JPS6388808A - Single crystal ferrite - Google Patents
Single crystal ferriteInfo
- Publication number
- JPS6388808A JPS6388808A JP61233506A JP23350686A JPS6388808A JP S6388808 A JPS6388808 A JP S6388808A JP 61233506 A JP61233506 A JP 61233506A JP 23350686 A JP23350686 A JP 23350686A JP S6388808 A JPS6388808 A JP S6388808A
- Authority
- JP
- Japan
- Prior art keywords
- mol
- single crystal
- crystal ferrite
- ferrite
- mno
- 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
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 18
- 239000013078 crystal Substances 0.000 title claims abstract description 14
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims 2
- 239000011787 zinc oxide Substances 0.000 claims 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 229910001887 tin oxide Inorganic materials 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000001668 ameliorated effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ＶＴＲ４（ビデオテープレコーダ）等の記録
再生ヘッド素材に使用される単結晶フェライトに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a single crystal ferrite used for a recording/reproducing head material of a VTR4 (video tape recorder) or the like.
従来の技術
最近、単結晶フェライトは、ＶＴＲ等の分野で盛んに利
用されるようになってきた。従来、一般的に用いられて
いる単結晶フェライトは、Ｆｅｚ Ｏｓが５０ｍｏｔ％
〜５５ｍｏｌ％、ＺｎＯが１．４ ｍｏｌ 〜２０
ｍｏｌ−％、ＭｎＯが３６ ｍａｔ％〜２５ｍｏｔ％の
組成内で作られ、磁２ ・＼−７
気ヘッド用素材として用いられている。しかし近年、記
録密度を上げるために高抗磁力のテープ（メタルテープ
、蒸着テープ等）が使用されるようになり、上記で作ら
れた単結晶フェライトでは、飽和磁束密度が小さいため
、ヘッドとして十分な記録・再生を行うことができない
。そしてフェライト特有のノイズも問題であった。そこ
で、近時における単結晶フェライトにあっては、例えば
、センダスト、あるいはアモルファスを使用したメタル
素材をヘッドに用いることにより記録・再生効率を向上
させるようにしたものがある。以下上記従来のメタルヘ
ッドについて説明する。センダスト、アモルファスメタ
ルヘッドは飽和磁束密度が７０００ガウス以上あるため
、高抗磁力（１，０００工ルステツド以上）のテープに
十分対応できる。而してヘッド素材として用いた場合、
従来の単結晶フェライトを用いたヘッドよりも記録・再
生効率を向上させることができノイズも小さい。BACKGROUND OF THE INVENTION Recently, single crystal ferrite has been widely used in fields such as VTRs. Conventionally, commonly used single crystal ferrite contains 50 mot% Fez Os.
~55 mol%, ZnO is 1.4 mol ~20
It is made with a composition of 36 mol-% MnO to 25 mol-% MnO, and is used as a material for magnetic heads. However, in recent years, tapes with high coercive force (metal tape, vapor-deposited tape, etc.) have come to be used to increase recording density, and the single crystal ferrite made above has a low saturation magnetic flux density, so it is not sufficient for heads. Recording/playback cannot be performed. The noise peculiar to ferrite was also a problem. Therefore, some of the recent single-crystal ferrites have improved recording and reproducing efficiency by using metal materials such as sendust or amorphous in the head. The conventional metal head described above will be explained below. Sendust and amorphous metal heads have a saturation magnetic flux density of 7,000 gauss or more, so they can adequately handle tapes with high coercive force (1,000 gauss or more). Therefore, when used as a head material,
Recording/reproducing efficiency can be improved compared to conventional heads using single-crystal ferrite, and noise is also lower.
発明が解決しようとする問題点
しかし、以上のような従来のメタル素イ〕を用い３ へ
−２
だヘッドでは、製作工数が多く、しかも加工性が悪いた
め、歩留りも悪くなり、非常に高価なものとなる。Problems to be Solved by the Invention However, the production of a 3-2 head using the conventional metal element as described above requires a large number of man-hours and is poor in processability, resulting in poor yields and being extremely expensive. Become something.
本発明は、上記問題を解決するもので、加工性を向」ニ
させて歩留りを向上させることによシコストの低下を図
ることができ、更には、Ｏ／Ｎを従来のフェライトに比
べて２〜３デシベル向上させることができ高抗磁力テー
プにも十分対応できるようにした単結晶フェライトを提
供しようとするものである。The present invention solves the above-mentioned problems, and can reduce the cost by improving the processability and improving the yield.Furthermore, it is possible to reduce the O/N by 2 times compared to conventional ferrite. The object is to provide a single-crystal ferrite that can be improved by ~3 decibels and can be used in high coercive force tapes.
問題点を解決するだめの手段
そして上記問題点を解決するだめの本発明の技術的な手
段は、Ｍｎ−Ｚｎ系フェライトにおいてＦｅｚｅｓが６
１．５ｍｏｌ％〜６５ｍｏｌ％、Ｚｎ○が１０ ｍｏ７
〜２０ ｍａｔチ、ＭｎＯが２８．５ｍｏｔ％〜１５
ｍａｔ ％の組成内にＳｎＯ２を１ ｍｏｔ％〜３ ｍ
ｏｔ％を添加したものである。The means for solving the problems and the technical means of the present invention for solving the above problems are as follows:
1.5 mol% to 65 mol%, Zn○ is 10 mo7
~20 matchi, MnO is 28.5mot%~15
1 mot% to 3 m of SnO2 in the composition of mat %
ot% was added.
