JPH0480443B2 - - Google Patents
Info
- Publication number
- JPH0480443B2 JPH0480443B2 JP19530884A JP19530884A JPH0480443B2 JP H0480443 B2 JPH0480443 B2 JP H0480443B2 JP 19530884 A JP19530884 A JP 19530884A JP 19530884 A JP19530884 A JP 19530884A JP H0480443 B2 JPH0480443 B2 JP H0480443B2
- Authority
- JP
- Japan
- Prior art keywords
- main
- magnetic pole
- magnetic
- pole
- return path
- 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.)
- Expired
Links
- 239000000696 magnetic material Substances 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000702 sendust Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910020674 Co—B Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910020641 Co Zr Inorganic materials 0.000 description 1
- 229910020520 Co—Zr Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、磁気記録媒体の面内方向に対して垂
直に情報を記録する垂直磁気記録再生方式に用い
られる垂直磁気記録再生ヘツド（以下、垂直磁気
ヘツドと称す）に関するものである。
(ロ) 従来の技術
従来、斯る垂直磁気記録再生方式に用いられる
垂直磁気ヘツドとしては、補助磁極磁型のものと
主磁極励磁型のものとがあり、特に磁気記録媒体
に対して片側配置となる（即ち、補助磁極を必要
としない）主磁極励磁型のものが応用面で優れて
いることから将来有望視されている。そして、斯
る主磁極励磁型の垂直磁気ヘツドとして例えば第
９図に示す如く主磁極１をデポジツト形成された
磁性薄膜で構成し、その主磁極１を両側から挟持
する一対の補助部材２，２′、主磁極１に磁気的
に接合され巻線３が施される補助磁極部４ａ，
４′ａと主磁極１の磁束のリターンパスとなるリ
ターンパス部４ｂ，４′ｂとを分割する溝部４ｃ，
４′ｃが形成されたバルク状磁性材４，４′と、該
パルク状磁性材のリターンパス部４ｂ，４b′と主
磁極１とを磁気的に分離するスペーサ部として溝
部４ｃ，４′ｃ上部に介在される非磁性材５，
５′とを接合して構成したものがある。
(ハ) 発明が解決しようとする問題点
ところが、上記垂直磁気ヘツドではその主磁極
がパーマロイやアモルフアス等の金属系磁性薄膜
で構成され、補助磁極部やリターンパス部がフエ
ライト等酸化物系のバルク状磁性材で、スペーサ
部がセラミツク等の非磁性材で夫々構成されてい
るため、即ち金属材料、酸化物材料等多種多様な
材料で構成されているため、その加工工程が複雑
になると共に、記録媒体との摺接によりヘツドの
媒体対接面側に片べり、即ち各材料間の摩耗差が
生じベツドの寿命が短かくなると謂う問題があつ
た。
(ニ) 問題点を解決するための手段
本発明は上記の問題点を解決するために、主磁
極をデポジツト形成される金属系磁性薄膜にて構
成し、その主磁極を両側から挟持する一対の補助
部材を、主磁極と磁気的に接合される金属系磁性
材よりなる補助磁極部と、記録媒体側に直接臨ん
で主磁極の磁束のリターンパスとなる金属系磁性
材よりなるリターンパス部と、このリターンパス
部と共に媒体対接面を形成するよう主磁極とリタ
ーンパス部との間に介在され主磁極と同等か或い
はそれよりも耐摩耗性の低い金属系非磁性材より
なるスペーサ部とで構成したものである。
(ホ) 作用
本発明は上記のようにヘツドの媒体対接面側、
特に主磁極近傍のスペーサ部をこの主磁極と同等
か或いはそれよりも耐摩耗性の低い金属系非磁性
材にて構成したので、記録媒体との摺接時に主磁
極の陥没現象を生じることがない。
(ハ) 実施例
以下、本発明の一実施例について図面と共に説
明する。
即ち、本発明の垂直磁気ヘツドは第１図に示す
如く構成されており、６はCo−Zr−Nb系アモル
フアス薄膜よりなる主磁極、７，７′は主磁極６
をその両側から挟持する一対の補助部材で、該各
補助部材で、該各補助部材７，７′はリターンパ
ス部８ａ，８′ａ及び巻線用の溝部８ｂ，８′ｂが
形成されたセンダスト合金等のバルク状磁性材
８，８′とCo−Ｂ系アモルフアス薄帯９，９′と
で構成されており、該Co−Ｂ系アモルフアス薄
帯９，９′の先端部分はリターンパス部８ａ，
８′ａと主磁極６とが直接磁気的に接合されない
よう結晶化して磁気特性を消失せしめたスペーサ
部９ａ，９′ａ（Ｌ＝30μｍ）になつており、そし
て残りの部分は主磁極６と磁気的に接合されて巻
線１０（巻線径は20μｍφ）が施される補助磁極
部９ｂ，９b′になつている。
次に、本発明垂直磁気ヘツドの製造方法につい
て第２図乃至第７図を参照にしながら説明する。
先ず、第２図に示すように厚さ200μｍのCo−
Ｂ系アモルフアス薄帯１１の一部即ち先端から
500μｍの部分をレーザスポツト照射が高温（500
℃以上）に加熱してこのレーザ照射部分をスペー
サ部１１ａ，１１′ａ（後述するアモルフアス薄膜
