JPS58179927A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS58179927A
JPS58179927A JP6272882A JP6272882A JPS58179927A JP S58179927 A JPS58179927 A JP S58179927A JP 6272882 A JP6272882 A JP 6272882A JP 6272882 A JP6272882 A JP 6272882A JP S58179927 A JPS58179927 A JP S58179927A
Authority
JP
Japan
Prior art keywords
thin film
magnetic
head
recording medium
magnetically
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.)
Granted
Application number
JP6272882A
Other languages
Japanese (ja)
Other versions
JPS6327772B2 (en
Inventor
Kenji Kanai
金井 謙二
Kiyoshi Sasaki
清志 佐々木
Takeshi Takahashi
健 高橋
Ryuji Sugita
龍二 杉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6272882A priority Critical patent/JPS58179927A/en
Priority to EP83302024A priority patent/EP0091812B1/en
Priority to US06/483,614 priority patent/US4613918A/en
Priority to DE8383302024T priority patent/DE3374622D1/en
Publication of JPS58179927A publication Critical patent/JPS58179927A/en
Publication of JPS6327772B2 publication Critical patent/JPS6327772B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3916Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide
    • G11B5/3919Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/399Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures with intrinsic biasing, e.g. provided by equipotential strips

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To eliminate an element width loss of a thin film magnetic head, by connecting magnetically a permeable matter having contact with a recording medium to an end of the width direction of a magneto-resistance effect element of a ferromagnetic matter and at the same time by connecting magnetically a permeable thin film having contact with the recording medium to the other end of the magneto-resistance effect element with electrical insulation. CONSTITUTION:A cut groove 2 is formed on the surface of an insulated magnetic substrate 1 like ferrite, etc., and a nonmagnetic material 3 is filled into the groove 2. Then an Ni-Fe alloy, for instance, is coated on a new surface finished with the same level as the surface of the substrate 1. Electrodes 5 and 6 are provided at both ends in the lengthwise direction of a magneto-resistance effect element 4, and the element 4 is set in parallel to the lengthwise direction of the groove 2. The upper end part of the element 4 is connected magnetically to the upper end part 10 of the groove 2; while the lower end part of the element 4 is insulated electrically and connected magnetically to the upper end part of a permeable thin film 7 having approximately equal thickness. The signal magnetization recorded on a vertical recording medium 8 is led to the lower part of the element 4 and then to the part 10. Then the signal magnetization passes through the substrate 1 to be led to a contact surface 11 with the medium 8 and then returns to the medium 8. In such a way, the width loss of the element 4 can be eliminated.

Description

【発明の詳細な説明】 本発明は磁気媒体中に記録された信号を効率よく内生す
る薄膜磁気ヘッドを得ること、特に、磁気記録媒体走行
方向に垂直な方向の残留磁化が走行方向即ち長手方向の
残留磁化より大きい垂直記録された磁化信号を高密度に
読み出す薄膜磁気ヘッドを実現することを目的とする。
DETAILED DESCRIPTION OF THE INVENTION The present invention aims to obtain a thin film magnetic head that efficiently internalizes signals recorded in a magnetic medium, and in particular, to reduce the residual magnetization in the direction perpendicular to the running direction of the magnetic recording medium in the running direction, that is, the longitudinal direction. The present invention aims to realize a thin film magnetic head that can read out perpendicularly recorded magnetization signals with high density, which are larger than the residual magnetization in the direction.

垂直磁気記録は従来の長手方向磁気i己録より本質的に
高密度記録に適していることが知られている。しかし、
再生過程においてはまたいろいろ問題があった。?Ii
えば、電磁誘導による巻線形磁気ヘッドで再生する場合
には、単磁極形ヘッドやリング形ヘッドが提栗されてい
る。リング形ヘッドで再生する場合、垂直記録の特徴で
ある短波長信号を再生するためには、ギャップ長を極端
に小さくする必要があり、磁気ヘッドの磁気回路能率が
非常に悪くなる。再生感度を上げるために巻線数を増や
していくと、ヘッドインダクタンスの増大による自己共
振周波数が低下する。一方、記録波長の短波長化に伴い
信号周波数が高くなるため。
It is known that perpendicular magnetic recording is inherently more suitable for high-density recording than conventional longitudinal magnetic recording. but,
There were also various problems during the regeneration process. ? Ii
For example, when reproducing with a wound magnetic head using electromagnetic induction, a single magnetic pole type head or a ring type head is proposed. In the case of reproduction using a ring-shaped head, the gap length must be made extremely small in order to reproduce the short wavelength signal, which is a characteristic of perpendicular recording, and the efficiency of the magnetic circuit of the magnetic head becomes extremely poor. When the number of windings is increased in order to increase reproduction sensitivity, the self-resonant frequency decreases due to an increase in head inductance. On the other hand, as the recording wavelength becomes shorter, the signal frequency becomes higher.

