JPS5868211A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS5868211A
JPS5868211A JP16508081A JP16508081A JPS5868211A JP S5868211 A JPS5868211 A JP S5868211A JP 16508081 A JP16508081 A JP 16508081A JP 16508081 A JP16508081 A JP 16508081A JP S5868211 A JPS5868211 A JP S5868211A
Authority
JP
Japan
Prior art keywords
magnetic
film
thin film
magnetic head
insulator
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
Application number
JP16508081A
Other languages
Japanese (ja)
Inventor
Kunio Hata
畑　邦夫
Yoshio Takahashi
良夫 高橋
Masahiro Miyazaki
宮崎　正裕
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16508081A priority Critical patent/JPS5868211A/en
Publication of JPS5868211A publication Critical patent/JPS5868211A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure

Landscapes

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

Abstract

PURPOSE:To reduce a write current and to improve ability in reading, by laminating two kind of film, i.e. a magnetic film which has high saturated magnetism characteristics important during writing and a magnetic film which has high magnetic permeability characteristics important during reading, and thus constituting a magnetic pole. CONSTITUTION:On a substrate 1, the 1st kind of magnetic film 2 is arranged and on it, the 2nd kind of magnetic film 3 is arranged; and part 4 of a coil used for writing and reproducing while having a gap part 6 is arranged in an insulator 5 and on it, the upper and lower magnetic layers are connected mutually at a back yoke part 7. The upper magnetic layer consists of the 2nd kind of magnetic film 3 and the 1st kind of magnetic layer 2 which are stacked. As the 1st and 2nd kind of magnetic films, either of magnetic films having high saturated magnetism characteristics and high magnetic permeability characteristics is employed. The film having the high saturated magnetism characteristics uses a Co-Zr amorphous film, and the film having the high magnetic permeability film uses a Co-Fe-B amorphous film.

Description

【発明の詳細な説明】 本発明は薄膜磁気ヘッドに係り、特に磁性薄膜を主に書
込み時の性能向上させた膜と読取り時の性能向上させた
膜とで構成した薄膜磁気ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thin film magnetic head, and more particularly to a thin film magnetic head comprising a magnetic thin film mainly consisting of a film with improved writing performance and a film with improved reading performance.

従来の薄膜磁気ヘッドは、磁極部分を一種類の磁性膜で
構成していたので、その磁性膜に要求される性能は。In conventional thin-film magnetic heads, the magnetic pole portion is made of one type of magnetic film, so what performance is required of that magnetic film?

書込み時に重要な高飽和磁化特性と、読取り時に重要な
高透磁率特性の両方でめった。It was successful in both high saturation magnetization properties, which are important for writing, and high magnetic permeability properties, which are important for reading.

本発明は、この二つの特性が特に勝れている二種類の磁
性膜金積鳩して磁極を構成し、書込電流が小さく高保磁
力媒体に使用でき、読取り性能の良い薄膜磁気ヘッドを
提供するにある。The present invention provides a thin-film magnetic head that has two types of magnetic films that are especially excellent in these two characteristics to form a magnetic pole, has a small write current, can be used for high coercive force media, and has good read performance. There is something to do.

本発明は、誓込み時には高飽和磁化特性膜を利用して大
きな書込みｆｆｉ楊ｔ−実現し、読取り時には高透磁率
膜を利用して有効利用のできる磁束を増してその薄膜磁
気へラドの再生出力を大きくする様にしたものである。The present invention utilizes a film with high saturation magnetization property during writing to realize large write ffi, and during reading, uses a high magnetic permeability film to increase the magnetic flux that can be effectively used and regenerate the thin film magnetic field. This is designed to increase the output.

