JPS61250810A - Magnetic head and its production - Google Patents

Abstract

PURPOSE:To decrease the generation of a contour effect and to eliminate uneven wear by providing notches to the top end in the projecting part of a substrate, packing a nonmagnetic material having the intermediate wear rate between the wear rates of the substrate material and magnetic films into the notched parts and making the boundary line between the nonmagnetic material and the substrate non-parallel with a gap. CONSTITUTION:Core blocks 30, 30' each provided with a V-shaped projecting part are constituted of ferrite or nonmagnetic ferrite, ceramics, etc. The nonmagnetic metal, glass, ceramics or the like having the wear characteristic different from the wear characteristic of the substrate material is packed into the notched parts 31, 31'. The boundary line between the nonmagnetic material and the substrate material is made non-parallel with the working gap. A soft magnetic material such as 'Permalloy(R)' alloy, 'Sendust(R)' alloy or amorphous alloy which is formed as a thin film is used for the magnetic metallic films 32, 32' constituting the head cores. The core blocks are adhered by the packed glass 33, for which low melting lead glass is used. The working gap 34 is formed by butting the blocks in such a manner that the V-shaped magnetic metallic films having the flat parts corresponding to the track width provide the required gap length with the non magnetic film in-between.

Description

【発明の詳細な説明】 〔発明の利用分野〕１５ 本発明はビテオテーブレコーダ等の高周波信。[Detailed description of the invention] [Field of application of the invention] 15 The present invention is applicable to high frequency signals such as video table recorders.

号を記録再生する磁気ヘッドに係り、特に高保。Regarding magnetic heads that record and reproduce numbers, especially Takayasu.

出力記録媒体に好適な金属磁性膜を用いた磁気。Magnetism using a metal magnetic film suitable for output recording media.

ヘッド及びその製造方法に関する。This invention relates to a head and its manufacturing method.

【発明の背景〕[Background of the invention]

近年、磁気記録の高密度化に伴い、高保磁力“記録媒体
に充分記録できる軟磁性合金を磁気コ。In recent years, with the increase in the density of magnetic recording, soft magnetic alloys with high coercive force that can sufficiently record on recording media are being used for magnetic recording.

アとした磁気ヘッドが必要となっている。　　　。A highly sophisticated magnetic head is now required.　　　.

これら磁気ヘッドの例として特開昭５１−１４’０７０
８号公報に記載されているようにつまり第１５図に示す
如く７エライ）　１０　、１０’のギヤツブ対゛向面に
フェライトより飽和磁束密度の高い金属。As an example of these magnetic heads, JP-A-51-14'070
As described in Japanese Patent Application No. 8, that is, as shown in FIG.

磁性膜１１　ｊ１１’を設けた磁気ヘッドが提案され゛
ている。この磁気ヘッドは金属磁性膜と７エラ゛イトの
境界部が疑似ギヤジグとして作用するたＩＯめに作動ギ
ャップとの相互作用により記録再生゛特性を損５いわゆ
るコンタ−効果について考慮。A magnetic head provided with a magnetic film 11j11' has been proposed. In this magnetic head, since the boundary between the metal magnetic film and the 7-elite acts as a pseudo gear jig, the so-called contour effect is considered, which causes loss of recording and reproducing characteristics due to interaction with the IO gap.

されていない。また臀曲昭６５−８７５２０号公報に。It has not been. Also, in the publication No. 65-87520.

記載されているようにつまり第２図に示す如く。As described, and as shown in FIG.

金属磁性膜＠　２０　、２０’を非磁性材２１．２１’
で挾１５んだ構造の磁気ヘッドが提案されている。この
・構造の磁気ヘッドは前述したコンタ−効果にっ・いて
は配属されているも、チー１走行において・金属磁性板
２０　、２０’が非磁性材２１　、２１’よりも・へこ
み、スベーシンクロスにより再生特性が％　２［１・　
６　・ 化するいわゆる偏摩耗について考慮されていな。Metal magnetic film @ 20, 20' with non-magnetic material 21, 21'
A magnetic head with a sandwiched structure has been proposed. Although the magnetic head with this structure is allotted to the contour effect described above, when the first movement is carried out, the metal magnetic plates 20, 20' are more dented than the non-magnetic materials 21, 21'. Due to synchronization, playback characteristics are improved by %2 [1.
6. No consideration is given to the so-called uneven wear that occurs.