磁気ヘッドの自己共振周波数の低下は信号再生において
、極めて不都合であった。また、単磁極形ヘッドにおい
ても、巻線形であるため、同様の問題をもっている。電
磁誘導形ヘッドで共通したさらに大きな問題は、ヘッド
と1記録媒体間の相対速度が小さい場合、再生出力電圧
が小8くなV、その対策としては巻線数の増大となり、
上記問題を太きくする。一方、磁気ヘッドを多数並設す
るマルチトラック構成においては5巻線スペースが問題
となる。8らに、薄膜技術で構成する場合には。
A decrease in the self-resonant frequency of the magnetic head is extremely inconvenient in signal reproduction. In addition, a single magnetic pole type head also has a similar problem because it is a wound type head. An even bigger problem common to electromagnetic induction heads is that when the relative speed between the head and one recording medium is small, the reproduction output voltage is small, about 8 V. The solution to this problem is to increase the number of windings.
Expand the above problem. On the other hand, in a multi-track configuration in which a large number of magnetic heads are arranged in parallel, the space for five windings becomes a problem. 8. When constructed using thin film technology.

巻線数が限られ、高感度な再生ヘッドを実現できない。The number of windings is limited, making it impossible to create a highly sensitive playback head.

これらの問題を解決するために、最近、磁気抵抗効果(
以下MRと略記する)ヘッドが注目されている。従来の
MRヘッドは、例えば、短冊状MR素子の長手方向に電
流を流し、記録媒体にMR素子を垂直に配置し、信号磁
界が素子面内に、長手方向と直角に入る素子単体形MR
ヘッドがある。
In order to solve these problems, recently the magnetoresistive effect (
(hereinafter abbreviated as MR) heads are attracting attention. A conventional MR head is, for example, a single-element MR head in which a current is passed in the longitudinal direction of a strip-shaped MR element, the MR element is arranged perpendicularly to the recording medium, and a signal magnetic field enters the element plane at right angles to the longitudinal direction.
There is a head.

このタイプのMRヘッドでは、ヘッド構造のみに起因す
る波長応答特性はMR素子幅Wによって決定されること
が知られている。この波長損失を充分小さくするために
はWを波長λ程度にする必要かあV、これは短波長指向
のヘッドにとっては極めて不利である。一方、MR素子
の厚さ方向の両11411に116透磁率の磁性体を配
置したンールド形MRヘッドがある。このタイプのMR
ヘッドは従来のリング形巻線ヘッドと略同じ波長応答を
示し、がなりの短波長まで高感度に使用できることが知
られている。しかし、MR素子と両側の高透磁率磁性体
との間には磁気的、電気的な絶縁を施す必要があ凱この
間の絶縁層厚’JI T (J2が従来のリング形巻線
ヘッドのギャップ長に相当する。さらに、近似的にはり
、のギャップ損失と92のギャップ損失の積の形になる
ため、短波長におけるギャップ損失を充分小石くするた
めにはs ql 、q2共極端に小さくする必要があハ
この状況下で、磁気的。
It is known that in this type of MR head, the wavelength response characteristic caused only by the head structure is determined by the MR element width W. In order to sufficiently reduce this wavelength loss, it is necessary to make W about the wavelength λ, which is extremely disadvantageous for a head oriented to short wavelengths. On the other hand, there is a rolled-type MR head in which a magnetic material with a magnetic permeability of 116 is placed on both sides 11411 of the MR element in the thickness direction. This type of MR
It is known that the head exhibits approximately the same wavelength response as a conventional ring-shaped wire-wound head, and can be used with high sensitivity up to extremely short wavelengths. However, it is necessary to provide magnetic and electrical insulation between the MR element and the high permeability magnetic materials on both sides. Furthermore, since it approximately takes the form of the product of the gap loss of the beam and the gap loss of 92, in order to make the gap loss at short wavelengths sufficiently small, both s ql and q2 should be extremely small. Under this situation, you need magnetic.

