thin film is formed with a gap inclination angle;
In front of the gap material where the layer is in close contact on both sides
The dimension in the direction perpendicular to the magnetic alloy thin film is defined as the track width,
Only one side of each magnetic gap end of the laminated core
The angle of the processing surface is perpendicular to the main surface of the magnetic alloy thin film.
It should be at least twice as large as the gap tilt angle from a straight surface.
Notches, and the track width is the same as that of the magnetic alloy thin film.
Greater than the thickness per layer and less than the total thickness
It has a configuration in which say.
【０００８】[0008]
【作用】この構成によって、トラックより幅広の磁性合
金膜を磁路にすることにより、狭トラック幅ヘッドにお
いても再生効率の低下を極力少なくさせることができ
る。According to this structure, by using a magnetic alloy film having a width wider than that of the track as a magnetic path, a decrease in reproduction efficiency can be minimized even in a head having a narrow track width.
【０００９】[0009]
（実施例１）以下本発明の一実施例について、図面を参
照しながら説明する。(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１はヘッドをテープ接触面側から見た斜
視図である。図において、セラミックやガラスの非磁性
材である補助基板１ａ，１ｂの間に、アモルファスやセ
ンダスト等の磁性合金薄膜２と絶縁薄膜３と交互にスパ
ッタ技術または蒸着技術等により積層して、膜厚Ｔ2の
磁性合金膜１２を形成し積層コアの半体１３ａを形成す
る。磁性合金膜１２の片側の端面にはトラック幅１４に
ほぼ等しいギャップ面長さを残して切り欠け溝１５が施
されている。同様の積層コア１３ｂをギャップ材６を介
して前記磁性合金膜１２のギャップ面を突き合わせトラ
ック幅１４とするヘッドである。巻線１６は積層コア１
３ａ、または、積層コア１３ｂのどちらか片方または両
方の中央に設けられた巻線窓１７に巻かれている。１８
はこれらのヘッドをＶＴＲ本体に取り付けるためのベー
スである。本発明の磁気ヘッドの製造法の一実施例を図
２に基づいて説明する。図２は補助基板１ａ上にアモル
ファスやセンダスト等の磁性合金薄膜２とＳｉＯ2等の
絶縁薄膜３をスパッタ技術または蒸着技術等の薄膜形成
法で交互に積層させトラック幅より広い厚みの磁性合金
膜１２を形成し積層コアを作る。一般に磁性合金薄膜２
の厚みは使用する周波数で渦電流が発生したとき磁束が
流れる表皮深さより決定される。積層膜２の一層当たり
の膜厚の目安は表皮深さの２倍の厚さに考えるとよく周
波数帯域の上限を１０ＭＨｚ、透磁率２０００の場合表
皮深さは約４μｍとなり、一層当たりの膜厚としては８
μｍ程度以下にするとよいことになる。ＳＶＨＳヘッド
の場合、ＮＴＳＣの標準モードのヘッドではトラック幅
は５０μｍ、３倍モードでは２５〜３０μｍ付近である
が、各層の膜厚を均等にするため一層当たり膜厚の整数
倍がトラック幅になるように決めて積層している。スパ
ッタ技術等により所定の厚みまで積層された磁性合金膜
１２には接合材１９により補助基板１ｂと接合される。
磁性合金薄膜２がアモルファスの場合、接合材１９はア
モルファスの結晶化温度より低い融点である低融点ガラ
スが使用される。図３は生産上の効率を考慮して補助基
板１ａ，１ｂと磁性合金膜１２を複数個並べた積層ブロ
ック２０である。図４はギャップ面２１と摺動面２２と
磁性合金膜１２の少なくとも片側の一部を補助基板とと
もに切り欠け溝１５の加工を行いトラック幅規制する。
図５はギャップ面２１の一部だけに切り欠け溝加工をし
た場合で図４とは同じ効果が得られる。その後、切り欠
け溝の中にガラス等の非磁性材を充填しギャップ面を平
滑に仕上げる。図６はボンディング状態を示したもので
ある。図５で示した積層ブロック２０に巻線溝１０を加
工して積層ブロク２０ａとし、積層ブロック２０ａと同
じ加工を施した積層ブロック２０ｂをギャップ長に相当
する厚みのギャップ材６を介して重ね合わせ、加熱する
ことにより切り欠け溝１５内の低融点ガラスの一部を再
度溶融して両ブロックを接合してヘッドを形成する。図
７はギャップ面で接合した積層ブロックをテープ接触面
２２から見た場合である。FIG. 1 is a perspective view of the head viewed from the tape contact surface side. In the figure, a magnetic alloy thin film 2 such as amorphous or sendust and an insulating thin film 3 are alternately laminated between auxiliary substrates 1a and 1b, which are nonmagnetic materials such as ceramics and glass, by a sputtering technique or a vapor deposition technique. forming a magnetic alloy film 12 of T 2 to form the halves 13a of the laminated core. A cutout groove 15 is formed on one end surface of the magnetic alloy film 12 while leaving a gap surface length substantially equal to the track width 14. A head having a track width 14 is formed by abutting the same laminated core 13b with the gap surface of the magnetic alloy film 12 via the gap material 6. The winding 16 is the laminated core 1
It is wound around a winding window 17 provided at the center of one or both of the core 3a and the laminated core 13b. 18