と略同等の耐摩耗性を有する）として結晶化し磁
気特性を消失せしめた第１のアモルフアス薄帯１
２を得る。そして、この第１のアモルフアス薄帯
１２の一側面側に所要のトラツク幅（例えば、
130μｍ）のスリツトを有するメタルマスクを用
いて高周波スパツタ法（例えば、Arガス×
10-3Torrで20分前後）で約0.5μｍ膜厚のCo−Zr
系（例えば、Co−Zr−Nb、Co−Zr−Ta等）ア
モルフアス薄膜１３を形成して第２のアモルフア
ス薄帯１４を得る（第３図参照）。尚、マスキン
グ法にて所要のトラツク幅のアモルフアス薄膜を
得るようにしたが、フオトエツチング法等によつ
ても形成することが出来る。
次に、センダスト（Fe−Al−Si）等のバルク
状の磁性材ブロツク１５の一側面１５ａ側に巻線
用の溝部１６（T1＝400μｍ、T2＝200μｍ）を形
成した後、鏡面研摩する（第４図参照）。そして、
この様にして得られた第４図に示す如き形状のブ
ロツク１５の一側面１５ａ側に前記した第２のア
モルフアス薄帯１４を接合して（低融点ガラス或
いは有機樹脂を用いて加圧真空含浸法により接着
層を0.1μｍ程度に薄くする）、第５図に示す如き
第１の半割ブロツク１７を得る。同様に、第６図
に示す如き磁性材ブロツク１５の一側面１５ａ側
に前記した第１のアモルフアス薄帯１２を接合し
て第２の半割ブロツク１８を得る。そして、この
様にして得られた第２の半割ブロツク１８と第１
の半割ブロツク１７とを夫々アモルフアス薄帯１
１，１１側から突き合わせて接合し、第７図に示
す如き本体ブロツク１９を得る。その後、斯る本
体ブロツク１９を第７図に鎖線にて示す個所から
所要のヘツド幅に相当する間隔で切断した後、媒
体対接面側の切削、研磨、Ｒ付け加工を行ない巻
線を施せば第１図に示す様な本発明垂直磁気ヘツ
ドが得られる。
尚、第８図は本発明ヘツドと従来ヘツドとの再
生出力の変化を時間と共に示す特性図で、(H)は本
発明ヘツドを(H)′は従来ヘツドの再生出力を示し
ており、初期では殆んどその再生出力は同一であ
つたが、24時間後ではその再生出力は本発明の方
が数段優れており、48時間後では従来ヘツドの再
生出力が極めて小さくなるのに対し、本発明ヘツ
ドは初期の再生出力をそのまま維持することが出
来る。これは、記録媒体とヘツドとの摺接によ
り、従来ヘツドでは摩耗により主磁極の陥没現象
を生じ、主磁極と記録媒体とのスペーシングが増
大したのに対し、本発明ヘツドでは主磁極周辺の
媒体対接面が同種の金属材料で構成されて摩耗差
が殆どないためである。
(ト) 発明の効果
上述した如く本発明の垂直磁気ヘツドは、主磁
極や、その主磁極を両側から挟持する一対の補助
部材等を全て金属材料で構成しているので、従来
の如く多種多様な材料で構成されていた場合に比
してその加工工程を簡素化することが出来る。ま
た、その主磁極周辺の媒体対接面側が主磁極と同
等か或いはそれよりも耐摩耗性の低い金属系、非
磁性材で構成されているので、主磁極の陥没現象
を生じることなく長期に渡つて安定したヘツド出
力を得ることが出来る。 [Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a perpendicular magnetic recording/reproducing head (hereinafter referred to as , perpendicular magnetic head). (b) Prior Art Conventionally, there are two types of perpendicular magnetic heads used in such perpendicular magnetic recording and reproducing systems: auxiliary magnetic pole magnetic type and main magnetic pole excitation type. The main magnetic pole excitation type (that is, it does not require an auxiliary magnetic pole) is considered promising in the future because it is superior in terms of application. As shown in FIG. 9, for example, as shown in FIG. 9, such a main pole excitation type perpendicular magnetic head has a main pole 1 composed of a deposited magnetic thin film, and a pair of auxiliary members 2 , 2 that sandwich the main pole 1 from both sides. ' , an auxiliary magnetic pole part 4a that is magnetically joined to the main magnetic pole 1 and to which the winding 3 is applied;
4′a and a return path portion 4b, which serves as a return path for the magnetic flux of the main magnetic pole 1; a groove portion 4c that divides 4′b;
