JPS63225527A - Superconductive material - Google Patents
Superconductive materialInfo
- Publication number
- JPS63225527A JPS63225527A JP62057369A JP5736987A JPS63225527A JP S63225527 A JPS63225527 A JP S63225527A JP 62057369 A JP62057369 A JP 62057369A JP 5736987 A JP5736987 A JP 5736987A JP S63225527 A JPS63225527 A JP S63225527A
- Authority
- JP
- Japan
- Prior art keywords
- oxides
- superconductive material
- bao
- cuo
- superconducting material
- 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
- 239000000463 material Substances 0.000 title claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 6
- 229910002480 Cu-O Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 7
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 5
- 229910003443 lutetium oxide Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- -1 BaCG3 Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/80—Constructional details
- H10N60/85—Superconducting active materials
- H10N60/855—Ceramic superconductors
- H10N60/857—Ceramic superconductors comprising copper oxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、新しい超伝導性材料に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to new superconducting materials.
（従来の技術）
ある温度以下で電気抵抗がゼロになる超伝導物質は、磁
気浮上列車や医療用の断層診断装置、将来のエネルギー
源と目される核融合などに不可欠な強力磁石、送電損失
の少ない電力輸送用電線や電力貯蔵用の電源、高速コン
ピュータ素子用電橋なと暢広い応用がａ待されている。(Conventional technology) Superconducting materials, whose electrical resistance becomes zero below a certain temperature, are essential for magnetic levitation trains, medical tomographic diagnostic devices, and nuclear fusion, which is considered a future energy source, as well as for power transmission losses. It is expected to find a wide range of applications, such as electrical wires for transporting low-energy electricity, power sources for power storage, and electrical bridges for high-speed computer devices.
しかし、従来の材料は、超伝導体となる臨界温度（Ｔｃ
）が高々２３にと低かったため、冷却のため高価なヘリ
ウムを使わなければならないという欠点があった。However, conventional materials have a critical temperature (Tc) at which they become superconductors.
) was as low as 23 at most, and had the disadvantage of requiring the use of expensive helium for cooling.
このような欠点を除くため、最近Ｌａ−Ｂａ−Ｃｕ−０
からなる材料が開発され（Ｊ、Ｇ、Ｂｅｄｎｏｒｚ ａ
ｎｄ Ｋ、＾、Ｍｕｌｌｅｒ、 Ｚ、、Ｐｈｙｓ、Ｂ、
、１１，１８９−１９３．１９８６）、それを受けて新
たにＹ−Ｂａ−Ｃｕ−０が開発された（Ｃ，Ｗ、Ｃｈｕ
ｆｌｂ、ｔｏ ｂｅｐｕｂｌｉｓｈｅｄ ｉｎ Ｐｈｙ
ｓ、Ｒｅｖ、Ｌｅｔｔ、）、 Ｌｌかし、Ｌａ−Ｈａ−
Ｃｕ−０は、Ｔｃが未だ３Ｇ−３５にと低く、また、Ｖ
−Ｂａ−Ｃｕ・０は、↑Ｃは９８にと高いものの、その
材料合成法が難しく、同じ合成条件によって超伝導性を
示すものと示さないものがあるなど、特性の再現性に難
があるという欠点があった。In order to eliminate such drawbacks, recently La-Ba-Cu-0
A material consisting of (J, G, Bednorz a
nd K, ^, Muller, Z,, Phys, B,
, 11, 189-193.1986), and in response, Y-Ba-Cu-0 was newly developed (C, W, Chu
flb, to be published in Phys.
s, Rev, Lett, ), Ll Kashi, La-Ha-
Cu-0 has a low Tc of 3G-35, and a low V
-Ba-Cu・0 has a high ↑C of 98, but the material synthesis method is difficult, and the reproducibility of properties is difficult, as some exhibit superconductivity and others do not under the same synthesis conditions. There was a drawback.
（発明が解決しようとする問題点）
本発明の目的は、上記の欠点を除くため、Ｔｃが高くか
つ合成が容易な新しい超伝導性材料を提供することにあ
る。(Problems to be Solved by the Invention) An object of the present invention is to provide a new superconducting material that has a high Tc and is easy to synthesize, in order to eliminate the above-mentioned drawbacks.