例えは、高飽和磁化特性膜としてＣｏｘＩＺｒｌ−ＸＩ
　（Ｘ１＝０．８３〜０．９５　）のアモルファスＭ！
Ｘ（飽和磁化Ｂｓ　　１．４ＫＧ）を使用し、高透磁率
膜として（ＣＯｌ−ｘ２Ｆｅｘｚ）７６Ｂｚ４（ｘ２＝
０．ｌＯ〜０．１２）のアモルファス！（透磁率μ　４
０００）を使用する。For example, CoxIZrl-XI is used as a film with high saturation magnetization property.
(X1=0.83~0.95) amorphous M!
X (saturation magnetization Bs 1.4KG) is used as a high permeability film (COl-x2Fexz)76Bz4 (x2=
0. lO~0.12) amorphous! (Magnetic permeability μ 4
000) is used.

図に本発明の薄膜磁気ヘッドの断面図を示す。薄膜磁気
ヘッドは基板１上に、下部磁性層として一釉類目の磁性
ｍ２が配置され、その上に、二種類口の磁性機・３を配
置し、ギャップ部６を持ち、書込み再生に使用するコイ
ルの一部４を絶縁物５の中に配置し、その上にバックヨ
ーク部７で上下の磁性層を接続した構造において、上部
磁性層を、先ず第二種類目の磁性膜３１次に第一種類目
の磁性層２を積ねた構成とする。この第一種、二種の磁
性膜としてはそれぞれは前記の高飽和磁化特性をもつ磁
性膜と高透磁率特性をもつ磁性機のどちらかを適用する
。The figure shows a sectional view of the thin film magnetic head of the present invention. The thin film magnetic head has a first glaze type magnetic m2 arranged as a lower magnetic layer on a substrate 1, and a two-type magnetic machine 3 is arranged on top of the substrate 1, and has a gap part 6, and is used for writing and reproducing. In a structure in which a part 4 of a coil to be used is placed in an insulator 5, and upper and lower magnetic layers are connected thereon by a back yoke part 7, the upper magnetic layer is first coated with a second type of magnetic film 31, The first type of magnetic layer 2 is stacked. As the first and second types of magnetic films, either the above-mentioned magnetic film with high saturation magnetization characteristics or magnetic machine with high magnetic permeability characteristics is applied.

この様な構成とすると、書込時には高飽和磁化特性膜が
利用でき、読取り時には高透磁率特性膜が利用できる。With such a configuration, a film with high saturation magnetization characteristics can be used during writing, and a film with high magnetic permeability characteristics can be used during reading.

基板ｌとしては結晶化ガラス、アルミナチタンカーバイ
ド、水晶９通常のアルミナガラス等の絶縁物、又は絶縁
物を被着させた金属材等を用いることができる。As the substrate 1, an insulating material such as crystallized glass, alumina titanium carbide, crystal 9 or ordinary alumina glass, or a metal material coated with an insulating material can be used.

なお９図において２．と３．の磁性膜の間に非磁性層を
介在させても上記と同等の効果があり、さらに２．と３
．の磁性膜の間での磁気的カップリングを切って各々の
特性を独立に発揮させる効果がある。In Figure 9, 2. and 3. Even if a non-magnetic layer is interposed between the magnetic films of 2., the same effect as above can be obtained. and 3
．． This has the effect of cutting off the magnetic coupling between the magnetic films and allowing each to exhibit its characteristics independently.

また９図の２．と３．のそれぞれの磁性機を、非磁性層
を介在させた多層膜構造にすれは、上記と同等の効果が
あり、さらに、透磁率の高周波特性を改善させる効果が
ある。Also, 2 in Figure 9. and 3. If each of the magnetic machines is formed into a multilayer film structure with a non-magnetic layer interposed therebetween, the same effect as above can be obtained, and there is also an effect of improving the high frequency characteristics of magnetic permeability.

