JPS63222097A - Mn-zn based single crystal ferrite - Google Patents
Mn-zn based single crystal ferriteInfo
- Publication number
- JPS63222097A JPS63222097A JP62052208A JP5220887A JPS63222097A JP S63222097 A JPS63222097 A JP S63222097A JP 62052208 A JP62052208 A JP 62052208A JP 5220887 A JP5220887 A JP 5220887A JP S63222097 A JPS63222097 A JP S63222097A
- Authority
- JP
- Japan
- Prior art keywords
- single crystal
- mol
- crystal ferrite
- ratio
- based single
- 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
- 239000013078 crystal Substances 0.000 title claims abstract description 17
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000011701 zinc Substances 0.000 claims abstract description 9
- 239000011787 zinc oxide Substances 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 18
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 abstract description 20
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- -1 Ca02Co20 Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明はＶＴＲ映像記録再生用磁気ヘッド等に適した１
ｙｊｎ−Ｚｎ系単結晶フェライトの改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention is suitable for magnetic heads for recording and reproducing VTR video.
This invention relates to improvement of yjn-Zn single crystal ferrite.
［従来の技術］
磁気ヘッド用磁性月利としては、Ｆｅ−Ｎｉ系合金、Ｆ
ｅ−Ａｌ−８ｉ系合金、その他各種の金属材料やフエラ
イ］・系材料など種々の材料が使用されている。これら
のうち１ｙｌｎ−７ｎフ１ライト単結晶は透磁率μが大
きいこと、飽和磁束密度ＢＳが大きいこと、保磁力ＨＣ
が小さいこと、キコリ一温度”ｌｃが高いこと、また精
密加工に耐え、耐摩耗性が良好であることなど優れた特
性を備えているため、ＶＴＲ用ヘッド等に広く用いられ
ている（例えば特開昭６１−５４．００８号）。[Prior art] As magnetic materials for magnetic heads, Fe-Ni alloy, F
Various materials are used, such as e-Al-8i alloy, various other metal materials, and ferrite-based materials. Among these, the 1yln-7n flylite single crystal has a large magnetic permeability μ, a large saturation magnetic flux density BS, and a coercive force HC.
It is widely used in VTR heads, etc. because of its excellent characteristics such as small chip temperature, high chip temperature (LC), ability to withstand precision machining, and good wear resistance. Kaisho 61-54.008).
［発明が解決しようと覆る問題点］
しかしながら、Ｍｎ−Ｚｎ系単結晶フエライ１〜を用い
て構成した磁気ヘッドで磁気テープを摺動した場合には
ノイズが比較的大きいなどの問題があった。このため、
高品位テレビ用ＶＴＲなどのように、高周波領域で高い
Ｓ／Ｎ比（ノイズ出力比）が要求される場合には、必ず
しもＳ／Ｎ比特性は満足のゆくものではないとされてい
る。[Problems to be Solved by the Invention] However, when a magnetic head constructed using the Mn--Zn single crystal ferrite 1 is used to slide a magnetic tape, there are problems such as relatively large noise. For this reason,
When a high S/N ratio (noise output ratio) is required in a high frequency region, such as in a high-definition television VTR, the S/N ratio characteristics are not necessarily satisfactory.
この問題点を解決すべく、従来から、Ｍｎ−Ｚｎフェラ
イト単結晶の特性を改善覆る目的で、ｃｏ、 Ｔｉ、ｖ
、またはＺｒ等の酸化物など、種々の成分を添加するこ
とが数多く提案されている（特開昭５６−７８４２８号
、特開昭６１−１４６７９５号、特開昭５６−６３９０
０号など）。In order to solve this problem, co, Ti, v
Many proposals have been made to add various components such as oxides such as Zr, or oxides such as Zr.
0 etc.).
しかしながら、近年のより高度化する磁気記録技術の進
展によって、磁気ヘッドとしてより適切な特性を持つ材
料の要求が出ている。However, as magnetic recording technology has become more sophisticated in recent years, there has been a demand for materials with more suitable characteristics for magnetic heads.
本発明は上記要望に対処してなされたものであり、高い
Ｓ／Ｎ比を有するＭｎ−７ｎ系単結晶フエライトを提供
することを目的とするものである。The present invention has been made in response to the above-mentioned needs, and an object of the present invention is to provide a Mn-7n single crystal ferrite having a high S/N ratio.