（問題点を解決するための手段）
本発明は、原料として酸化物、炭酸塩等を用い、焼成に
よりＬｕ−Ｂａ−Ｃｕ−０からなる超伝導物質を得る。(Means for Solving the Problems) The present invention uses oxides, carbonates, etc. as raw materials and obtains a superconducting material composed of Lu-Ba-Cu-0 by firing.
（実施例）
［実施例１〕
Ｌｕ２Ｏ３、ＢａＣＧ３、ＣｕＯを試薬として（１−ｘ
）：’２ｘ：２（ここで、Ｏ’ｘ’ｌ）のモル比で焼成
用原料を秤量、混合後、９００ΦＣの温度において酸素
中ないし空気中で１２時間焼成してＬｕ−Ｂａ−Ｃｕ−
０酸化物を得た。(Example) [Example 1] Using Lu2O3, BaCG3, and CuO as reagents (1-x
):'2x:2 (here, O'x'l) raw materials for firing were weighed and mixed, and then fired at a temperature of 900ΦC in oxygen or air for 12 hours to form Lu-Ba-Cu-
0 oxide was obtained.
これらの酸化物は、複数の相からなる混合物であり、そ
の一つとして、Ｌａ３Ｂａ３Ｃｕ６０１４． ＋（Ｌ、
Ｅｒ−ＲａｋｈＯ他、 Ｊ、５ｏｌｉｄ ５ｔａｔｅ
Ｃｈｅｗ、、 ３７，１５１−１５６．１９８１）のよ
うなペロプスカイト型化合物を含む、この酸化物の抵抗
率の温度変化を調べたところ、Ｘが０．３３（第２図の
ｌで示した組成）から０．８２ （第２図の２で示した
組成）のｌ！Ｉｉ囲でＴｃが８０に以上の超伝導性を示
すことがわかった。その１例として、Ｘが０．５の場合
を第１図に示す、第１因に示すようにこの物質は、Ｔｃ
が９０にの超伝導性をもつ、これらの酸化物は、Ｔｃが
８０に以上と高いため冷却に液体ヘリウムより価格が１
０分の！安い液体窒素（沸点７７に）が使用できる可能
性があり、また、合成法が単純で特性の再現性に優れる
という効果がある。These oxides are mixtures of multiple phases, one of which is La3Ba3Cu6014. +(L,
Er-RakhO et al., J, 5olid 5tate
Chew, 37, 151-156.1981), we investigated the temperature change in the resistivity of this oxide, which contains a perovskite type compound such as ) to 0.82 (composition indicated by 2 in Figure 2) l! It was found that superconductivity with Tc of 80 or more was exhibited in the Ii range. As an example, the case where X is 0.5 is shown in Figure 1.As shown in the first factor, this substance has Tc
These oxides have a superconductivity of 90%, and their Tc is as high as 80%, making them cheaper than liquid helium for cooling.
0 minutes! There is a possibility that cheap liquid nitrogen (boiling point 77) can be used, and the synthesis method is simple and the reproducibility of characteristics is excellent.
［実施例２］
Ｌｕ２（１３、ＢａＣ０３、ＣｕＯを試薬として（１−
ｘ）：３（ｌ−に）：５ｘのモル比で焼成用原料を秤量
、混合後、９００＠Ｃの温度において酸素中ないし空気
中で１２時間焼成してＬｕ−Ｂａ−Ｃｕ−０酸化物を得
た。これらの酸化物も実施例１に示した酸化物と同様、
複数の相からなる混合物であるが、これらの酸化物の抵
抗率の温度変化を調べたところ、Ｘが０．２９ （第２
図の３で示した組成）から０．５ｓ （第２図の４で示
した組成）の１！囲でＴｃが８０に以上の超伝導性を示
すことがわかった。[Example 2] Using Lu2 (13, BaC03, CuO as a reagent (1-
After weighing and mixing the raw materials for firing at a molar ratio of x):3(l-):5x, they were fired at a temperature of 900@C in oxygen or air for 12 hours to form Lu-Ba-Cu-0 oxide. I got it. These oxides are similar to the oxides shown in Example 1,
Although it is a mixture consisting of multiple phases, when we investigated the temperature change in resistivity of these oxides, we found that X was 0.29 (second
(composition shown as 3 in the figure) to 0.5s (composition shown as 4 in Fig. 2) 1! It was found that the superconductivity with Tc of 80 or higher was observed.
