JPS60127242A - Iron-lead amorphous compound material and its production - Google Patents

Abstract

PURPOSE:To obtain an iron-lead amorphous compound material composed of Fe3O4 and PbO at a specific ratio and having excellent magnetic property, by heating and melting a mixture of iron oxide and lead oxide in an inert atmosphere or in vacuum, and quenching the molten mixture at an extremely high rate of quenching. CONSTITUTION:A mixture composed of iron oxide and lead oxide at a specific ratio is put into a tube 7, and melted by heating in an inert atmosphere or in vacuum at a temperature higher than the melting point of said mixture by 50-200 deg.C with a dielectric heating coil 5. The molten mixture is ejected by the pressure of an inert gas through a nozzle 11 having a slit, circular or elliptical opening toward the surface of the quenching roll 13 rotating at a circumferential speed of 5-35m/sec in an inert atmosphere or in vacuum, and is quenched at an extremely high rate of quenching (i.e. 10<4>-10<6> deg.C/sec) by contacting with the surface of the roll 13. An iron-lead amorphous compound material having a composition of (Fe3O4)1-x.(PbO)x (0.25<=x<=0.75) can be prepared by this process.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel iron-lead amorphous compound material and a method for producing the same.

In recent years, with the development of electronics and related technologies, research has been actively conducted on oxide-based ceramics mainly containing iron oxide (Fea○4) and their single crystals. Research is being conducted as a conversion element material in fields such as atmospheric gas-electricity, photoacoustic polarization, and X-ray spectroscopy, and as a catalyst material. l”e30t and PbO
As a stable compound with several types of crystals, 2~
Although research on single crystallization has been actively conducted, research on amorphous compounds has not been conducted.

The present invention provides an iron-lead amorphous oxide that has been completely unknown heretofore. That is, the present invention provides (Fe 3
0t) 1-x ・(PbO)x (However, 0.25
≦X≦0.75), and iron oxide corresponding to (Fe 30t ) +-x ・(Pb O)x (where X is the same as above) Production of an iron-lead amorphous compound material characterized by heating and melting a mixture of lead oxide and lead oxide in an inert atmosphere or vacuum, and then ultra-quenching it in an inert atmosphere or vacuum. It is related to the method.

The iron-lead amorphous oxide of the present invention can be used as a magnetic material, a photo-responsive element, a temperature-responsive element, a magnetic memory material, an ion-conductive material, a magnetic tape, a catalyst, a light-transparent conductive material, a dielectric material, It is useful as an optical-electrical switching element, a thermal-electrical switching element, etc.

The present invention further provides (Fe s Ot ) +−x ・(Pb O) x
(However, 0.25≦×≦0.75)
Oriented polycrystal I! characterized by heat treating a lead-based amorphous compound material at a temperature below its crystallization temperature! ! A method of manufacturing the material is also provided.

The oriented polycrystalline thin film material obtained in this way can be used for optical memory materials, opto-magnetic memory materials, optical waveguide devices, optical mirrors, surface wave devices, photoacoustic devices, piezoelectric transducers, electroless devices, photoelectric devices, transparent It is useful as an electrode material, bypass capacitor, optical switch, electrochromic device, light modulation device, humidity sensor, temperature sensor, chemical sensor, catalyst, etc.

The present invention further provides (Fe 30t ) IX-V ・(Pb O)x
・(M)V (However, M is C01Nl, Mn, 7n and B
Indicates at least one kind of oxide of a, 0.30≦×≦0
．． 70. An iron-lead amorphous compound material having a composition such that O provide law.

Iron-lead materials containing such a third component have significantly improved magnetic properties, especially compared to materials consisting only of iron-lead, and are even more useful in each of the above-mentioned applications. .

In the present invention, the term ``iron-lead amorphous compound'' includes not only an amorphous compound but also a compound containing a polycrystalline phase in the amorphous compound.

The iron-lead amorphous oxide of the present invention is produced as follows.

The raw material used in the present invention is a mixture of iron oxide and lead oxide, or at least one of cobalt oxide, nickel oxide, manganese oxide, zinc oxide, and barium oxide.
It is a mixture with added seeds.

As the latter third component source, carbonates or the like which can be decomposed by heating to produce oxides may be used.