［問題点を解決するための手段］
上記目的を達成するために本発明は、酸化鉄５０〜６５
モル％、酸化亜鉛１３〜２６モル％、残部が酸化マンガ
ンの組成比からなるＭｎ−Ｚｎ単結晶フェライトにおい
て、ＧｅＯ２を０．１〜５．０ｗｔ％添加したことを特
徴とするものである。[Means for solving the problems] In order to achieve the above object, the present invention provides iron oxide 50 to 65
The Mn-Zn single crystal ferrite has a composition ratio of 13 to 26 mol % of zinc oxide and the remainder of manganese oxide, and is characterized by adding 0.1 to 5.0 wt % of GeO2.
さらに本発明は、上記の１ｙｌｎ−Ｚｎ系単結晶フェラ
イトに、副成分としてＳ ｉ Ｏ２，Ｃａｂ。Furthermore, the present invention includes SiO2 and Cab as subcomponents in the above-mentioned 1yln-Zn single crystal ferrite.
Ｃｏ２０３ 、ＴｉＯ２、Ｖ２０５のうちの１種または
２種以上を０．５ｗｔ％以下含有させて、より一層Ｓ／
Ｎ比を高めたことを特徴とするものである。By containing one or more of Co203, TiO2, and V205 at 0.5 wt% or less, S/
It is characterized by an increased N ratio.
［実施例］ 以下、本発明を実施例に基づき詳述する。[Example] Hereinafter, the present invention will be explained in detail based on Examples.
実施例１
Ｍｎ０２９モル％、Ｚｎ０１８モル％、Ｆｅ２ｏ３５３
モル％なる組成にＧｅＯ２を０．０．１゜２．０，５．
０．７．５ｗｔ％で添加し、混合機で混合した後仮焼を
行った。これを白金ルツボに入れ溶融した後、ルツボを
下降させ、ルツボ先端から徐々に冷却して単結晶フェラ
イトを育成した。Example 1 Mn029 mol%, Zn018 mol%, Fe2o353
GeO2 was added to the composition of 0.0.1°2.0,5.
It was added at 0.7.5 wt%, mixed with a mixer, and then calcined. After placing this in a platinum crucible and melting it, the crucible was lowered and gradually cooled from the tip of the crucible to grow single crystal ferrite.
このＪ：うにして得られた単結晶フェライトの諸特性を
測定した。その結果を第１表に示す。次に、第１図の概
略構成図に示すような磁気ヘッドを作製し、そのヘッド
特性を測定した。その結果も第１表に示す。尚、第１図
において、１．２は磁気コア、３はギャップ形成面、４
は巻線窓、５，６は巻線、７はテープ走行方向を夫々示
す。ここで、Ａは（２１１）面、Ｂは（１１１）面、Ｃ
は（１１０）面である。すなわち、第１表はμ。、５／
μ５．。（０，５ＭＨｚと５ＭＨｚのμの比）、飽和磁
束密度Ｂ１０’磁歪定数λＳおよびヘッドのトラック中
２８μｍ１テープスピード５．８ｍ／ｓｅｃ、測定周波
数４ＭＨ２の条件で測定したＳ／Ｎ比（ノイズ出力比）
を示したものである。Various properties of the single-crystal ferrite obtained in J: were measured. The results are shown in Table 1. Next, a magnetic head as shown in the schematic diagram of FIG. 1 was manufactured, and its head characteristics were measured. The results are also shown in Table 1. In Fig. 1, 1.2 is a magnetic core, 3 is a gap forming surface, and 4 is a magnetic core.
1 shows the winding window, 5 and 6 the windings, and 7 the tape running direction. Here, A is the (211) plane, B is the (111) plane, and C
is a (110) plane. That is, Table 1 shows μ. ,5/
μ5. . (ratio of μ between 0.5 MHz and 5 MHz), saturation magnetic flux density B10' magnetostriction constant λS, and S/N ratio (noise output ratio) measured under the conditions of 28 μm in head track, 1 tape speed of 5.8 m/sec, and measurement frequency of 4 MH2. )
This is what is shown.