Groove portions 4c, 4'c serve as spacer portions for magnetically separating the bulk magnetic materials 4, 4' in which the bulk magnetic materials 4'c are formed, the return path portions 4b, 4b' of the bulk magnetic materials, and the main magnetic pole 1. non-magnetic material 5 interposed in the upper part;
5' are joined together. (c) Problems to be Solved by the Invention However, in the above-mentioned perpendicular magnetic head, the main magnetic pole is made of a metal-based magnetic thin film such as permalloy or amorphous, and the auxiliary magnetic pole part and the return path part are made of bulk oxide-based material such as ferrite. Since the spacer part is made of a non-magnetic material such as ceramic, the processing process becomes complicated, and the spacer part is made of a variety of materials such as metal materials and oxide materials. There has been a problem in that sliding contact with the recording medium causes one-sided slipping of the head on the side facing the medium, that is, a difference in wear between the various materials, which shortens the life of the bed. (d) Means for Solving the Problems In order to solve the above problems, the present invention consists of a main magnetic pole made of a deposit-formed metallic magnetic thin film, and a pair of magnetic poles sandwiching the main magnetic pole from both sides. The auxiliary member includes an auxiliary magnetic pole section made of a metallic magnetic material that is magnetically bonded to the main magnetic pole, and a return path section made of a metallic magnetic material that directly faces the recording medium side and serves as a return path for the magnetic flux of the main magnetic pole. , a spacer part made of a metallic non-magnetic material having wear resistance equal to or lower than that of the main pole and interposed between the main pole and the return pass part so as to form a medium contacting surface together with the return pass part; It is composed of (E) Effect As described above, the present invention is directed to the media facing side of the head,
In particular, since the spacer part near the main magnetic pole is made of a metallic non-magnetic material that has wear resistance equal to or lower than that of the main magnetic pole, there is no possibility that the main magnetic pole will collapse when it comes into sliding contact with the recording medium. do not have. (C) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. That is , the perpendicular magnetic head of the present invention is constructed as shown in FIG.