The composition ratio of these mixtures is (Fe a Ot ) +
-x・(Pb0)× (0.25≦X≦0.75)
The quantitative ratio or (Fe 3 Og) +-x-y ・
(Pb O)x ・(M)y (However, M is Go, Nl,
It represents at least one kind of oxide of Mn, Zn and Ba, and 0.30≦X≦0.70. o<y≦0.50)
This is the quantitative ratio. A raw material mixture having the above composition ratio is heated and melted in an inert atmosphere or in a vacuum, and then ultra-quenched in an inert atmosphere or in a vacuum. The heating and melting may be carried out at a concentration higher than the concentration at which these raw material mixtures are sufficiently melted, preferably at a temperature range of about 50 to 200°C higher than the melting temperature, particularly preferably at a temperature about 80 to 150°C higher. The atmosphere during heating is an inert atmosphere or a vacuum, and is preferably N2 or Ar atmosphere. Next, the melt of the raw material mixture is ultra-quenched.

Ultra-quenching is an essential requirement for the method of the present invention, and only through this can a new amorphous compound be obtained.

Ultra-quenching is usually carried out at a cooling rate of about 104 to 10"C/sec.A wide variety of methods can be used for this ultra-quenching as long as it can cool at the above-mentioned cooling rate. A typical example is a method in which a melt of a raw material mixture is injected to solidify the atomic arrangement in the liquid state.

An example of a quenching apparatus for a molten raw material mixture used in carrying out the method of the present invention will be described below with reference to the drawings.

Figure 1 shows the main body of the rapid cooling device (3) installed on the stand (1).
) is shown. The quenching device consists of a dielectric heating coil (5
), (5)..., raw material heating tube (7), support (9) for the tube (7), nozzle (11) for spouting molten raw material, quenching roll (13), nozzle (11) ) cooling nozzle <15), swirl prevention air nozzle (17), fine adjustment mechanism (19) for nozzle -〇- (11), air cylinder (21)
), a cooling material receiving box (23), a cooling material outlet (25), etc. are the main components.

By installing a cooling fan inside the cooling roll (13) and providing an inert gas inlet such as N2 or Ar at the end of the roll surface, the molten raw material can be rapidly cooled stably. I can do it.

Figure 2 shows details of the support (9). In FIG. 2, the support (9) includes a cooling water inlet passage (29) equipped with a valve (27), a cooling water discharge passage (31), and a needle pulp (
blow air introduction passage (35) with roll (1
3) and the nozzle (11) fine adjustment mechanism (37)
) and a rectifying perforated plate (39) for uniformly extruding the raw material melt
It is equipped with

When carrying out the method of the present invention using the quenching device (3) shown in FIGS. 1 and 2, first, a raw material mixture of a predetermined composition is stored in a tube (7) having a nozzle (11) for blowing out the melt. do. The tube (7) is preferably made of a material that is sufficiently durable under high temperature non-oxidizing atmosphere conditions, such as platinum-rhodium, iridium, silicon nitride, boron nitride, etc. Note that the material of the portion not in direct contact with the raw material melt may be high melting point ceramics, glass, or metal. The shape of the nozzle opening is appropriately determined depending on the target product; for example, a round shape is used for a thin linear material, and a slit-like shape is used for a wide product. The shape of the nozzle mouth is
It may be oval or other shape. The raw material mixture stored in the tube (7) is then heated to a temperature higher than its melting point to form a melt, and then is poured from the mouth of the nozzle (11) onto the surface of the roll (13) rotating at high speed. Then, inert gas is blown out at a constant gas pressure, and the product is rapidly cooled on the roll surface. The blowing angle of the raw material melt between the nozzle opening and the roll surface may be perpendicular to the roll surface if the width of the target compound is about 3 mm or less, or perpendicular to the roll surface if the width is about 3+ am or more. It is 0° to 45°.

Although these blowout angle adjustment mechanisms can be incorporated into the device itself as a mechanism that can set a predetermined angle, it is preferable to process the nozzle itself.

The heating method for the raw material mixture is not particularly limited, but it is usually carried out in a furnace equipped with a heating element, a dielectric heating furnace, or a condensing heating furnace.

The temperature of the raw material melt is preferably about 50 to 200°C, preferably 80 to 150°C higher than its melting point. If the temperature is too close to the melting point, there is a risk that the melt will cool and solidify near the nozzle while it is being blown onto the roll surface.On the other hand, if it is too high, it will be difficult to rapidly cool the melt on the roll surface. Tend.