い。これを防止するためには非磁性材を金属磁゛性板よ
りも軟らか（シ、摩耗速度を速くしてや゛ればよいがヘ
ッド寿命が短くなるという問題か。stomach. In order to prevent this, the non-magnetic material should be made softer than the metal magnetic plate (i.e., the abrasion rate should be made faster), but the problem would be that the life of the head would be shortened.

ある。　　　　　　　　　　　　　　　　　　　　５〔
発明の目的〕 本発明の目的は、上記従来技術の欠点を除き、。be. 5 [
OBJECT OF THE INVENTION The object of the present invention is to eliminate the drawbacks of the above-mentioned prior art.

コンタ−効果の発生が少なくかつ偏摩耗がなく。Less contour effect and no uneven wear.

高寿命の磁気ヘッド及びその製造方法を提供す。A long-life magnetic head and a method for manufacturing the same are provided.

ることにある。　　　　　　　　　　　　　　　１０〔
発明の概要〕 上記目的を達成するために本発明の磁気へν゛ドは、高
飽和磁未缶度の金属磁性膜で磁気囲路・が構成され、チ
ー１走行面における断面形状が゛ｒ字状に突出している
突起部を有する２個の基１５板の少くとも両１＃１ｌｌ
ｔｈｌに金Ｘ磁性属が被着され、・該突起部先端の金属
磁性膜がトラック幅に対応・する平坦部を有し、非磁性
ギャップ材を介して・突き合せて作動ギャップを構成し
ており、基板・の該突起部光漏に切り欠は部を設け、該
切り火２・１．４　。There are many things. 10 [
Summary of the Invention In order to achieve the above object, the magnetic head of the present invention has a magnetic enclosure made of a metal magnetic film with a high degree of saturation magnetism, and a cross-sectional shape on the running surface of the head 1. At least both 1#1ll of two base plates having protrusions projecting in a letter shape
thl is coated with gold X magnetic metal, and the metal magnetic film at the tip of the protrusion has a flat part corresponding to the track width, and is butted against each other through a non-magnetic gap material to form an operating gap. In addition, a notch is provided in the protrusion of the substrate for light leakage, and the cutout is 2.1.4.

け部に基板材と磁性膜の中間の摩耗速度をもつ“非磁性
材を充填し、非磁性材と基板との境界線゛がギヤｙ７と
非平行の構造とした。A non-magnetic material having an abrasion rate between that of the substrate material and the magnetic film is filled in the upper part, and the boundary line between the non-magnetic material and the substrate is non-parallel to the gear y7.

このような構造によれば、少くとも作動ギヤ゛ツブと平
行する疑似ギャップがなくコンタ−効５果の発生を無く
すことができ、また作動ギャッ。According to such a structure, there is at least no pseudo gap parallel to the operating gear knob, and the occurrence of contour effect 5 can be eliminated, and the operating gap can be eliminated.

グ近傍の磁性膜は基板材とそれの中間の摩粍速。The magnetic film near the substrate has a wear rate that is between that of the substrate material.

度をもつ非出性材上に形成されているため、テ。Because it is formed on a non-extractable material with a certain degree of

−１走行による偏摩耗が生じにくい構造となっ・ている
。さらにこの構造により作動ギヤツブ近！０傍のみの摩
耗性を容易に側御できるため高耐摩・磁性を有する基板
を用いることができ高寿命の・磁気ヘッドが得られる。-1 The structure is such that uneven wear due to running is less likely to occur. Furthermore, this structure allows the operating gear to be close! Since the abrasion only near zero can be easily controlled, a substrate with high wear resistance and magnetism can be used, and a magnetic head with a long life can be obtained.