第１表から明らかなように、ＧｅＯ２を０．１ｗｔ％添
加することによりμ。、５／μ５．。は減少し、λＳは
増加しＳ／Ｎ比は無添加の場合より１ｄＢ向上している
ことがわかる。As is clear from Table 1, by adding 0.1 wt% of GeO2, μ. , 5/μ5. . It can be seen that λS decreases, λS increases, and the S/N ratio is improved by 1 dB compared to the case without additives.
ざらにＧｅＯ２１を増加させてゆくとμ。５．／μ５．
。は減少し、λＳは増加し、Ｓ／Ｎ比はさらに向上しＧ
ｅＯ２２ｗｔ％添加するとＳ／Ｎ比は３１．５ｄＢとな
る。しかし、７．５ｗｔ％添加するどλＳは急激に大き
くなりＳ／Ｎ比は２９．８ｄＢとなり劣化してしまう。As GeO21 is gradually increased, μ. 5. /μ5.
. decreases, λS increases, the S/N ratio further improves, and G
When 22 wt% of eO is added, the S/N ratio becomes 31.5 dB. However, when 7.5 wt% is added, λS increases rapidly and the S/N ratio becomes 29.8 dB, resulting in deterioration.
以上の結果から、ＧｅＯ２を０．１〜５．０ｗｔ％添加
することによりＳ／Ｎ比は大幅に改善されていることが
わかる。From the above results, it can be seen that the S/N ratio is significantly improved by adding 0.1 to 5.0 wt% of GeO2.
実施例２ 組成Ｍｎ０２９−Ｅル％、Ｚｒ１０１８−Ｅル％。Example 2 Composition Mn029-Ele%, Zr1018-Ele%.
Ｆｅ２０３５３モル％に、ＧｅＯ２を２ｗｔ％および、
副成分としてＳｉＯ２，Ｃａ０２Ｃｏ２０ 、ＴｉＯ
２，Ｖ２Ｏ５のうちの１種または２種以上を添加して実
施例１と同様に試料を作製した。そして、諸特性を測定
した結果の代表例を第２表に示す。Fe20353 mol%, GeO2 2wt% and
SiO2, Ca02Co20, TiO as subcomponents
Samples were prepared in the same manner as in Example 1 by adding one or more of V2O5 and V2O5. Table 2 shows representative examples of the results of measuring various properties.
第２表から明らかなように、Ｇ ｅ Ｏ２２ｗ ｔ％に
副成分としてＳｉＯ、ＣａＯ，Ｃｏ２Ｏ３゜ＴｉＯ２”
２０５のうちの１種または２種以上を添加することに
より、ＧｅＯ２を単独添加したよりもさらにＳ／Ｎ比は
改善されていることがわかる。比較例８のように１．Ｑ
ｗｔ：％添加するとλＳが大きくなりＳ／Ｎは劣化して
しまうので副成分の添加量としては０．５ｗｔ％以下が
好ましい。As is clear from Table 2, SiO, CaO, Co2O3゜TiO2'' are added to G e O22wt% as subcomponents.
It can be seen that by adding one or more types of GeO2, the S/N ratio is further improved than when GeO2 is added alone. As in Comparative Example 8, 1. Q
If wt:% is added, λS increases and S/N deteriorates, so the amount of the subcomponent added is preferably 0.5 wt% or less.
実施例３
組成Ａ ：Ｍｎ０２５モル％ Ｚｎ０３０モル％Ｆｅ２
０３４５モル％
組成り：Ｍｎ０４５モル％ Ｚｎ０１０モル％Ｆｅ２０
３４５モル％
組成Ｃ：Ｍｎ０ ５モル％ Ｚｎ０２５−ｔ＝ル％Ｆｅ
２０３７０モル％
組成り ：Ｍｎ０１７モル％ Ｚｎ０１３モル％Ｆｅ２
０３７０モル％
組成Ｅ ：Ｍｎ０２４モル％ Ｚｎ０２６Ｅル％Ｆｅ２
０３５０モル％
組成Ｆ：Ｍｎ０３７モル％ Ｚｎ０１３−Ｅル％Ｆｅ２
０３５０モル％
組成Ｇ：Ｍｎ０ ９モル％ Ｚ ｎ Ｏ２６−Ｅル％［
０２０３６５モル％
組成１−１：Ｍｎ０２２モル％ Ｚｎ０１３モル％Ｆｅ
２０３６５モル％
組成１ ：Ｍｎ０２９モル％ Ｚｎ０１８モル％Ｆ０２
０３５３モル％
よりなるそれぞれの母体にＧ ｅ ０２２ ｗ ｔ％。Example 3 Composition A: Mn0 25 mol% Zn0 30 mol% Fe2
0345 mol% Composition: Mn045 mol% Zn010 mol%Fe20
345 mol% Composition C: Mn0 5 mol% Zn025-t=le%Fe
20370 mol% Composition: Mn017 mol% Zn013 mol%Fe2
0370mol% Composition E: Mn024mol% Zn026Ele%Fe2
0350 mol% Composition F: Mn037 mol% Zn013-Ele%Fe2
0350 mol% Composition G: Mn0 9 mol% Z n O26-Ele% [
020365 mol% Composition 1-1: Mn022 mol% Zn013 mol%Fe
20365 mol% Composition 1: Mn029 mol% Zn018 mol% F02
0353 mol% G e 022 wt% in each matrix.