Is a base for attaching these heads to the VTR body. One embodiment of a method for manufacturing a magnetic head according to the present invention will be described with reference to FIG. FIG. 2 shows a magnetic alloy film having a thickness wider than the track width obtained by alternately laminating a magnetic alloy thin film 2 such as amorphous or sendust and an insulating thin film 3 such as SiO 2 on the auxiliary substrate 1a by a thin film forming method such as a sputtering technique or a vapor deposition technique. 12 to form a laminated core. Generally magnetic alloy thin film 2
Is determined by the skin depth at which the magnetic flux flows when an eddy current is generated at the frequency to be used. Considering the thickness of one layer of the laminated film 2 as twice the thickness of the skin, the upper limit of the frequency band is often 10 MHz, and the skin depth is about 4 μm in the case of a magnetic permeability of 2,000. As 8
It is preferable that the thickness be about μm or less. In the case of the SVHS head, the track width is about 50 μm in the NTSC standard mode head and about 25 to 30 μm in the triple mode, but the track width is an integral multiple of the film thickness per layer in order to equalize the film thickness of each layer. It is determined as follows. The magnetic alloy film 12 laminated to a predetermined thickness by a sputtering technique or the like is joined to the auxiliary substrate 1b by a joining material 19.
When the magnetic alloy thin film 2 is amorphous, a low-melting glass having a melting point lower than the crystallization temperature of the amorphous is used as the bonding material 19. FIG. 3 shows a laminated block 20 in which a plurality of auxiliary substrates 1a and 1b and a plurality of magnetic alloy films 12 are arranged in consideration of production efficiency. In FIG. 4, at least a part of at least one side of the gap surface 21, the sliding surface 22, and the magnetic alloy film 12 is processed with the notch groove 15 together with the auxiliary substrate to regulate the track width.
FIG. 5 shows a case where a notch groove is formed only in a part of the gap surface 21, and the same effect as that in FIG. 4 can be obtained. Thereafter, a non-magnetic material such as glass is filled in the cutout groove to finish the gap surface smoothly. FIG. 6 shows the bonding state. The lamination block 20 shown in FIG. 5 is processed into the lamination block 20a by processing the winding groove 10 to form a lamination block 20a, and the lamination block 20b processed in the same manner as the lamination block 20a is superimposed via the gap material 6 having a thickness corresponding to the gap length. By heating, a part of the low melting point glass in the cutout groove 15 is melted again, and the two blocks are joined to form a head. FIG. 7 shows a case where the laminated block joined at the gap surface is viewed from the tape contact surface 22.
【００１１】磁性合金膜１２はギャップ面の垂線２３に
対し角度αだけ傾斜させてある。またトラック幅規制す
るための切り欠け溝の加工は加工面２４が疑似ギャップ
として作用しないようにギャップ面２５に対し角度βで
加工することにより隣接または隣接するトラックからの
信号を再生することが少なくなる。このときαとβは以
下の関係式を持つ。ｂ1とｂ2は切断線であり、各コアに
切断した後、ベース１８に図１のように接着した後、テ
ープ摺動面を研磨してヘッド化する。The magnetic alloy film 12 is inclined by an angle α with respect to a perpendicular 23 of the gap surface. Further, the notch groove for controlling the track width is processed at an angle β with respect to the gap surface 25 so that the processed surface 24 does not act as a pseudo gap, so that signals from adjacent or adjacent tracks are rarely reproduced. Become. At this time, α and β have the following relational expressions. b 1 and b 2 are cutting lines, after cutting each core, after bonding as shown in Figure 1 to the base 18, to the head by being polished tape sliding surface.