〔発明の実施例） 以下１本発明の一央ｍ例を第３図により説明１５する。[Embodiments of the invention] A central example of the present invention will be explained below with reference to FIG.

第６図は本発明による磁気ヘッドのｆＩ＋視。FIG. 6 is an fI+ view of the magnetic head according to the present invention.

図、第４図は作動ギャップ部の拡大図である。。FIG. 4 is an enlarged view of the operating gap portion. .

同図においてｓｏ　、　ｓｏ’はｒ字状の突起部を設け
。In the same figure, so and so' have R-shaped protrusions.

たコア１＆２Ｆりであり、フェライトもしくは非。Cores 1&2F are ferrite or non-ferrite.

磁性フェライト、セラｉνり等で構、１１ｇ、されてぃ
２１゜る。５１　、３１’は基板材と異る摩耗性を有す
る非“磁性メタル、ガラス、セラミック等を充填した゛
切り欠は部である。この非磁性材と基板材との。It is composed of magnetic ferrite, ceramic, etc., and has a weight of 11g and a length of 21°. 51 and 31' are cutouts filled with a non-magnetic metal, glass, ceramic, etc. that has abrasion properties different from that of the substrate material.The non-magnetic material and the substrate material are separated.

境界線は作動ギャップと平行にならないよ５に・する。Set the boundary line to 5 so that it is not parallel to the working gap.

５２　、５２’はヘッドコアを形成する金属磁５性膜か
らなり、パーマロイ合金（Ｆｇ　−Ｎｉ合合金上センダ
スト合金　Ｆｇ　−Ａｌ−Ｓｉ合金）もしくは・非晶質
合金等の軟磁性材をスパッタリング、真゛空蒸庸等の方
法で薄膜化したものを用いる。３３゜はコアプｃ２ツク
を接層するだめの充填ガラスで１０あり、金属磁性膜へ
の影響を少くするために作・業温度が低くできる低融点
鉛系ガラスを用いるｄｊ４は作動ギャップでトラック幅
に対応する平坦・部を有するＶ字状の金属磁性膜が所要
のギャツ・１長が得られるように非磁性膜を挾んでコア
１１５０ツクを美き合せている。６５は巻線用窓である
。52 and 52' are made of metal magnetic films that form the head core, and are made by sputtering a soft magnetic material such as permalloy alloy (Fg-Ni alloy on sendust alloy, Fg-Al-Si alloy) or amorphous alloy. ``A thin film made by a method such as air evaporation is used. 33° is the filling glass used to contact the corep C2, which is 10°, and the dj4, which uses low melting point lead-based glass that can be operated at low temperatures to reduce the effect on the metal magnetic film, is the working gap and the track width. A V-shaped metal magnetic film having a flat portion corresponding to the core 1150 is held in place by sandwiching a non-magnetic film so as to obtain the required width and length. 65 is a winding window.

以下本発明の磁気ヘッドの製造方法を詳細に。The method for manufacturing the magnetic head of the present invention will be explained in detail below.

説明する。explain.

本発明の前記磁気ヘッドの製造方法の各工程。Each step of the method for manufacturing the magnetic head of the present invention.

のｉＩ！明図四回５図（イ）〜（チ）に示す。第６図の
、５゜（イ）はＫｎ　−Ｚｎ単結晶フェライト基板４０
のギヤ。iI! Shown in Figures 4 and 5 (A) to (H). In Fig. 6, 5° (A) is a Kn-Zn single crystal ferrite substrate 40.
gear.

ツブ突き合せ面となる面に深さが５０〜８０牌で。The depth of the surface that will be the butting surface is 50 to 80 tiles.

Ｖ溝４１の開き角度が１２０〜１４０度の第１０ｒ溝。A 10r groove in which the opening angle of the V groove 41 is 120 to 140 degrees.

