JPS63230521A - Superconductor of barium yttrium copper compound (ba4y2 cu7o14) and production thereof - Google Patents
Superconductor of barium yttrium copper compound (ba4y2 cu7o14) and production thereofInfo
- Publication number
- JPS63230521A JPS63230521A JP62062183A JP6218387A JPS63230521A JP S63230521 A JPS63230521 A JP S63230521A JP 62062183 A JP62062183 A JP 62062183A JP 6218387 A JP6218387 A JP 6218387A JP S63230521 A JPS63230521 A JP S63230521A
- Authority
- JP
- Japan
- Prior art keywords
- heated
- superconductor
- air
- copper compound
- production
- 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
- 239000005749 Copper compound Substances 0.000 title claims description 5
- IQAKAOAPBMJSGJ-UHFFFAOYSA-N [Cu].[Y].[Ba] Chemical compound [Cu].[Y].[Ba] IQAKAOAPBMJSGJ-UHFFFAOYSA-N 0.000 title claims description 5
- 239000002887 superconductor Substances 0.000 title abstract description 6
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 9
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims abstract description 7
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000005751 Copper oxide Substances 0.000 abstract description 5
- 229910000431 copper oxide Inorganic materials 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052788 barium Inorganic materials 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 229910052727 yttrium Inorganic materials 0.000 abstract description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Abstract
Description
【発明の詳細な説明】
本発明はバリウム・イツトリウム・銅化合物超伝導体（
Ｂａ４Ｙ２Ｃｕ７０１４）及びその製造法に関するもの
である。[Detailed Description of the Invention] The present invention provides a barium-yttrium-copper compound superconductor (
(Ba4Y2Cu7014) and its manufacturing method.
この化合物と組成が類似した混合物については。For mixtures similar in composition to this compound.
９０に以上の温度で超伝導性が認められる事は。Superconductivity is observed at temperatures above 90°C.
新聞報道によって、知られている。しかし２個々の化合
物の化学組成・格子定数等は未知である。It is known from newspaper reports. However, the chemical composition, lattice constant, etc. of the two individual compounds are unknown.
そのため超伝導性物質の作成は試行錯誤的方法によって
いる。Therefore, creating superconducting materials relies on a trial-and-error method.
発明の目的
本発明は前記従来法の欠点を解消せんとするものであり
、その目的は超伝導性物質を決定して。OBJECTS OF THE INVENTION The present invention seeks to overcome the drawbacks of the above-mentioned conventional methods, and its purpose is to determine superconducting materials.
高純度の超伝導体を製造するにある。To produce high-purity superconductors.
発明の構成 本発明者は前記の目的を達成すべく研究の結果。Composition of the invention The present inventor conducted research to achieve the above object.
所定量比の酸化銅（ＣｕＯあるいはＣｕ２０）、酸化イ
ツトリウム（Ｙ２Ｏ２）と炭酸バリウム（ＢａＣＯ３）
を混合し、これを空気中にて８００〜９５０℃に加熱す
ると、新規な化合物であるバリウム・イツトリウム・銅
化合物（Ｂａ４Ｙ２Ｃｕ７０１４ ）が得られることを
究明し得た。この知見に基づいて９本発明を完成した。Copper oxide (CuO or Cu20), yttrium oxide (Y2O2) and barium carbonate (BaCO3) in a predetermined ratio
It has been found that a new compound, barium-yttrium-copper compound (Ba4Y2Cu7014), can be obtained by mixing these and heating the mixture to 800-950°C in air. Based on this knowledge, the present invention was completed.
本発明の要旨は 炭酸バリウム、酸化イツトリウム、酸化銅を。The gist of the invention is barium carbonate, yttrium oxide, copper oxide.
Ｂａ、 Ｙ、 Ｃｕの原子比が４：２ニアになる様に混
合し、これを空気中で８００〜９５０℃で加熱すると。Ba, Y, and Cu are mixed so that the atomic ratio is near 4:2, and this is heated in air at 800 to 950°C.
新規化合物が得られる。という知見と、この化合物の製
造法に関するものである。A new compound is obtained. This is related to this knowledge and the method for producing this compound.
所定の比に混合した酸化物を空気中で加熱する場合、数
度に渡って繰り返し粉末の混合をすることが好ましい。When heating oxides mixed in a predetermined ratio in air, it is preferable to repeatedly mix the powders several times.
また得られた粉末を室温にて圧粉体に整形し、これを所
定の温度で加熱することが好ましい。この際、加熱の温
度は８５０〜９２０℃が好ましい。加熱時間は１０〜２
４時間が良い。Further, it is preferable that the obtained powder is shaped into a green compact at room temperature, and then heated at a predetermined temperature. At this time, the heating temperature is preferably 850 to 920°C. Heating time is 10-2
4 hours is good.
加熱温度が９２０℃以上では本目的以外の化合物が多量
に形成し始めるので好ましくない。８５０℃以下では反
応が十分に進行しない。If the heating temperature is 920° C. or higher, a large amount of compounds other than the intended purpose will begin to form, which is not preferable. The reaction does not proceed sufficiently below 850°C.