電気的にリークのない狭ギャップ長を形成することは極
めて困難である。
It is extremely difficult to form a narrow gap length without electrical leakage.

さらに、垂直記録媒体がGo−Orのような良導電性材
料より構成されている場合にはMR素子と記録媒体間の
電気的リークも考慮する必要があった。
Furthermore, if the perpendicular recording medium is made of a highly conductive material such as Go-Or, it is necessary to consider electrical leakage between the MR element and the recording medium.

以−ヒのような従来の問題点を解決する本発明Q   
  ′基本構成は′市磁変換?侍性に関Ij、する磁気
ギャップを有ぜず、MRR子幅に起因する@損失を#消
し。
This invention Q solves the conventional problems such as
``Basic configuration is ``City Magnetic Conversion?'' Regarding samurai characteristics, it has no magnetic gap and eliminates loss caused by MRR width.

導電性記録媒体と組合せた場合においても安定な動作を
する薄膜磁気ヘッドである。
This is a thin film magnetic head that operates stably even when combined with a conductive recording medium.

すなわち、本発明は、MR素子の両端に電極を有するN
ニーFe 、 N1−Goなとの強磁性体よりなるMR
素子の幅方向の一端に、記録媒体と接する透磁性体の一
端を磁気的に結合し、そのMR素子の幅方向の他端に、
記録媒体と接する透磁性薄膜全磁気的に結合し、MR素
子とその透磁性薄膜とを電気的に絶縁する構成である。
That is, the present invention provides an N
MR made of ferromagnetic materials such as Ni-Fe and N1-Go.
One end of a magnetically permeable material in contact with the recording medium is magnetically coupled to one end of the MR element in the width direction, and the other end of the MR element in the width direction is
The structure is such that the magnetically permeable thin film in contact with the recording medium is fully magnetically coupled, and the MR element and the magnetically permeable thin film are electrically insulated.

以下具体的に本発明の詳細な説明する〇 第1図および第2図(2Ll 、 (blは本発明の一
実施例を示す。
The present invention will be specifically explained in detail below. 〇 Figures 1 and 2 (2Ll and (bl) show one embodiment of the present invention.

図に示すように、フェライトのような絶縁性磁性基板1
0表面に切欠き溝2を設け、その切欠き部に非磁性材3
を充填し基板1の表面と同一面に仕上げられた新たな表
面上に例えば、Ni −Fe合金全蒸着手段で500人
程鹿の厚さに被着し、写真食刻技術で電極5.6iMR
素子4の長手方向の両端に配置6シ%MR素子4を切欠
き溝2の長さ方向とV−行に設ける。MRR子4の上端
部を磁性基板中に設けられた切欠き箭2の上端部10と
磁気的に結合し、MRR子4の下端部は略同−厚烙の透
磁性薄膜7の上端部と電気的に絶縁され磁気的に結合さ
れている。その接合部12での一具体例としてはSiO
,SiO2の如き薄い絶縁層13を介して1幅の狭い高
透磁性薄膜14をMRR子4に平行に配置した構成が第
2図(2L)に示すものである。MRR子4と略直角な
而11は記録媒体8と当接する而であり、矢印9は媒体
の移動方向である。
As shown in the figure, an insulating magnetic substrate 1 such as ferrite
A notch groove 2 is provided on the 0 surface, and a non-magnetic material 3 is placed in the notch.
For example, a Ni-Fe alloy is deposited to a thickness of about 500 mm on a new surface that has been filled with and finished flush with the surface of the substrate 1, and an electrode of 5.6 iMR is formed using photolithographic technology.
6% MR elements 4 are arranged at both longitudinal ends of the elements 4 in the longitudinal direction of the notch groove 2 and in the V- row. The upper end of the MRR element 4 is magnetically coupled to the upper end 10 of the notch 2 provided in the magnetic substrate, and the lower end of the MRR element 4 is connected to the upper end of the magnetically permeable thin film 7 of approximately the same thickness. Electrically isolated and magnetically coupled. One specific example of the joint 12 is SiO
2 (2L) shows a structure in which a narrow high magnetic permeability thin film 14 is placed parallel to the MRR element 4 with a thin insulating layer 13 such as SiO2 interposed therebetween. Point 11, which is substantially perpendicular to MRR element 4, is in contact with recording medium 8, and arrow 9 is the direction of movement of the medium.