The pressurizing gas used to blow out the melt onto the roll surface is preferably an inert gas, such as argon, nitrogen, helium, etc., in order to maintain the melt raw material in a predetermined oxidation state. The gas pressure depends on the size of the nozzle opening, but
Usually 0.1~2.0Jl/CI" preferably 0.5~
It is about 1.0 kg/cm2. Further, the distance between the nozzle opening and the roll surface when blowing out the raw material melt is 0.01 to 1.
Approximately 0.01ill is good, more preferably 0.05~○
, 5IlIi. If it is smaller than 0.0111111, the puddle amount will be very small and a uniform material cannot be obtained, while if it is larger than 1.0IlIi, the puddle opening will be excessive or formed due to the interfacial tension of the composition melt. If the thickness of the puddle is greater than the puddle thickness, the puddle may tend to be difficult to form.

The material of the roll includes copper and its alloy with good thermal conductivity, the above-mentioned materials having a hard chromium plating layer, steel, stainless steel, and the like. The circumferential speed of the roll is 5m/sec~3
By rapidly cooling the raw material melt at a rate of 51/sec, preferably 101/sec to 20 IIl/sec, the desired amorphous compound material of good quality can be obtained. At this time, the roll peripheral speed is 51/
If it is less than 1 second, it tends to be difficult to become amorphous.
I don't like it very much. When the peripheral speed of the roll is higher than 351/sec, the shape of the target material obtained becomes very thin and becomes scaly or fine powder, but the material structure is still the same as the amorphous compound of the present invention. It is the material.

The compound of the present invention is produced under reduced pressure to high vacuum or in an inert gas atmosphere by blowing the melted raw material onto the rotating roll surface.

When heating and melting the raw material mixture in a tube, it is necessary to completely melt the mixture. However, before the mixture is completely molten, some of the liquefied material may flow out from the nozzle tip, so the nozzle tip is locally cooled to prevent the melt from flowing out. It is preferable. A typical means for locally cooling the nozzle is to blow a cooling gas onto the tip of the nozzle, and the gas is preferably an inert gas such as argon, helium, or nitrogen.

The novel amorphous compound material according to the present invention usually has a
It has a thickness of about 10 μm and is a very brittle material.

For this reason, after the material is rapidly cooled and solidified on the roll surface, it is preferable that stress is not applied to the material as much as possible. One of the causes of stress addition is the large turbulent flow in the air layer on the roll surface caused by the wind phenomenon caused by roll rotation in the atmosphere. In order to prevent this turbulent flow and to improve the adhesion between the molten raw material mixture to be rapidly cooled and the roll surface, a countercurrent blowing nozzle for preventing wind blowing, that is, a first
Install an anti-eddy current nozzle (17) as shown in the figure, or install a fan fixedly inside the roll.

In the latter case, the turbulent flow generated inside the roll due to rotation of the roll is absorbed into the roll through a variable-diameter gas inlet provided at the end of the roll surface, and is discharged from the front of the roll axis, allowing the gas to flow on the roll surface. By moving the melt into the interior, the molten material is pressed more closely against the roll surface, and furthermore, the roll itself can be cooled by blowing and moving the gas. In addition, in order to maintain the dimensional uniformity of the obtained material,
If grooves for cutting the material are provided on the roll surface at right angles to the rotation direction, material cut to a constant size can be obtained.

The atomic arrangement structure of the iron-lead compound of the present invention changes greatly depending on the mixing ratio of raw materials, and specifically, it can be broadly classified as follows. First, (Fe30t)+-x'
(pb 0) If x is 0.30≦x≦0.70, a 100% amorphous compound is obtained, and
In the ranges of ≦×<0030 and 0.70<X≦0.75, an oriented polycrystalline mixed amorphous compound containing an Fe50 crystal phase and a PbO crystal phase is obtained, and ×<0.25 and 0. When 75<X, a material mainly composed of crystalline phase can be obtained. Co, Ni, Mn, Zn and B as the third component
When at least one kind of oxide of a is contained, an amorphous compound material can be obtained in all composition ranges. FIG. 3 shows the production range of the material of the present invention consisting only of iron and lead.

When the circumferential speed of the quenching roll of the quenching device used is within the range of 5 m/sec to 35 m/sec, no major changes are observed in the structure of the material obtained in each composition range.