Ｇａ５Ｏ１２，５ｗｔ％、Ｃａ０Ｏ，０１ｗｔ％を添加
した各組成を実施例１と同様に作製した。Each composition containing 12.5 wt% of Ga5O and 01 wt% of Ca0O was prepared in the same manner as in Example 1.
その結果を第３表に示す。The results are shown in Table 3.
第３表より組成Ｆ、Ｆ、Ｇ、ｌ−１では組成■と比べて
μ ／μ λＳが大きくなり、Ｓ／ＮＯ，５５，
０・
比も小さくなるが、Ｓ／Ｎ比は３０ｄＢが実現できてい
ることがわかる。しかし、比較例組成Ａ。From Table 3, μ / μ λS is larger for compositions F, F, G, and l-1 compared to composition ■, and S/NO, 55,
It can be seen that the S/N ratio of 30 dB has been achieved, although the 0.0 ratio is also smaller. However, Comparative Example Composition A.
Ｂ、Ｃ，Ｄではμ ／μ λＳが急激に大０．５
５．０・
きくなりＳ／Ｎ比も３０ｄＢ以下に劣化してしまう。For B, C, and D, μ / μ λS suddenly increases to 0.5
5.0. The S/N ratio deteriorates below 30dB.
以上の結果より、Ｓ／Ｎ比が３０ｄＢ以上を確保するた
めには組成として、酸化鉄５０〜６５モル％、酸化亜鉛
１３〜２６モル％、残部が酸化マンガンである必要があ
る。From the above results, in order to ensure an S/N ratio of 30 dB or more, the composition needs to be 50 to 65 mol% iron oxide, 13 to 26 mol% zinc oxide, and the balance manganese oxide.
以上の結果からμ ／μ５．。≦３．５゜０．５
一〇、３Ｘ１０−６≦λ≦５Ｘ１０−６の範囲にあると
Ｓ／Ｎ比は３０ｄＢ以上が実現できていることがわかる
。すなわち、これを実現するためには、酸化鉄５０〜６
５モル％、酸化亜鉛１３〜２６モル％、残部が酸化マン
ガンの組成からなる母体に、ＧｅＯ２を０．１〜５．０
ｗｔ％添加すル必要カある。また、さらに副成分として
、Ｓ ｉ Ｏ２。From the above results, μ/μ5. . It can be seen that in the range of ≦3.5°0.5 10, 3X10-6≦λ≦5X10-6, an S/N ratio of 30 dB or more can be achieved. That is, in order to achieve this, iron oxide 50 to 6
5 mol% of zinc oxide, 13-26 mol% of zinc oxide, and the balance of manganese oxide, and 0.1-5.0 mol% of GeO2.
It is necessary to add wt%. Further, as a subcomponent, S i O2.
Ｃａｂ、Ｃｏ Ｏ、ＴｉＯ、Ｖ２Ｏ５のうちの１種ま
たは２種以上を０．５ｗｔ％以下含有させることにより
一層Ｓ／Ｎ比を高めることができる。The S/N ratio can be further increased by containing 0.5 wt% or less of one or more of Cab, Co2O, TiO, and V2O5.
［発明の効果］
以上述べたように、本発明のＭｎＺｎ系単結晶フェライ
トは高いＳ／Ｎ比を有し、そのＴ案内寄与は極めて大き
い。[Effects of the Invention] As described above, the MnZn-based single crystal ferrite of the present invention has a high S/N ratio, and its contribution to T guidance is extremely large.