【００１２】図１１は図１で説明した本実施例による再
生効率の改善効果を従来例と比較して示している。ヘッ
ドはトラック幅を２０μｍとして磁性合金膜の膜厚を２
０〜８０μｍまで変えた時の再生効率を求めている。変
化量は磁性合金膜膜厚を２０μｍ、すなわち、従来例を
基準にしてｄＢ表示したものである。図１１から明らか
なようにトラック幅よりも幅広の磁性合金膜にてコアを
形成することにより、コアの磁気抵抗が低下し再生効率
がよくなる。本実施例によれば磁性合金膜の膜厚を標準
モードのトラック幅並の５０μｍにすることで約４ｄＢ
改善できる。FIG. 11 shows the effect of improving the reproduction efficiency according to the embodiment described with reference to FIG. 1 in comparison with the conventional example. The head has a track width of 20 μm and a magnetic alloy film thickness of 2 μm.
The reproduction efficiency when changing from 0 to 80 μm is required. The amount of change is the magnetic alloy film thickness of 20 μm, that is, a dB value based on the conventional example. As is apparent from FIG. 11, by forming the core with a magnetic alloy film wider than the track width, the magnetic resistance of the core is reduced and the reproduction efficiency is improved. According to the present embodiment, the thickness of the magnetic alloy film is set to about 4 dB by setting the thickness of the magnetic alloy film to 50 μm which is equal to the track width in the standard mode.
Can be improved.
【００１３】[0013]
【数２】 (Equation 2)
【００１４】（実施例２）以下本発明の第２の実施例に
ついて図面を参照しながら説明する。図８は本発明の第
２の実施例で積層ブロック２０のテープ摺動面２２から
見たものである。(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 8 shows the second embodiment of the present invention as viewed from the tape sliding surface 22 of the laminated block 20.
【００１５】図７の構成との相違点は積層ブロック２０
ｂに従来と同じタイプの磁性合金膜の膜厚をトラック幅
と同じ厚みにした積層ブロック２０ｃを使用した点であ
る。The difference from the configuration of FIG.
The point b is that a laminated block 20c in which the thickness of the magnetic alloy film of the same type as the conventional one is made the same as the track width is used.
【００１６】先に説明した図１０のようにコンビヘッド
を作る場合、図９のコア４側に本発明のコア２０ａを使
えば、切断線ａ1，ａ2で切断してコア断面積が狭くなっ
ても、磁性合金膜が厚いため磁気抵抗の増加は従来品よ
り少ない。When the combination head is manufactured as shown in FIG. 10 described above, if the core 20a of the present invention is used on the core 4 side in FIG. 9, the core is cut along the cutting lines a 1 and a 2 to reduce the core cross-sectional area. Even so, the increase in magnetic resistance is smaller than that of the conventional product due to the thick magnetic alloy film.
【００１７】[0017]
【発明の効果】以上のように本発明は、磁性合金薄膜と
絶縁薄膜とを積層して磁性合金膜の積層コアを構成する
ため高周波帯域でも渦電流損失の少ないヘッドが得られ
る。また、積層コアを幅広にとり切り欠け加工を入れ、
トラック部での磁束を絞り込んだ構成にしたため狭トラ
ック幅の時でも磁路の磁気抵抗が少ない効果がある。更
に、切り欠けを前記積層コアの磁性合金膜の片側だけに
加工するため、他方は補助基板で保持されており、加工
歪を受けやすい磁性合金膜でも無理な歪を受けることな
く加工でき、量産性に優れた高性能のヘッドを実現でき
るものである。さらに、積層コアーの切り欠き部の傾斜
をギャップ傾き角度の２倍以上とすることにより、隣接
するトラックからの信号を再生することが少なくなる。 As described above, according to the present invention, a magnetic alloy thin film and an insulating thin film are laminated to form a laminated core of a magnetic alloy film, so that a head having a small eddy current loss even in a high frequency band can be obtained. In addition, we take cutout processing by taking laminating core wide,
Since the magnetic flux in the track portion is narrowed down, there is an effect that the magnetic resistance of the magnetic path is small even when the track width is narrow. Further, since the notch is formed only on one side of the magnetic alloy film of the laminated core, the other is held by the auxiliary substrate, so that the magnetic alloy film which is easily subjected to processing distortion can be processed without being subjected to excessive strain. It is possible to realize a high-performance head with excellent performance. In addition, the inclination of the notch in the laminated core
Is more than twice the gap tilt angle,
Reproduction of a signal from a track to be reproduced is reduced.
【図１】本発明の第１の実施例における磁気ヘッドの斜
視図FIG. 1 is a perspective view of a magnetic head according to a first embodiment of the present invention.
【図２】第１の実施例における磁性合金膜構成図FIG. 2 is a configuration diagram of a magnetic alloy film according to the first embodiment.
【図３】第１の実施例における積層ブロックの斜視図FIG. 3 is a perspective view of a laminated block according to the first embodiment.
【図４】第１の実施例における積層ブロックの切り欠け
斜視図FIG. 4 is a cutaway perspective view of a laminated block in the first embodiment.