The oriented polycrystalline thin film material of the present invention is (Fe a Ot ) +-x ・(Pb O) obtained as described above.
An iron-lead amorphous compound material with a composition x (0.25≦×≦0.75) is subjected to thermal analysis to determine its crystallization temperature (T
After c), the compound material is heat-treated at a temperature below the crystallization temperature for a predetermined period of time. Note that even at temperatures below the crystallization temperature, if the heat treatment time is too long, a non-oriented polycrystalline material will result, so care must be taken in this regard.

For example, (1”e a Ot ) +−x ・(Pb
The crystallization temperature of the iron-lead amorphous compound material where X=0.67 is 377°C, and when this is heat-treated in the atmosphere, the following materials can be obtained depending on the conditions.

1. 375°C x 10 minutes: Oriented polycrystalline material 2. 375
℃×30 minutes: Polycrystalline 3, 360℃×10 minutes: Amorphous 4, 360℃×30 minutes: Oriented polycrystalline 5, 360
°C x 60 minutes: Polycrystalline further, (Fe a Oh ) 1-X-V ・(pb
O)x ・(NiO)y, x-0,65, ■-
The crystallization temperature of an amorphous compound material with a composition of 0.03 is
The temperature is 416°C, and when this is heat-treated in the atmosphere, the following materials can be obtained depending on the conditions.

1. 415°C x 10 minutes: Oriented polycrystalline material 2. 415
℃×30 minutes: Polycrystalline 17-3, 390℃×10 minutes: Amorphous 4, 390℃×30 minutes: Oriented polycrystalline 5, 390
°C x 60 minutes: Polycrystalline When identifying the structure of the material of the present invention, confirm the presence or absence of crystallinity and analyze the structure using X-ray diffraction and polarized light microscopy, and observe a small portion using a scanning electron microscope. I did it.

The features of the present invention will be further clarified by examples below.

Example 1 FesO4 (purity 99.9%) and PbO (purity 99%)
．． 9%) or further blended with Co20s (purity 99.9%) or N10 (purity 99.9%) in a predetermined composition, mixed uniformly, and then calcined at 850°C for 30 minutes to use as a composition raw material. . The obtained composition raw material was transferred to a platinum tube (diameter 10
■-×Length 150Peng■), installed in the dielectric heating coil, oscillating tube fiber voltage 13V1 anode voltage 10KV,
Grid current 120-150mA, anode current 1.2-1.8
Dielectric heating was performed under the conditions of A. The completely molten raw material was blown onto the surface of a rapidly cooling rotary roll using dry compressed air to be rapidly cooled.

Tables 1 and 2 show the composition and manufacturing conditions. Sample Nos. 1 to 20.25 and 29 in Tables 1 and 2 show ribbon-shaped amorphous oxide materials of the present invention. Also, N
O, 24 is a thin piece because the rotational speed of the roll is high, but it can be used in fields such as catalysts where there are no restrictions on shape.

In addition, nozzle shape A means 0, 211X 4 u
+ indicates a slit-shaped nozzle, and nozzle shape B indicates a circular nozzle with a diameter of 0.2+u+.

21- 22- -29 - Example 2 Samples FI No. 5 and No. 30 of Example 1 were placed in air at 36
After heat treatment at 0°C for 30 minutes, X-ray diffraction showed one sharp diffraction peak at the diffraction angle (2θ), confirming a change from an amorphous structure to an oriented polycrystalline structure. .

Reference example 1 CF630&)t-x ・(PbO)× in x
Sample No. of Example 1 above corresponds to =0.50.

The X-ray diffraction results for 8.10, 12.13 and 15 are shown in FIG. The peripheral speed of the quenching roll is 5.18+/
It is clear that there is no significant change in the atomic arrangement structure of the material obtained within the range from 34.54 amounts/sec (No, 15).

Reference Example 2 Sample No. of the above Example 1 corresponding to x=0.67 in (Fes Oh )1-x .(Pb O)x.

The differential thermal analysis results of No. 7 are shown in FIG.

In FIG. 5, TC is the crystallization temperature, To is 30- The lath dislocation point and ip indicate the melting point, respectively.

Reference example 3 (Fea Ot)+-x ・(PbO) × in x
- Sample No. of Example 1 above corresponding to 0.67.

A photograph showing the appearance of No. 7 is shown as reference drawing ■.

Reference Example 4 Scanning electron micrograph of sample No. 7 of Example 1 above (
20,000 times and 870 times) are shown as reference drawings ■ and ■, respectively.

Reference Example 5 Sample No. of the above Example 1 corresponding to x-0.65 in <Fe a Ot ) +-x .(Pb O)x.