接合部12の他の具体例を、第2図(b)に示す。Another specific example of the joint portion 12 is shown in FIG. 2(b).

記録媒体8と当接する透磁性薄膜7を切欠き溝2と平行
に配置し、その上に絶縁層15を被着後、MR累壬子4
なる磁性薄膜を被着形成し、両者間の磁気的接合部16
を構成する。この場合、MRR子4と透磁性薄膜7の形
成順序は逆でもよい。
After arranging the magnetically permeable thin film 7 in contact with the recording medium 8 parallel to the notch groove 2 and depositing the insulating layer 15 thereon, the MR layer 4
A magnetic thin film is deposited to form a magnetic junction 16 between the two.
Configure. In this case, the order of forming the MRR element 4 and the magnetically permeable thin film 7 may be reversed.

また、基板材料に関しては、MRR子4からの信号磁束
全媒体891Qに効率よく導く構造であれば、必ずしも
磁性材基板である必要はなく、本発明の基本動作をする
ような構成、例えば、非磁性材料の表向に磁性薄膜を被
着したものでもよい。
Regarding the substrate material, it does not necessarily have to be a magnetic material substrate as long as it has a structure that efficiently guides the entire signal magnetic flux from the MRR element 4 to the medium 891Q. It may also be one in which a magnetic thin film is adhered to the surface of a magnetic material.

MR素子4はバイアス磁界HB を印加して1信号磁界
に対して線形動作を行わせることが多い。
The MR element 4 is often caused to perform linear operation with respect to one signal magnetic field by applying a bias magnetic field HB.

その−具体例を第3図(2L) 、 (b)に示す。同
x (IL)はMR素子4に導電体層17を並設し、そ
れにMR素子4の長手方向に電流を流すことにより、バ
イアス磁界′ff:J−jえるものである。導電体層1
70MR素子と反対側に高透磁性材18を並設するこ吉
により、バイアス効率を高めることができる。また。
Specific examples thereof are shown in FIGS. 3(2L) and (b). The bias magnetic field 'ff:J-j is obtained by arranging a conductor layer 17 in parallel with the MR element 4 and passing a current through it in the longitudinal direction of the MR element 4. Conductor layer 1
By arranging the high magnetic permeability material 18 in parallel on the side opposite to the 70MR element, the bias efficiency can be increased. Also.

第3図(blは媒体8に関してヘッドと反対側に補助@
I1.19をヘッドと対向させ、この透磁性材よジなる
補助極19に巻線を設は電流を流して磁化するか、永久
磁石で磁化して、MR素子4にバイアス磁界全印加する
構成を示している。
Figure 3 (bl is an auxiliary @ on the opposite side of the head with respect to the medium 8)
I1.19 is placed opposite to the head, and a winding is installed on the auxiliary pole 19 made of a magnetically permeable material, which is magnetized by passing a current or magnetized by a permanent magnet, and the entire bias magnetic field is applied to the MR element 4. It shows.

以」二のような構成にすることにより、垂直記録媒体8
に記録された信号磁化は、本発明による薄膜磁気ヘッド
により、その透磁性薄膜7の下端部に導かれ、その」;
端部からMR素子4のド端部に導かれ、その−4二端部
から基板1中の切欠き溝2の端部9に導かれ、基板を通
り、媒体8との当接面11に導かれ、媒体8に戻る。こ
の結果、従来問題となっていた単体形MRヘッドにおけ
る素子幅損失がなくなる。そして透磁性薄膜7の厚さを
MR素子4と同程度の厚さにすることにより、従来のシ
ールド形MRヘッドにおいて問題となっていたキャップ
損失のない自生ヘッドを実現できる。
By configuring the configuration as described below, the perpendicular recording medium 8
The signal magnetization recorded in is guided to the lower end of the magnetically permeable thin film 7 by the thin film magnetic head according to the present invention,
It is guided from the end to the do end of the MR element 4, and from its -4 end to the end 9 of the notch groove 2 in the substrate 1, passes through the substrate, and reaches the contact surface 11 with the medium 8. guided back to medium 8. As a result, element width loss in a single MR head, which has been a problem in the past, is eliminated. By making the thickness of the magnetically permeable thin film 7 approximately the same as that of the MR element 4, a self-generating head without cap loss, which has been a problem in conventional shielded MR heads, can be realized.

