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 |
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