The infrared absorption spectrum of No. 3 is shown in FIG.

Reference Example 6 FIG. 7 shows magnetization curves at room temperature when x is changed in (Feast)tx·(PbO)x. Curves (A), (B) and (C) are respectively Fe s O
The results are shown for amorphous materials with t/Pb0-1/2.2/3 and 1/1, and the curve (D) is )"e a
Oh /Pb O-2/3r A certain amorphous compound material is N
The results are shown for crystalline materials obtained by heating in two atmospheres.

Reference example 7 ×- in (Fe3Ot)t-x ・(Pb0)x
Sample No. of Example 1 above corresponds to 0.60.

FIG. 8 shows the change in magnetization with respect to temperature at a magnetic field strength of 112,900 Oersted.

Reference Example 8 (Fe 30t ) +−x ・(Pb O) Sample No. of the above Example 1 corresponding to X=0.60 in x.

FIG. 8 shows the change in magnetic susceptibility with respect to temperature of No. 19.

Curve (A) is the result for the amorphous compound material, and curve (B) is the result for the crystalline material.

Reference Example 9 (Fe a Ot > +-x ・(Pb O) High-pressure mercury lamp (2
Fig. 10 shows the response to magnetization change due to light irradiation (50W). In FIG. 10, the start time of irradiation was set as 0 minutes, and irradiation was ended after 4 minutes and 30 seconds.

The various parameters during the test are as follows.

Sample amount: 0.0041-0.004711! .

Magnetic field: 12,000 Oersted, Temperature = 28°C, Wavelength: 3,022 to 5,770 angstroms, Distance between light source and sample: 250 mg+ In addition, the composition (molar ratio) and crystal form of the compounds shown by curves (A) to (D) are as follows. It is as follows.

(A): Fe a Ot /Pb O = 1/2° Amorphous material (B): Fe 30a /Pb O = 1/2, oriented crystal material (Sample No. 5 heat-treated in Example 2) (C): Fe @Ot /Pb O-2/3, amorphous material (D): Fe a Ot /Pb O = 1/1, amorphous material reference example 10 Sample No. of Example 1, 30. The magnetization curves at room temperature for Samples No. 31, 32, and 33 - Sample No. 30 heat-treated in Example 2 are shown in FIG. 11. Curve (A) ~ (
The composition (molar ratio) and crystal form of the compounds represented by D) and point (D) are as follows.

(A): Fe@OL/PbO/Co 20a=1
/210.5 Amorphous material (sample No. 31) (B): Fe a 0 & /Pb O/Co 20
s-1/210.1 Oriented polycrystalline material (heat treated sample No.

30) (C) : l”e a Ot /Pb O/Ni O
=1/210.1 Amorphous material (sample No. 32) (D): Fe a 04 /Pb O/Co 20
3-1/210.1 Amorphous material II (Sample No. 30> (E): Fe a Oh /Pb O-1/2 Amorphous material (Sample No. 3) Reference example 11 34- Example 1 Table 3 shows the physical properties of sample Nos. 30, 31 and 32 and the sample of Example 2 as magnetic materials.

Table 3 Reference Example 12 (Fe a OL) +-x-y ・<Pb O)x
・.

FIG. 12 shows the differential thermal analysis results of sample No. 32 of Example 1, which corresponds to x-0, 65, ■-〇, 03 in (NIO)y.

[Brief explanation of drawings]

FIG. 1 is a front view of an example of a quenching device for molten raw materials used in the method of the present invention, FIG. 2 is a partially enlarged detailed drawing of the quenching device in FIG. 1, and FIG. Drawings showing the composition range; FIG. 4 is an X-ray diffraction diagram of some materials of the present invention; FIG. 5 is a differential thermal analysis diagram of one material according to the present invention; FIG.
The figure is an infrared absorption spectrum diagram of one material according to the present invention,
FIG. 7 shows (Fe s Ot ) +−x ・(Pb
O) A graph showing the magnetization curve at room temperature when X changes at A graph showing changes in magnetic susceptibility with respect to temperature of one material, FIG. 10, shows (Fe a Ot ) +−x ・(P
Fig. 11 is a graph showing the magnetization curves of several materials according to the present invention. Differential thermal analysis diagrams are shown respectively. (1)... Frame, (3)... Rapid cooling device body, (5), (5)... Dielectric heating coil,
(7)... Tube for heating raw materials, (9)...
...Support for raw material heating tube, (11)...
... Nozzle for spouting molten raw material, (13) ... Roll for rapid cooling, (15) ... Cooling nozzle for nozzle <11), (17) ... Preventing vortex flow air nozzle,
(19) Fine adjustment mechanism for nozzle (11), (
21)...Air cylinder, (23)...
・Receiving box for cooled material, (25) ・・Cooled material outlet, (27) ・・Valve, (29
)...Cooling water inlet passage, (31)...Cooling water discharge passage, (33)...Needle valve, (
35)...Blow air introduction path, (37)...
... Mechanism for finely adjusting the interval between the roll (13) and the nozzle (11), (39) ... Perforated plate for rectification. (That's all) 37- Unexamined Japanese Patent Application Sho GO-127242 (13)