8らに、導電性、i己録媒体と組合せた場合でも電気的
リークの問題のないン専膜磁気ヘッドを実現できる効果
がある。
8. Furthermore, there is an effect that a single-film magnetic head without the problem of electrical leakage can be realized even when combined with a conductive, self-recording medium.

[旭本発明による磁気ヘッドと従来の磁気ヘッドとの波
長応答特性全比較すると第4図に示すようになる。横軸
にV長λの逆数、即ち、周彼数に対応したものをとv1
縦軸に相対出力をと!11゜素子単体形MRヘッドは曲
線(イ)で、シールド形MRヘッドは(ロ)で、本発明
のMRヘッドはejでそれぞれ示す。但し、ヘッド媒体
間のスペース損失はとのヘッド+も共通のため算入され
ていない。
[Asahi] A complete comparison of the wavelength response characteristics of the magnetic head according to the present invention and a conventional magnetic head is shown in FIG. 4. The horizontal axis shows the reciprocal of the V length λ, that is, the one corresponding to the periodic number, and v1
Relative output on the vertical axis! The 11° single-element type MR head is shown by curve (a), the shield type MR head by curve (b), and the MR head of the present invention by curve (ej). However, the space loss between the head media is not included because the head + is also common.

なお第2図(a)の構造においては、R膜素子加工時に
MR素子4への磁気的障害を最少にできる効果もイイし
ている。
The structure shown in FIG. 2(a) also has the advantage of minimizing magnetic interference to the MR element 4 during processing of the R film element.

また2本発明による磁気ヘッドは、媒体裏面に品透磁率
層を41つ2層媒体、または、補助極と並用することに
より、さらに、再生時の電磁変換効率を高められる効果
を有している。
In addition, the magnetic head according to the present invention has the effect of further increasing the electromagnetic conversion efficiency during reproduction by using a two-layer medium or an auxiliary pole with a magnetic permeability layer on the back surface of the medium. .

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

第1図は本発明の一実施例である薄膜磁気ヘッドの斜視
図、第2図(alは第1図の線A A’に沿った断面図
、第2図(blは上記磁気ヘッドの要部の変形例を示す
断面図、第3図(11、(blは本発明による薄膜磁気
ヘッド全構成するMR累子へノ(イアス磁界を印加する
構成を示す断面図、第4図は本発明による薄膜磁気ヘッ
ドと従来の磁気ヘッドとの波長応答特性を比較して示す
図である。 1・・・・・・磁性基板、3・・・・・・非磁性材、4
・・・・・MR素子、7・・・・・・透磁性薄膜、8・
・・・・・記録媒体、17・・・・・・導電体層、19
・・・・・・補助極、5.6・・・・・・電極0代理人
の氏名 井理士 中 尾 敏 男 ほか1名III図 第2図
FIG. 1 is a perspective view of a thin film magnetic head according to an embodiment of the present invention, FIG. 2 (al is a sectional view taken along the line AA' in FIG. FIG. 3 is a cross-sectional view showing a modification of the thin film magnetic head according to the present invention. 1 is a diagram showing a comparison of the wavelength response characteristics of a thin film magnetic head according to the present invention and a conventional magnetic head. 1...Magnetic substrate, 3...Nonmagnetic material, 4
...MR element, 7...Magnetic permeable thin film, 8.
... Recording medium, 17 ... Conductor layer, 19
...Auxiliary electrode, 5.6...Name of electrode 0 representative: R. I, Toshio Nakao, and 1 other person Figure III Figure 2

Claims (2)