A pair of auxiliary members sandwiching the auxiliary members from both sides, and each of the auxiliary members 7 and 7' is formed with return path portions 8a and 8'a and groove portions 8b and 8'b for winding. It is composed of a bulk magnetic material 8, 8' such as sendust alloy and a Co-B amorphous thin ribbon 9, 9', and the tip of the Co-B amorphous ribbon 9, 9' is a return path section. 8a,
The spacer portions 9a, 9'a (L=30 μm) are crystallized and lose their magnetic properties so that the main magnetic pole 6 is not directly magnetically connected to the main magnetic pole 6. The auxiliary magnetic pole portions 9b and 9b' are magnetically connected to each other and are provided with a winding 10 (winding diameter: 20 μmφ). Next, a method of manufacturing the perpendicular magnetic head of the present invention will be explained with reference to FIGS. 2 to 7. First, as shown in Figure 2, a 200 μm thick Co-
Part of the B-based amorphous amorphous ribbon 11, that is, from the tip
The laser spot irradiates the 500μm area at high temperature (500μm).
℃ or above) to crystallize the laser irradiated portions as spacer portions 11a, 11'a (having approximately the same abrasion resistance as the amorphous thin film described later), thereby eliminating magnetic properties .
Get 2. Then, a required track width (for example,
High frequency sputtering method (for example, Ar gas ×
Co-Zr with a thickness of approximately 0.5 μm at 10 -3 Torr for about 20 minutes)
An amorphous amorphous thin film 13 (for example, Co-Zr-Nb, Co-Zr-Ta, etc.) is formed to obtain a second amorphous ribbon 14 (see FIG. 3). Although the amorphous thin film having the required track width was obtained by the masking method, it can also be formed by a photoetching method or the like. Next, after forming a winding groove 16 (T 1 =400 μm, T 2 =200 μm) on one side 15a of the bulk magnetic material block 15 such as sendust (Fe-Al-Si), mirror polishing is performed. (See Figure 4). and,
The second amorphous ribbon 14 described above is bonded to one side 15a of the thus obtained block 15 having the shape shown in FIG. The adhesive layer is made thin to about 0.1 .mu.m by a method) to obtain a first half block 17 as shown in FIG. Similarly, the first amorphous ribbon 12 described above is joined to one side 15a of the magnetic material block 15 as shown in FIG. 6 to obtain the second half block 18. Then, the second half block 18 obtained in this way and the first
The halved block 17 and the amorphous ribbon 1 are respectively
They are butted and joined from the 1 and 11 sides to obtain a main body block 19 as shown in FIG. After that, the main body block 19 is cut at intervals corresponding to the required head width from the point indicated by the chain line in FIG. A perpendicular magnetic head of the present invention as shown in FIG. 1 can be obtained. FIG. 8 is a characteristic diagram showing the change in reproduction output of the head of the present invention and the conventional head over time. The playback output was almost the same, but after 24 hours the playback output of the present invention was much better, and after 48 hours the playback output of the conventional head was extremely small. The head of the present invention can maintain the initial reproduction output as it is. This is because the sliding contact between the recording medium and the head causes the main magnetic pole to collapse due to wear in the conventional head, increasing the spacing between the main magnetic pole and the recording medium. This is because the media contacting surfaces are made of the same type of metal material and there is almost no difference in wear. (G) Effects of the Invention As mentioned above, the perpendicular magnetic head of the present invention has a main magnetic pole, a pair of auxiliary members that sandwich the main magnetic pole from both sides, etc., all made of metal materials, so it can be used in a variety of different ways as in the past. The processing process can be simplified compared to the case where the material is made of a similar material. In addition, the media contacting surface around the main pole is made of a metal or non-magnetic material with wear resistance equal to or lower than that of the main pole, so it can be used for a long time without causing the main pole to sink. It is possible to obtain stable head output over time.