加工を行う工程である。（ｏ）はｒ溝加工を行つ゛たギ
ャップ突き合せ面に蒸着法もしくはイオン５ル−ティン
グ法を用いてたとえば７オルステ゛う’ｆ　）　（２Ｍ
１０　＠Ｓｉｎり等４２を厚さ５０／ｊ７Ａ被着す・る
工程である。（ハ）はＣＱ）で被着したンオルス゛テラ
イト膜４２を基板表面まで研削、研摩を行い゛除去する
工程である。（ニ）の工程は（ハ）の工程ＩＯで得られ
た基板のギャップ突き合せ面となる面・に深さが１２０
μｍの第２０Ｖ＃＃４５の加工を行う工・程である。こ
のときＶ溝４６の頂点部が第１０ｒ・溝４１の斜面部に
位置するよ５にする。ｒ溝の開・ぎ角度は６０度とした
。またこの工程で基板に巻１５線用の溝４４の加工を行
い、その深さは第２０ｒ。This is a processing process. In (o), for example, 7 orthoste is applied using vapor deposition method or ion 5-routing method on the gap abutting surface where R groove has been processed.
10 This is the step of depositing @Sin 42 to a thickness of 50/j7A. (c) is a step in which the orthotelite film 42 deposited with CQ) is removed by grinding and polishing to the surface of the substrate. In step (d), the depth is 120 mm on the surface that will be the gap butting surface of the substrate obtained in step IO in (c).
This is a process for processing the 20th V##45 of μm. At this time, the apex portion of the V-groove 46 is positioned at the slope portion of the 10th r groove 41. The opening angle of the r groove was 60 degrees. Also, in this step, a groove 44 for the winding 15 wire is formed on the substrate, and its depth is 20r.

′溝ｓ７よりも深くする。（ホ）の工程で前記ｒ溝加。' Make the groove deeper than the groove s7. In the step (e), the r groove is formed.

工を行ったギャップ突き合せ面にスパッタリン。Sputtering on the gap butt surface that has been machined.

グ法を用いてたとえばセンダスト合金膜４Ｂ　（Ｆｅ　
。For example, sendust alloy film 4B (Fe
.

−５番−Ａｔ合合金金２０〜４０μｍの厚さ被着させ２
、。- No. 5 - At alloy coated with a thickness of 20 to 40 μm 2
,.

る。このときたとえば５ｉｎＲ膜等の非磁性膜を層。Ru. At this time, a non-magnetic film such as a 5inR film is layered.

間材として１層５〜１０μｍの厚さの膜を多層化し゛て
もよい。（へ）の工程でセンダスト合金膜の上“に少く
とも残りの溝が埋まる程度にたとえば軟“化点が６５０
℃のＰｂＯ−Ｂ、　０．系低融点ガラス４６を５５５０
℃の温度を１０分間保持し充填する。〔ト〕の。As an interlayer, multiple layers of films each having a thickness of 5 to 10 μm may be used. In step (f), the softening point is set to 650, for example, to the extent that at least the remaining grooves are filled on top of the sendust alloy film.
PbO-B at °C, 0. 5550 low melting point glass 46
℃ temperature for 10 minutes and filling. [g] of.

工程でギャップ突き合せ面上のガラス４６．セン゛ダス
ト合金膜４５を機械研摩等により除去しセン゛ダスト合
金膜を７Ｍ要のトラック幅Ｔまで露出さ。Glass 46 on the gap butting surface in the process. The sensor dust alloy film 45 is removed by mechanical polishing or the like to expose the sensor dust alloy film to a track width T of 7M.

せる。またこの工程で巻線窓内のガラスを機械■０研削
で除去する。次に第５図のＣト）に一点鎖線。let Also, in this process, the glass inside the winding window is removed by machine ■0 grinding. Next, add a dashed line to C in Figure 5.