本１発明によれば、高飽和磁化膜と高透磁率膜の両方を
利用できるので、各々の特性の大きい材料を採用できる
ので書込磁場を大きく、′ｆた書込電流が小さく、再生
出力を大きくできる効果がある。According to the first invention, since both a high saturation magnetization film and a high magnetic permeability film can be used, materials with great characteristics can be used, so the write magnetic field can be increased, the write current can be small, and the reproduction output can be increased. It has the effect of increasing the

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

図は本発明の薄膜磁気ヘッドを説明する図である。 １：基板　、２：第１の磁性膜　、３：第２の磁性膜。 ４：コイル、５：絶縁物　、６：ギャップ部　。 ７：バツクヨーク部、８：薄膜磁気ヘッドの媒体対向面
。The figure is a diagram illustrating a thin film magnetic head of the present invention. 1: Substrate, 2: First magnetic film, 3: Second magnetic film. 4: Coil, 5: Insulator, 6: Gap part. 7: back yoke portion, 8: medium facing surface of thin film magnetic head.

Claims (4)

【特許請求の範囲】[Claims] （１）絶縁物、又は絶縁物を被着させた金属の基板上に
形成した薄膜磁気ヘッドにおいて、磁性薄膜からなる磁
極部分を高透磁率磁性薄膜と高飽和磁化をもつ磁性薄膜
の積層薄膜で構成したことを特徴とする薄膜磁気ヘッド
。(1) In a thin-film magnetic head formed on an insulator or a metal substrate coated with an insulator, the magnetic pole part made of a magnetic thin film is a laminated thin film of a high permeability magnetic thin film and a magnetic thin film with high saturation magnetization. A thin film magnetic head characterized by the following structure. （２）上記二種類の磁性膜の間に絶縁物等の非磁性層を
介在させた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) The thin film magnetic head according to claim 1, characterized in that a nonmagnetic layer such as an insulator is interposed between the two types of magnetic films. （３）上記高透磁率磁性薄膜と高飽和磁化磁性薄膜を各
々多層膜構造にした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。(3) The thin film magnetic head according to claim 1, wherein the high permeability magnetic thin film and the high saturation magnetization magnetic thin film each have a multilayer structure. （４）上記高飽和磁化磁性薄膜がＣｏ−Ｚｎ系アモルフ
ァス膜であり、高透磁率磁性薄膜がＣｏ−Ｆｅ−Ｂ系７
モルアス膜であ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。(4) The high saturation magnetization magnetic thin film is a Co-Zn based amorphous film, and the high permeability magnetic thin film is a Co-Fe-B based 7
Claim 1, characterized in that it is a molarous film.
The thin film magnetic head described in Section 1.
JP16508081A 1981-10-16 1981-10-16 Thin film magnetic head Pending JPS5868211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16508081A JPS5868211A (en) 1981-10-16 1981-10-16 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16508081A JPS5868211A (en) 1981-10-16 1981-10-16 Thin film magnetic head

Publications (1)

Publication Number Publication Date
JPS5868211A true JPS5868211A (en) 1983-04-23

Family

ID=15805486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16508081A Pending JPS5868211A (en) 1981-10-16 1981-10-16 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS5868211A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055601A (en) * 1983-09-07 1985-03-30 Seiko Epson Corp Soft magnetic thin film
JPS62204418A (en) * 1986-03-04 1987-09-09 Nec Corp Thin-film magnetic head
JPH0215406A (en) * 1988-07-01 1990-01-19 Nec Corp Thin film magnetic head
JPH04232606A (en) * 1990-12-28 1992-08-20 Alps Electric Co Ltd Thin film magnetic head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724015A (en) * 1980-07-17 1982-02-08 Mitsubishi Electric Corp Thin film magnetic head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724015A (en) * 1980-07-17 1982-02-08 Mitsubishi Electric Corp Thin film magnetic head

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055601A (en) * 1983-09-07 1985-03-30 Seiko Epson Corp Soft magnetic thin film
JPS62204418A (en) * 1986-03-04 1987-09-09 Nec Corp Thin-film magnetic head
JPH0215406A (en) * 1988-07-01 1990-01-19 Nec Corp Thin film magnetic head
JPH04232606A (en) * 1990-12-28 1992-08-20 Alps Electric Co Ltd Thin film magnetic head

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