第１図は本発明垂直磁気ヘツドを示す平面図、
第２図乃至第７図は夫々その製造工程を示し、第
２図はその第１のアモルフアス薄帯を示す斜視
図、第３図はその第２のアモルフアス薄帯を示す
斜視図、第４図は溝加工が施された磁性材ブロツ
クを示す斜視図、第５図は第１の半割ブロツクを
示す斜視図、第６図は第２の半割ブロツクを示す
斜視図、第７図は本体ブロツクを示す斜視図、第
８図は本発明ヘツドと従来ヘツドの再生出力特性
を示す図、第９は従来ヘツドを示す平面図であ
る。
６……主磁極、７，７′……補助部材、９，
９′……アモルフアス薄膜、９ａ，９′ａ……スペ
ーサ部。
FIG. 1 is a plan view showing the perpendicular magnetic head of the present invention;
2 to 7 show the manufacturing process, respectively. FIG. 2 is a perspective view of the first amorphous amorphous ribbon, FIG. 3 is a perspective view of the second amorphous ribbon, and FIG. 4 5 is a perspective view showing the first half block, FIG. 6 is a perspective view showing the second half block, and FIG. 7 is the main body. FIG. 8 is a perspective view showing the block, FIG. 8 is a diagram showing reproduction output characteristics of the head of the present invention and a conventional head, and FIG. 9 is a plan view showing the conventional head. 6...Main magnetic pole, 7 , 7' ...Auxiliary member, 9,
9'...Amorphous thin film, 9a, 9'a...Spacer portion.
Claims (1)
膜にて構成し、その主磁極を両側から挟持する一
対の補助部材を、主磁極と磁気的に接合される金
属系磁性材よりなる補助磁極部と、記録媒体側に
直接臨んで主磁極の磁束のリターンパスとなる金
属系磁性材よりなるリターンパス部と、このリタ
ーンパス部と共に媒体対接面を形成するよう主磁
極とリターンパス部との間に介在され主磁極と同
等か或いはそれよりも耐摩耗性の低い金属系非磁
性材よりなるスペーサ部とで構成した事を特徴と
する垂直磁気記録再生ヘツド。 ２ 前記主磁極はアモルフアス薄膜で構成され、
前記補助部材はそのリターンパス部がバルク状の
センダスト合金で構成され、補助磁極部がアモル
フアス薄帯で構成され、スペース部がそのアモル
フアス薄帯の一部を結晶化して構成されているこ
とを特徴とした特許請求の範囲第１項記載の垂直
磁気記録再生ヘツド。[Claims] 1. The main magnetic pole is made of a deposit-formed metallic magnetic thin film, and a pair of auxiliary members that sandwich the main magnetic pole from both sides are made of a metallic magnetic material that is magnetically joined to the main magnetic pole. an auxiliary magnetic pole part made of a metal magnetic material, a return path part made of a metallic magnetic material that directly faces the recording medium side and serves as a return path for the magnetic flux of the main pole, and a main magnetic pole part that forms a medium contact surface together with the return path part. A perpendicular magnetic recording/reproducing head comprising a spacer part made of a metallic non-magnetic material having wear resistance equal to or lower than that of the main magnetic pole and interposed between the return path part and the main pole part. 2. The main magnetic pole is composed of an amorphous thin film,
The auxiliary member is characterized in that its return path portion is made of bulk Sendust alloy, the auxiliary magnetic pole portion is made of an amorphous amorphous ribbon, and the space portion is made by crystallizing a part of the amorphous amorphous ribbon. A perpendicular magnetic recording/reproducing head according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19530884A JPS6173213A (en) | 1984-09-18 | 1984-09-18 | Vertical magnetic recording and playback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19530884A JPS6173213A (en) | 1984-09-18 | 1984-09-18 | Vertical magnetic recording and playback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6173213A JPS6173213A (en) | 1986-04-15 |
| JPH0480443B2 true JPH0480443B2 (en) | 1992-12-18 |
Family
ID=16338994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19530884A Granted JPS6173213A (en) | 1984-09-18 | 1984-09-18 | Vertical magnetic recording and playback |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6173213A (en) |
-
1984
- 1984-09-18 JP JP19530884A patent/JPS6173213A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6173213A (en) | 1986-04-15 |
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