［実施例３］
Ｌｕ２Ｏ３、ＢａＣＯ３、ＣｕＯを試薬として（１−ｘ
）：２ｘ：２ｘのモル比で焼成用原料を秤量、混合後、
９００・Ｃの温度において酸素中ないし空気中で１２時
間焼成してＬｕ−Ｂａ−Ｃｕ−０酸化物を得た。これら
の酸化物も実施例１に示した酸化物と同様、複数の相か
らなる混合物であるが、これらの酸化物の抵抗率の温度
変化を調べたところ、Ｘが０．２５ （第２図の６で示
した組成）から０．８２ （第２図の６で示した組成）
のＩＩ ＩＩ ｔ’ Ｔｃが８０に以上の超伝導性を示
すことがわかった。[Example 3] Using Lu2O3, BaCO3, and CuO as reagents (1-x
): 2x: After weighing and mixing the raw materials for firing at a molar ratio of 2x,
A Lu-Ba-Cu-0 oxide was obtained by firing in oxygen or air at a temperature of 900.degree. C. for 12 hours. Like the oxide shown in Example 1, these oxides are mixtures consisting of multiple phases, but when we investigated the temperature change in resistivity of these oxides, we found that X was 0.25 (Fig. 2). (composition shown in 6 in Figure 2) to 0.82 (composition shown in 6 in Figure 2)
It was found that the II II t' Tc of 80% or higher exhibits superconductivity.
［実施例４］
Ｌｕ２Ｏ３、ＢａＣＯ３、ＣｕＯを試薬として第２図の
ｌと４．４と２．２と６．６と３．３と６．６とｌを結
んだ線で囲ま゛れる領域の組成をもつ焼成用原料を秤量
、混合後、９００°Ｃの温度において酸素中ないし空気
中て１２時間焼成して得た酸化物の抵抗率を調べたとこ
ろ、これらの酸化物もＴｃが８０に以上の超伝導性をも
つことがわかった。[Example 4] Using Lu2O3, BaCO3, and CuO as reagents, the area surrounded by the line connecting l, 4.4, 2.2, 6.6, 3.3, 6.6, and l in Fig. 2 was prepared. After weighing and mixing raw materials for firing having the same composition, we investigated the resistivity of the oxides obtained by firing them at a temperature of 900°C in oxygen or air for 12 hours, and found that these oxides also had a Tc of 80. It was found that it has superconductivity of
（発明の効果）
以上説明したようにＬｕ−８ａ−Ｃｕ・０酸化物は、Ｔ
ｃが８０に以上と高く、合成も容易で特性の再現性に優
れるため、超伝導材料として使用で寝る利点がある。(Effect of the invention) As explained above, Lu-8a-Cu.0 oxide has T
It has a high c of 80 or more, is easy to synthesize, and has excellent reproducibility of properties, so it has the advantage of being used as a superconducting material.
第１図は、Ｌｕ２Ｏ３：８ａＣＯ３：ＣｕＯ＝ ０．５
：ｌ： １（１４，３：２８．６：５７．１）の組成を
もつ焼成物の抵抗率の温度変化を示す図である。
第２図は、Ｌｕ２０３−ＢａＯ−ＣｕＯ３元系で超伝導
性を示す組成領域を示す図である。ここで、１．２．３
．４．５，６は、各々、Ｌｕ２Ｏ３：ＢａＯ：ＣｕＯ＝
２０：２０：６０、 ４．７：４２．９：５２．４．
１６．６：４９．６：３３．８．９．２：２７．５：８
３．３．４２．８：２Ｂ、６：２Ｂ、６．５．２：４７
．４：４７．４の組成を示す。
図面の浄書（内容に変更なし）
賀５１ 圀
Ｌα２θ。
峯２面Figure 1 shows Lu2O3:8aCO3:CuO=0.5
FIG. 2 is a diagram showing a temperature change in resistivity of a fired product having a composition of :l: 1 (14, 3: 28.6: 57.1). FIG. 2 is a diagram showing a composition region exhibiting superconductivity in the Lu203-BaO-CuO ternary system. Here, 1.2.3
．． 4.5 and 6 are respectively Lu2O3:BaO:CuO=
20:20:60, 4.7:42.9:52.4.