Ａで示すよう処切断し一対のコアツｏｙり４７．４８を
得る。（チ）の工程で（ト）で得られたコア１゜ｃ２ν
り４７　、４１３のギャップ突き合せ面にＳｔＯ，、−
ガラス等の非磁性膜を所要の厚さく約０．２５μｍ）＋
５にスパッタリング法により形成し、該コアグロ・νり
の互いのセンダスト合金膜を合せて突き合・せ、加圧し
ながら５５０　℃に加熱しｒ溝内の低融・点ガラスを浴
融し、ボンディンググ０νり４９を・得る。このボンナ
インググロックをトラック部−ｊ・・　８　・ Ｔを中心に一点鎖線ＢおよびＢ′で順次切断する”こと
によっ【第６図に示す磁気ヘッドを得る。゛アジマス角
度を設ける場合にはボンディングブ。Cut as shown in A to obtain a pair of core pieces 47.48. Core 1゜c2ν obtained in (g) in step (h)
StO, - on the gap butting surfaces of 47 and 413
Add a non-magnetic film such as glass to the required thickness of approximately 0.25 μm) +
5 by the sputtering method, the core-groove and ν-shaped sendust alloy films are aligned and butted together, and heated to 550 °C under pressure to bath-melt the low-melting/point glass in the r-groove and bonding. Get 0vri49. The magnetic head shown in Fig. 6 is obtained by sequentially cutting this Bonning Glock along dashed lines B and B' centering on the track portion -j...8.T. is bonding.

ロックを所要の角度傾けて切断する。Cut the lock at the required angle.

本実施例では金属磁性膜としてセンダスト合金膜を用い
たが、　Ｆｔｒ　−Ｓｉ合金、　ｌｋ　−Ｎｔ金合金（
パーマロイ合金）並びＣｏ　−ＮＡ−Ｚｒ系等各種。In this example, a Sendust alloy film was used as the metal magnetic film, but Ftr-Si alloy, lk-Nt gold alloy (
permalloy alloy) and Co-NA-Zr series.

組成の非晶質合金など高飽和磁束密度、高透磁。Composition of amorphous alloys such as high saturation magnetic flux density, high permeability.

率を有し、磁歪が０付近の軟磁性材であれば何。What if it is a soft magnetic material with a magnetostriction of around 0?

でもよい。また基板材としてＭルーＺｒＬ単結晶フ【リ
エライトを用いたが、他にＮｉ　−Ｚｎンエライト等の
フェライト磁性材でもよく、さらにＭ晶化ガラス、アル
ｉナ（Ｊ’５（ｊａ）等の非磁性基板を用いた場”合で
も本発明は有効である。実施机で“は非磁性膜としてン
オルステライトを用いたが！−他にソーダガラス等のカ
ラスを用いてもよいが。But that's fine. Although M-ZrL single-crystal ferrite was used as the substrate material, other ferrite magnetic materials such as Ni-Zn ferrite may also be used. The present invention is effective even when a magnetic substrate is used.Although in the experiment, orsterite was used as the non-magnetic film, glass such as soda glass may also be used.

そのときのガラスの軟化点は少くともポンディ・ンググ
ロックを得る工程で溶融しないようにす。At that time, the softening point of the glass should be set so that it does not melt at least during the process of obtaining Pondi Ngulock.

る。またこの非磁性材のチー１走行における軍・粍速度
は少（とも基板材のそれよりも速く磁性？膜よりも遅け
ればよい。充填ガラスとしては　ｐＡＯＢ＊Ｏｓ系ガラ
スを用いたが、他にｐｂｏ　−ｓ番Ｏ門系、　ｐｂｏ　
−ｐ！ｏ、糸等の軟化点が５００℃以下のガラスであれ
ばよい。Ru. In addition, the magnetic velocity of this non-magnetic material in Q1 travel is low (it only needs to be faster than that of the substrate material and slower than that of the magnetic film. pAOB*Os glass was used as the filling glass, but there are other pbo - sth O phylum system, pbo
-p! o. Glass having a softening point of 500° C. or lower may be used.