Claims (1)

[Claims] (1) An iron-lead amorphous compound material having a composition of (Fe304)+-x.(PbO)x (0.25≦×≦0.75). ■ Claim 1 where 0.30≦X≦0.70
Iron-lead amorphous compound material. ■ Claim 1 where 0.70<x≦0.75
Iron-lead amorphous compound material. (2) The iron-lead amorphous compound material according to claim 1, wherein 0.25≦x<0.30. ■ It is characterized by heating and melting a mixture of iron oxide and lead oxide in an inert atmosphere or vacuum, and then ultra-quenching the melt in an inert atmosphere or vacuum (Fea Oh).
t-x ・(Pb O)x (0.25≦X≦0
．． 75) A method for producing an iron-lead amorphous compound material having the composition. (2) A method for producing an iron-lead amorphous compound material according to claim 5, wherein the material is ultra-rapidly cooled at a cooling rate of 10' to 108° C./sec. (2) A method for producing an iron-lead amorphous compound material according to claim 5 or 6, wherein the raw material melt is ultra-quenched by bringing it into contact with a solid. ■ The raw material mixture is put into a heating tube equipped with a nozzle equipped with a slit-shaped, circular, or elliptical outlet, and after heating and melting at a concentration 50 to 200°C higher than the melting point of the mixture, the mixture is heated at a rate of 5 m/sec. The iron-lead non-containing material according to any one of claims 5 to 7, wherein the molten material is blown out through the nozzle onto the surface of a roll rotating at a circumferential speed of ~35 cm/sec for ultra-quenching. Method for producing crystalline compound materials. ■ (Fea Ot )+-x ・(Pb O)x (
A method for producing an oriented polycrystalline thin film material, which comprises heat-treating an iron-lead amorphous compound material having a composition (0.25≦X≦0.75) below its crystallization temperature. @ (Fea Ot)s-x-y ・(Bl 2 O
s )x ・(M)V (where M is Go, Nl, Mn,
Indicates at least one kind of oxide of Zn and 3a, O≦X
≦0.70, o<y≦0.50). ■ After heating and melting a mixture consisting of at least one of cobalt oxide, nickel oxide, manganese oxide, zinc oxide and barium oxide, iron oxide and bismuth oxide in an inert atmosphere or in vacuum, the melt is heated in an inert atmosphere or in a vacuum. Characterized by ultra-rapid cooling in vacuum (Fe s 04)
+-x-y ・(Pb O)x ・(M)y (However, M
Haco, Ni. At least one of the oxides of Mn, Zn and Ba, 0.30≦×≦O, 701Q<y≦0.50)
A method for producing an iron-lead amorphous compound material having the following composition. [Phase] 104-b A method for producing an iron-lead amorphous compound material according to claim 11. 0. The method for producing an iron-lead amorphous compound material according to claim 11 or 12, wherein the raw material melt is ultra-quenched by bringing it into contact with a solid. [Phase] The raw material mixture is put into a heating tube equipped with a nozzle with a slit-shaped, circular or elliptical outlet, and after heating and melting at a temperature 50 to 200°C higher than the melting point of the mixture, 5+a The iron-lead according to any one of claims 11 to 13, wherein the melt is blown out through the nozzle onto the surface of a roll rotating at a circumferential speed of 35-/sec to ultra-quenched. Method for producing amorphous compound material. @ (Fea Ot)t-x-y ・(Pb O)x
・(M)y (M is Co, Ni, Mn, Zn and B
Indicates at least one kind of oxide of a, 0.30≦×≦0
．． 7010<V≦0.50) A method for producing an oriented polycrystalline thin film material, which comprises heat-treating an iron-lead amorphous compound material at a temperature below its crystallization temperature.