第１図は、本発明材料により作製した磁気ヘッドの一例
を示す概略描成図である。
１．２・・・磁気コア、３・・・ギャップ形成面。FIG. 1 is a schematic diagram showing an example of a magnetic head manufactured using the material of the present invention. 1.2...Magnetic core, 3...Gap forming surface.
Claims (2)
ル％、残部が酸化マンガンの組成比からなる母体にＧｅ
Ｏ＿２を０．１〜５．０ｗｔ％添加したことを特徴とす
るＭｎ−Ｚｎ系単結晶フェライト。(1) Ge in the matrix with a composition ratio of 50 to 65 mol% iron oxide, 13 to 26 mol% zinc oxide, and the balance manganese oxide.
A Mn-Zn single crystal ferrite characterized by adding 0.1 to 5.0 wt% of O_2.
Ｏ、ＣＯ＿２Ｏ＿３、ＴｉＯ＿２、Ｖ＿２Ｏ＿５を１種
または２種以上を０．５ｗｔ％以下添加含有したことを
特徴とする特許請求の範囲第１項記載のＭｎ−Ｚｎ系単
結晶フェライト。(2) In addition to the above components, SiO_2 and Ca are added as subcomponents.
The Mn-Zn single crystal ferrite according to claim 1, which contains one or more of O, CO_2O_3, TiO_2, and V_2O_5 in an amount of 0.5 wt% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62052208A JPS63222097A (en) | 1987-03-09 | 1987-03-09 | Mn-zn based single crystal ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62052208A JPS63222097A (en) | 1987-03-09 | 1987-03-09 | Mn-zn based single crystal ferrite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63222097A true JPS63222097A (en) | 1988-09-14 |
Family
ID=12908347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62052208A Pending JPS63222097A (en) | 1987-03-09 | 1987-03-09 | Mn-zn based single crystal ferrite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63222097A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63256597A (en) * | 1987-04-14 | 1988-10-24 | Tokin Corp | Single crystal ferrite and its production |
| US5368764A (en) * | 1993-03-31 | 1994-11-29 | Goldstar Co., Ltd. | Mn-Zn-based single crystal ferrite composition |
-
1987
- 1987-03-09 JP JP62052208A patent/JPS63222097A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63256597A (en) * | 1987-04-14 | 1988-10-24 | Tokin Corp | Single crystal ferrite and its production |
| US5368764A (en) * | 1993-03-31 | 1994-11-29 | Goldstar Co., Ltd. | Mn-Zn-based single crystal ferrite composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4582623A (en) | Barium ferrite magnetic powder and recording medium employing the same | |
| JPS61256967A (en) | Manufacture of mn-zn ferrite | |
| JPS63222097A (en) | Mn-zn based single crystal ferrite | |
| JPS6111892B2 (en) | ||
| US4719148A (en) | Magnetic head having a core of Mn-Zn-Co ferrous ferrite | |
| US3652416A (en) | Oxide magnetic materials | |
| JPH04193797A (en) | Single crystal ferrite | |
| JPS61194609A (en) | Composite magnetic head | |
| JPS6156185B2 (en) | ||
| JPH05226135A (en) | Magnetic head | |
| JPS61101458A (en) | Manganese base ferrite composition | |
| JPH0461102A (en) | Mn-zn ferrite single crystal and magnetic head | |
| JP2764428B2 (en) | Single crystal ferrite | |
| JPS59223237A (en) | Mn-zn ferrite for erasing head core | |
| JP3181723B2 (en) | Soft magnetic alloy film | |
| JP3048810B2 (en) | Low loss oxide magnetic material | |
| JPS62119713A (en) | Magnetic head | |
| JPH03109235A (en) | Glass and magnetic head | |
| JPH05166630A (en) | Magnetic material | |
| JPH04132005A (en) | Floating type magnetic head | |
| JPH04177807A (en) | Ferromagnetic material low-loss manganese-zinc ferrite | |
| JPS6267712A (en) | Production of alloy magnetic head | |
| JPS6369798A (en) | Single crystalline ferrite | |
| JPH01160897A (en) | Single crystal ferrite | |
| JPS59194406A (en) | High permeability magnetic material |