16.6:49.6:33.8.9.2:27.5:8
3.3.42.8:2B, 6:2B, 6.5.2:47
．． 4:47.4. Engraving of drawings (no changes in content) Ka51 Kuni Lα2θ. Mine 2nd side
Claims (5)
Ｏ＝（１−ｘ）：２ｘ：２からなる組成において、ｘが
０．３３から０．８２の範囲で規定される特許請求の範
囲第１項記載の超伝導性物質。(2) Among the above substances, Lu_2O_3:BaO:Cu
The superconducting material according to claim 1, wherein x is defined in the range of 0.33 to 0.82 in a composition consisting of O=(1-x):2x:2.
Ｏ＝（１−ｘ）：３（１−ｘ）：５ｘからなる組成にお
いて、ｘが０．２９から０．５８の範囲で規定される特
許請求の範囲第１項記載の超伝導性物質。(3) Among the above substances, Lu_2O_3:BaO:Cu
The superconducting material according to claim 1, wherein x is defined in the range of 0.29 to 0.58 in a composition consisting of O=(1-x):3(1-x):5x.
Ｏ＝（１−ｘ）：２ｘ：２ｘからなる組成において、ｘ
が０．２５から０．８２の範囲で規定される特許請求の
範囲第１項記載の超伝導性物質。(4) Among the above substances, Lu_2O_3:BaO:Cu
In the composition consisting of O=(1-x):2x:2x, x
The superconducting material according to claim 1, wherein the superconducting material is defined in the range of 0.25 to 0.82.
Ｏ系でＬｕ＿２Ｏ＿３：ＢａＯ：ＣｕＯ＝２０：２０：
６０、９．２：２７．５：６３．３、４．７：４２．９
：５２．４、５．２：４７．４：４７．４、１６．６：
４９．６：３３．８、４２．８：２８．６：２８．６で
示される組成を結んだ領域の中にある組成をもつ特許請
求の範囲第１項、第２項、第３項、第４項いずれか記載
の超伝導性物質。(5) Among the above substances, Lu_2O_3-BaO-Cu
In O system, Lu_2O_3:BaO:CuO=20:20:
60, 9.2:27.5:63.3, 4.7:42.9
:52.4, 5.2:47.4:47.4, 16.6:
49.6:33.8, 42.8:28.6:28.6 having a composition within the region connecting the compositions shown in Claims 1, 2, and 3, The superconducting substance according to any of item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057369A JPS63225527A (en) | 1987-03-12 | 1987-03-12 | Superconductive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057369A JPS63225527A (en) | 1987-03-12 | 1987-03-12 | Superconductive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63225527A true JPS63225527A (en) | 1988-09-20 |
Family
ID=13053674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62057369A Pending JPS63225527A (en) | 1987-03-12 | 1987-03-12 | Superconductive material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63225527A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230526A (en) * | 1987-03-18 | 1988-09-27 | Kazuo Fueki | Compound superconductor and its manufacturing method |
| JPS643059A (en) * | 1987-03-22 | 1989-01-06 | Sumitomo Electric Ind Ltd | Production of superconducting material |
| JPH01141819A (en) * | 1987-10-05 | 1989-06-02 | American Teleph & Telegr Co <Att> | Superconductive material and method for its manu |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02502903A (en) * | 1987-01-12 | 1990-09-13 | ユニヴァーシティ オヴ ヒューストン・ユニヴァーシティ パーク | Superconductivity in rectangular planar compound systems |
-
1987
- 1987-03-12 JP JP62057369A patent/JPS63225527A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02502903A (en) * | 1987-01-12 | 1990-09-13 | ユニヴァーシティ オヴ ヒューストン・ユニヴァーシティ パーク | Superconductivity in rectangular planar compound systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230526A (en) * | 1987-03-18 | 1988-09-27 | Kazuo Fueki | Compound superconductor and its manufacturing method |
| JPS643059A (en) * | 1987-03-22 | 1989-01-06 | Sumitomo Electric Ind Ltd | Production of superconducting material |
| JPH01141819A (en) * | 1987-10-05 | 1989-06-02 | American Teleph & Telegr Co <Att> | Superconductive material and method for its manu |
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