作用 上記技術的手段による作用は次のようになる。action The effects of the above technical means are as follows.
すなわち、高飽和磁束密度単結晶フェライトを使用する
ことにより高抗磁力テープへの記録が可能となる。また
単結晶フェライトにＳｎＯ２を添加することによりフェ
ライト特有のノイズを低減できる。That is, by using a single crystal ferrite having a high saturation magnetic flux density, it becomes possible to record on a high coercive force tape. Further, by adding SnO2 to single crystal ferrite, noise peculiar to ferrite can be reduced.
更にはヘッド素材をフェライト材料により形成している
ので加工性に優れ、歩留りを向」ニさせることができる
。Furthermore, since the head material is made of ferrite material, it has excellent workability and can improve yield.
実施例 以下、本発明の実施例について説明する。Example Examples of the present invention will be described below.
Ｆｅｔｕ３６１．５〜６５ｍｏｌ％、７１０１０〜２０
ｍ０ｔ係、ＭｎＯ２８，５〜１５ｍｏ７ ％の組成にＳ
ｎＯ２を１〜３ｍｏｔ％添加して単結晶フェライトを作
成した。その時の磁気特性である飽和磁束密度は６００
０〜６３００ガウスであった。又ＳｎＯ２を１ ｍｏｌ
係以下、Ｂ ｍｏｂ係以上にした場合は１ ｍｏ１％以
下では添加物の効果が殆んど見られず、３ ｍｏｔ％以
上にすると飽和磁束密度が急激に低下する。而してＳｎ
Ｏ２を１ ｍａｔ ％〜３ｍ０１係にすることにより、
飽和磁束密度の値も十分高抗磁力テープに対応でき、ヘ
ッドにした場合においても０７Ｎが従来に比べて２〜３
デシベル向」ニした。Fetu361.5-65 mol%, 71010-20
m0t ratio, MnO28,5 to 15 mo7% composition with S
A single crystal ferrite was created by adding 1 to 3 mot% of nO2. The saturation magnetic flux density, which is the magnetic property at that time, is 600
It was 0 to 6300 Gauss. Also, 1 mol of SnO2
When the B mob ratio is lower than the B mob ratio, the effect of the additive is hardly seen at 1 mol% or less, and when it is 3 mol% or higher, the saturation magnetic flux density decreases rapidly. Then Sn
By adjusting O2 to 1 mat % to 3 m01,
The saturation magnetic flux density value is also sufficient to support high coercive force tapes, and even when used as a head, 07N is 2 to 3
For decibels.
発明の効果 ５ ベージ 以上のように本発明によれば、Ｆｅ２ｅｓ、ＺｎＯ。Effect of the invention 5 Beige As described above, according to the present invention, Fe2es and ZnO.
ＭｎＯに５ｎｏ２１〜３ ｍｏｔ％入れることにより０
／Ｎが２〜３デシベル向上させることができ、更には、
従来のメタル素材に比べて加工性が良く、従って歩留り
を向上させることができ、耐摩耗性も格段に良く、安価
にヘッド素材として提供できる等の利点を有する。0 by adding 5no21~3 mot% to MnO
/N can be improved by 2 to 3 dB, and furthermore,
Compared to conventional metal materials, it has advantages such as better workability, thus improving yield, significantly better wear resistance, and being able to be provided as a head material at low cost.
Claims (1)
ｍｏｌ％、酸化亜鉛ＺｎＯが１０ｍｏｌ％〜２０ｍｏｌ
％、酸化マンガンＭｎＯが２８．５ｍｏｌ〜１５ｍｏｌ
％の組成内に酸化スズＳｎＯ＿２を１ｍｏｌ％〜３ｍｏ
ｌ％添加したことを特徴とする単結晶フェライト。Ferric oxide Fe_2O_3 is 61.5 mol% ~ 65
mol%, zinc oxide ZnO is 10 mol% to 20 mol
%, manganese oxide MnO is 28.5 mol to 15 mol
% composition of tin oxide SnO_2 from 1 mol% to 3 mo
A single crystal ferrite characterized by adding 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61233506A JPS6388808A (en) | 1986-10-01 | 1986-10-01 | Single crystal ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61233506A JPS6388808A (en) | 1986-10-01 | 1986-10-01 | Single crystal ferrite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6388808A true JPS6388808A (en) | 1988-04-19 |
Family
ID=16956095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61233506A Pending JPS6388808A (en) | 1986-10-01 | 1986-10-01 | Single crystal ferrite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6388808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6595674B1 (en) | 1998-07-02 | 2003-07-22 | Ccs Inc. | Lighting device for surface inspection |
-
1986
- 1986-10-01 JP JP61233506A patent/JPS6388808A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6595674B1 (en) | 1998-07-02 | 2003-07-22 | Ccs Inc. | Lighting device for surface inspection |
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