【特許請求の範囲】[Claims] (1)両端に電極を有する強磁性体よりなる磁気抵抗効
果素子の幅方向一端に、記録媒体と接する透磁性体の一
端を磁気的に結合し、上記磁気抵抗効果素子の幅方向他
端に、上記記録媒体と接する透磁性薄膜を磁気的に結合
し、かつ上記磁気抵抗効果素子と上記透磁性薄膜とを電
気的に絶縁してなることを特徴とする薄膜磁気ヘッド。
(1) One end of a magnetically permeable material in contact with a recording medium is magnetically coupled to one end in the width direction of a magnetoresistive element made of a ferromagnetic material having electrodes at both ends, and the other end in the width direction of the magnetoresistive element is A thin film magnetic head, characterized in that a magnetically permeable thin film in contact with the recording medium is magnetically coupled, and the magnetoresistive element and the magnetically permeable thin film are electrically insulated.
(2)磁気抵抗効果素子と透磁性薄膜を略同−厚さとし
、非導電性材を介して透磁性体で磁気的に結合すること
を特徴とする特許請求の範囲第1項記載の薄膜磁気ヘッ
ド。
(2) Thin film magnetism according to claim 1, characterized in that the magnetoresistive element and the magnetically permeable thin film have approximately the same thickness and are magnetically coupled by a magnetically permeable material via a non-conductive material. head.
JP6272882A 1982-04-14 1982-04-14 Thin film magnetic head Granted JPS58179927A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6272882A JPS58179927A (en) 1982-04-14 1982-04-14 Thin film magnetic head
EP83302024A EP0091812B1 (en) 1982-04-14 1983-04-11 A playback head for perpendicular magnetic recordings
US06/483,614 US4613918A (en) 1982-04-14 1983-04-11 Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device
DE8383302024T DE3374622D1 (en) 1982-04-14 1983-04-11 A playback head for perpendicular magnetic recordings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6272882A JPS58179927A (en) 1982-04-14 1982-04-14 Thin film magnetic head

Publications (2)

Publication Number Publication Date
JPS58179927A true JPS58179927A (en) 1983-10-21
JPS6327772B2 JPS6327772B2 (en) 1988-06-06

Family

ID=13208710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6272882A Granted JPS58179927A (en) 1982-04-14 1982-04-14 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS58179927A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654739A (en) * 1984-01-05 1987-03-31 Matsushita Electric Industrial Co., Ltd. Thin film magnetic head for reproducing perpendicular magnetization
US4700252A (en) * 1983-10-20 1987-10-13 Matsushita Electric Industrial Co., Ltd. Magnetic thin film head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5263709A (en) * 1975-11-21 1977-05-26 Hitachi Ltd Film magnetic head of magnetic resistance effective type
JPS52113216A (en) * 1976-03-19 1977-09-22 Matsushita Electric Ind Co Ltd Magnetic head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5263709A (en) * 1975-11-21 1977-05-26 Hitachi Ltd Film magnetic head of magnetic resistance effective type
JPS52113216A (en) * 1976-03-19 1977-09-22 Matsushita Electric Ind Co Ltd Magnetic head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700252A (en) * 1983-10-20 1987-10-13 Matsushita Electric Industrial Co., Ltd. Magnetic thin film head
US4654739A (en) * 1984-01-05 1987-03-31 Matsushita Electric Industrial Co., Ltd. Thin film magnetic head for reproducing perpendicular magnetization

Also Published As

Publication number Publication date
JPS6327772B2 (en) 1988-06-06

Similar Documents

Publication Publication Date Title
JPS6087417A (en) Thin film magnetic head
JPS62192017A (en) Magnetic head
JPS58179927A (en) Thin film magnetic head
JPH05234170A (en) Magnetic head
JP2878738B2 (en) Recording / reproducing thin film magnetic head
JPS5971118A (en) Vertical magnetizing reproducing head
JPS6327773B2 (en)
JPS60182008A (en) Thin film magnetic head
US5933298A (en) System comprising a magnetic head, measuring device and a current device
US4654739A (en) Thin film magnetic head for reproducing perpendicular magnetization
JPH0440773B2 (en)
JPS5971119A (en) Magneto-resistance effect head
JPS61182620A (en) Thin film magnetic head
JPH0441412B2 (en)
JPH0441411B2 (en)
JPS5971121A (en) Vertical magnetization reproducing head
JPS58222422A (en) Filmy magnetic head
JPS607608A (en) Thin film magnetic head
JPS5971120A (en) Vertical magnetization reproducing method and its magneto-resistance effect head
JPH05189724A (en) Magnetic head
JPS61104401A (en) Thin film magnetic head recording system
JP2863552B2 (en) Thin-film magnetic head and recording / reproducing apparatus using this thin-film magnetic head
JPS5971122A (en) Thin film magnetic head
JPS6371914A (en) Reproducing head
JPS58125220A (en) Vertically magnetized recording and reproducing magnetic head