【図５】第１の実施例における積層ブロックの切り欠け
斜視図その２FIG. 5 is a cutaway perspective view of the laminated block in the first embodiment, part 2
【図６】第１の実施例における積層ブロックの斜視図FIG. 6 is a perspective view of a laminated block according to the first embodiment.
【図７】第１の実施例における積層ブロック正面図FIG. 7 is a front view of the laminated block according to the first embodiment.
【図８】第２の実施例における積層ブロック正面図FIG. 8 is a front view of a laminated block according to a second embodiment.
【図９】従来の積層タイプの磁気ヘッドのコアの正面図
と側面図FIG. 9 is a front view and a side view of a core of a conventional laminated magnetic head.
【図１０】従来のコンビタイプの磁気ヘッドの平面図FIG. 10 is a plan view of a conventional combination type magnetic head.
【図１１】第１の実施例による再生効率の改善効果を示
すグラフFIG. 11 is a graph showing the effect of improving the reproduction efficiency according to the first embodiment.
１ａ，１ｂ 補助基板 ２ 磁性合金薄膜 ３ 絶縁薄膜 ６ ギャップ材 １２ 磁性合金膜 １３ａ，１３ｂ 積層コア １４ トラック幅 １５ 切り欠け溝 １６ 巻線 １７ 巻線窓 １８ ベース １９ 結合材 1a, 1b Auxiliary substrate 2 Magnetic alloy thin film 3 Insulating thin film 6 Gap material 12 Magnetic alloy film 13a, 13b Laminated core 14 Track width 15 Notch groove 16 Winding 17 Winding window 18 Base 19 Binding material
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−269809（ＪＰ，Ａ) 特開 昭62−139109（ＪＰ，Ａ) 特開 平５−101321（ＪＰ，Ａ) 特開 昭54−3513（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G11B 5/127 - 5/255 G11B 5/31 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-269809 (JP, A) JP-A-62-139109 (JP, A) JP-A-5-101321 (JP, A) JP-A 54-1979 3513 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) G11B 5/127-5/255 G11B 5/31
Claims (1)
した磁性合金薄膜層を補助基板間に配した一対の積層コ
アーとギャップ材とを有する磁気ヘッドであって、 前記一対の積層コアーは前記磁性合金薄膜層が前記ギャ
ップ材を介して相対抗するように接合され、 前記ギャップ材は前記磁性合金薄膜の主面に対して垂直
な面から所定のギャップ傾き角度をもって構成され、 前記ギャップ材の両側に前記磁性合金薄膜層が密着して
存在する部分の前記ギャップ材の前記磁性合金薄膜の主
面に垂直な方向の寸法をトラック幅とし、 前記積層コアーのそれぞれの磁気ギャップ端の片面のみ
に、加工面の角度が前記磁性合金薄膜の主面に対して垂
直な面からギャップ傾き角度の少なくとも２倍以上とな
る切り欠きを設け、 前記トラック幅は前記磁性合金薄膜層の１層あたりの膜
厚より大きく総膜厚より小さいことを特徴とする磁気ヘ
ッド。 1. A magnetic alloy thin film and an insulating thin film are alternately multilayered.
A pair of laminated cores in which the magnetic alloy thin film layer
A magnetic head having a gap and a gap material, wherein the pair of laminated cores comprises
The gap material is joined so as to oppose each other via a gap material , and the gap material is perpendicular to the main surface of the magnetic alloy thin film.
Is formed with a predetermined gap inclination angle from a flat surface, and the magnetic alloy thin film layer is in close contact with both sides of the gap material.
The main part of the magnetic alloy thin film of the gap material in the existing portion
The track width is the dimension in the direction perpendicular to the surface, and only one surface of each magnetic gap end of the laminated core
The angle of the processing surface is perpendicular to the main surface of the magnetic alloy thin film.
It should be at least twice as large as the gap tilt angle from a straight surface.
Notches, and the track width is equal to the film thickness of one layer of the magnetic alloy thin film layer.
Characterized by being larger than the thickness and smaller than the total thickness.
Good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4240318A JP3055321B2 (en) | 1992-09-09 | 1992-09-09 | Magnetic head and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4240318A JP3055321B2 (en) | 1992-09-09 | 1992-09-09 | Magnetic head and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0689407A JPH0689407A (en) | 1994-03-29 |
| JP3055321B2 true JP3055321B2 (en) | 2000-06-26 |
Family
ID=17057687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4240318A Expired - Fee Related JP3055321B2 (en) | 1992-09-09 | 1992-09-09 | Magnetic head and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3055321B2 (en) |
-
1992
- 1992-09-09 JP JP4240318A patent/JP3055321B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0689407A (en) | 1994-03-29 |
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