１ｉ４６図は第２図に示した従来の磁気ヘッドと本発明
によるｍ気ヘッドのテープ走行における゛偏摩耗による
出力劣化を示したものであり、従゛米の磁気ヘッドは１
０時時間桁で約−６ｄＢの出力゛劣化を生じているが本
発明の磁気ヘッドは２００　’時間走行においても出力
劣化は−ｊｄＢ以内であり―・不発明が有効であること
がわかる。Figure 1i46 shows the output deterioration due to uneven wear during tape running between the conventional magnetic head shown in Figure 2 and the magnetic head according to the present invention.
Although the output deterioration was about -6 dB at the 0 o'clock time digit, the output deterioration of the magnetic head of the present invention was within -j dB even after running for 200 hours, which shows that the invention is effective.

〔発明の効果〕〔Effect of the invention〕

本発明によれは、０ンター効来及び偏摩耗に“よる特性
劣化が少い高寿命の磁気ヘッドを得ることができる。　
　　　　　　　　　　　　　　Ｉ−According to the present invention, it is possible to obtain a long-life magnetic head with less characteristic deterioration due to zero-turn effect and uneven wear.
I-

【図面の簡単な説明】[Brief explanation of drawings]

第１図、第２図は従来の磁気ヘッドの斜視図◆第６図は
本発明による磁気ヘッドのＩ／＋視図、第・４図は本発
明による磁気ヘッドの作動ギ、十シブ・部の拡大図、第
５図は不発ＢＡＫよる磁気ヘッドクの製造方法を示す工
程図、第６図はテープ走行。 によるヘッド出力の変化を示す図である。　　５０．５
０’・・・基板　　　　５１．５１’・・・非磁性材　
　５２．５２’・・・金！１４Ｍ１性膜　３６　　・・
・充填方う２　６４　　・・・作動ギャップ　３５　　
・・・巻祿用窓　　　４１　　・・・第１のｒ字状ｆｐ
Ｉ４３　　・・・＃＆２のｒ字状溝。 ４７．４８・・・コアブロック 代理Ｎ−±小川膀用２゜ １　）　回 鬼２１ ３３　回 基 篤　４２ 遣　！５　口 ξ４） 塞　ぢ　図 （＝） （オ・） ４．５ 一ζ１− 〔８戸］ｑ生パパ・υ1 and 2 are perspective views of a conventional magnetic head ◆ Figure 6 is an I/+ view of a magnetic head according to the present invention, and Figures 4 are operating gears and parts of a magnetic head according to the present invention. 5 is a process diagram showing a method of manufacturing a magnetic head using unexploded BAK, and FIG. 6 is a tape running diagram. FIG. 3 is a diagram illustrating changes in head output due to 50.5
0'...Substrate 51.51'...Nonmagnetic material
52.52'...Gold! 14M1 membrane 36...
・Filling method 2 64 ...Operating gap 35
...window for winding 41 ...first r-shaped fp
I43...#&2 r-shaped groove. 47.48...Core block substitute N-± Ogawa Uyo 2゜1) Kaiki 21 33rd Mototsu 42 Sent! 5 Mouth ξ4) Block ぢ Figure (=) (O・) 4.5 1ζ1− [8 houses] q Raw Papa・υ

Claims (1)

【特許請求の範囲】 １、先端部の切り欠け部に非磁性材を充填したＶ字状に
突出している突起部を有する磁性基板の該突起部の少く
とも両側面に金属磁性膜を被着し、該金属磁性膜の先端
がトラック幅に対応する平坦部を有した１対のヘッドコ
アを非磁性膜を介して互いの平坦部を突き合せ該非磁性
膜を作動ギャップとし、該切り欠け部と磁性基板の境界
線が作動ギャップと非平行であることを特徴とする磁気
ヘッド。 ２、前記基板が非磁性基板であ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３、前記金属磁性膜
が高透磁率非晶質合金からなることを特徴とする特許請
求の範囲第１項または第２項に記載の磁気ヘッド。 ４、ｉ）基板のギャップ形成側の面に第１のＶ字状の２
本の溝を１組とする溝を平行に複数 設ける工程、 ｉｉ）前記溝内に第１の非磁性材を充填する工程、 ｉｉｉ）ギャップ形成面となる面の前記非磁性材の不要
部分を除去する工程、 ｉｖ）基板のギャップ形成側の面に少くとも第１のＶ字
状溝より深いコイル巻線用の窓と なる溝を形成する工程、 ｖ）基板のギャップ形成側の面に、前記巻線溝とほぼ直
交するように中央部に突起を挾 持するように隣接し、該突起が第１のＶ字 状溝の少くとも斜面部に位置し、少くとも コイル巻線溝より浅く、第１のＶ字状溝よ り深い２本の溝を１組とするＶ字状溝を平 行に複数設ける工程、 ｖｉ）前記基板のギャップ形成側の面に金属磁性膜を被
着せしめる工程。 ｖｉｉ）前記金属磁性膜が表面に被着させている前記溝
に第２の非磁性材を充填する工程、 ｖｉｉｉ）前記第２の非磁性材および金属磁性膜の不要
部分を除去し、金属磁性膜に所定のト ラック幅を有するギャップ形成面を露呈せ しめる工程、 ｉｘ）基板を１対の磁気ヘッドコアブロックとなるよう
に切断する工程、 ｘ）前配置対のコアブロックの少くとも一方のギャップ
形成側の面に所要の厚さの非磁 性層を形成する工程、 ｘｉ）前記１対のコアブロックのギャップ形成面を相対
峙せしめ、互いに接合する工程、 ｘｉｉ）コアブロックを所定の位置にて切断し、複数個
の磁気ヘッドを得る工程を有するこ とを特徴とする磁気ヘッドの製造方法。[Claims] 1. A magnetic substrate having a V-shaped protrusion whose notch at the tip is filled with a non-magnetic material, with a metal magnetic film coated on at least both sides of the protrusion. A pair of head cores each having a flat portion at the tip of the metal magnetic film corresponding to the track width are butted against each other with their flat portions interposed through a non-magnetic film, and the non-magnetic film is used as an operating gap. A magnetic head characterized in that the boundary line of the magnetic substrate is non-parallel to the working gap. 2. The magnetic head 3 according to claim 1, wherein the substrate is a non-magnetic substrate. The magnetic head 3 according to claim 1, wherein the metal magnetic film is made of an amorphous alloy with high magnetic permeability. A magnetic head according to range 1 or 2. 4, i) First V-shaped 2 on the gap forming side surface of the substrate.
a step of providing a plurality of parallel grooves each having a set of book grooves, ii) a step of filling the grooves with a first non-magnetic material, and iii) removing an unnecessary portion of the non-magnetic material on the surface that will become the gap forming surface. iv) forming a groove to serve as a window for the coil winding that is deeper than the first V-shaped groove on the surface of the substrate on the gap formation side; v) on the surface of the substrate on the gap formation side. A protrusion is adjacent to the coil winding groove so as to sandwich it in the center so as to be substantially perpendicular to the coil winding groove, and the protrusion is located at least on an inclined surface of the first V-shaped groove and is at least shallower than the coil winding groove; a step of providing a plurality of parallel V-shaped grooves each consisting of two grooves deeper than the first V-shaped groove; vi) a step of depositing a metal magnetic film on the gap forming side surface of the substrate. vii) filling the grooves on which the metal magnetic film is adhered with a second non-magnetic material; viii) removing unnecessary portions of the second non-magnetic material and the metal magnetic film to form a metal magnetic film; a step of exposing a gap forming surface having a predetermined track width on the film; ix) a step of cutting the substrate into a pair of magnetic head core blocks; x) forming a gap in at least one of the core blocks of the previous pair forming a nonmagnetic layer with a desired thickness on the side surfaces; xi) aligning the gap-forming surfaces of the pair of core blocks to face each other and joining them to each other; xii) cutting the core blocks at predetermined positions; A method of manufacturing a magnetic head, comprising the step of obtaining a plurality of magnetic heads.