空気中にて加熱して得られた黒色の物質を電子線マイク
ロアナライザで分析すると、 Ｙ２Ｏ３＝１７．５６
。When the black substance obtained by heating in air is analyzed with an electron beam microanalyzer, Y2O3 = 17.56
.
Ｃｕ０＝３９．０１． Ｂａ０＝４３．３０．合計＝
９９．８７ （重量パーセント表示）であり、化学式は
Ｂａ４Ｙ２Ｃｕ７０１４で表現できる。Cu0=39.01. Ba0=43.30. Total =
99.87 (in weight percent), and the chemical formula can be expressed as Ba4Y2Cu7014.
この物質のＣｕＫ、線によるＸ線粉末回折データは次の
通りである。The X-ray powder diffraction data of this substance using CuK rays are as follows.
００１ ７．５４ １１．７２ ２
００２ １５．１４ ５．８４７ ２１
００ ２２．８４ ３．８９０ １０
０１０ ２３．２１ ３．８２９ ３
１０２ ２７．６０ ３．２２９１
５０１２ ２７．８４ ３．２０１８
５１０３ ３２．５５ ２．７４８４
６３０１３ ３２．８１ ２．７２８０
１００１１２ ３６．３４ ２．４７００
４１０４ ３８．５３ ２．３３４
５ １００１４ ３８．７４ ２．３２２
４ ７１１３ ４０．３４ ２．２３３
９ １５２００ ４６．７１ １．９４
３０ １５０２０ ４７．５０ １．９
１２５ ８１１５ ５１．４８ １．
７７３６ ３２１３ ５８．２２ １
．５８２３ ２１１２３ ５８．７２
１．５７１０ １０２１４ ６２．２０
１．４９１２ ３この回折データは単位格子の対
称性が斜方晶系で格子定数が、 ａ ＝ ３．８８５７
人ｂ ＝ ３．８２６７Ａ
ｃ ＝ １１．６８１Ａ
で指数づけできる。001 7.54 11.72 2
002 15.14 5.847 21
00 22.84 3.890 10
010 23.21 3.829 3
102 27.60 3.2291
5012 27.84 3.2018
5103 32.55 2.7484
63013 32.81 2.7280
100112 36.34 2.4700
4104 38.53 2.334
5 10014 38.74 2.322
4 7113 40.34 2.233
9 15200 46.71 1.94
30 15020 47.50 1.9
125 8115 51.48 1.
7736 3213 58.22 1
．． 5823 21123 58.72
1.5710 10214 62.20
1.4912 3 This diffraction data shows that the symmetry of the unit cell is orthorhombic and the lattice constant is a = 3.8857.
It can be indexed by person b = 3.8267A c = 11.681A.
以上の様な化学組成と単位格子を持つ結晶は従来知られ
ておらず、これは新規な化合物と判断される。A crystal with the chemical composition and unit cell described above has not been previously known, and this is considered to be a novel compound.
本物質の電気抵抗を液体チッ素温度から室温まで測定す
ると、室温では数ｍΩ罰であり、超伝導性は１０３にで
開始し、８５にでは超伝導体となる。When the electrical resistance of this material is measured from the temperature of liquid nitrogen to room temperature, it is several milliohms at room temperature, and superconductivity starts at 103, and becomes a superconductor at 85.
実施例 アルミナ乳鉢中で、酸化イツトリウム２．２５８ｇ。Example 2.258 g of yttrium oxide in an alumina mortar.
炭酸バリウム７．８９３ｇ、−酸化銅（Ｃｕ２０）５．
００８ ｇ。7.893 g of barium carbonate, -copper oxide (Cu20)5.
008 g.
を混合させた。この際アルコールを添加して、混合物の
均一性を高めた。この混合物を白金ルツボに入れて、空
気中にて９００℃に１時間加熱した。were mixed. Alcohol was added at this time to improve the homogeneity of the mixture. This mixture was placed in a platinum crucible and heated to 900° C. for 1 hour in air.
得られた物質を再び混合し、また１時間加熱した。The resulting materials were mixed again and heated for another hour.
これを２回繰り返した。その後、この粉末を圧粉体に整
形し、９００℃にて１２時間加熱し続けた。This was repeated twice. Thereafter, this powder was shaped into a compact and continued to be heated at 900° C. for 12 hours.
得られた物質は黒色のバリウム・イツトリウム−銅化合
物（Ｂａ４Ｙ２Ｃｕ７０１４）であった。Ｘ線粉末回折
データや光学的観察では、微量の不純物物質が認められ
るが、高純度な単−相が得られたと認識された。The obtained substance was a black barium-yttrium-copper compound (Ba4Y2Cu7014). Although trace amounts of impurity substances were observed in X-ray powder diffraction data and optical observation, it was recognized that a highly pure single phase was obtained.
発明の効果
本発明の方法によると、高純度な超伝導体が得られ、電
子材料・センサー材料等の機能性材料としての有効性が
期待される。Effects of the Invention According to the method of the present invention, a highly pure superconductor can be obtained and is expected to be effective as a functional material for electronic materials, sensor materials, and the like.
特許出願人 科学技術庁無機材質研究所長ｊ・・″ハ瀬
高信組、。Patent applicant: Director of the Institute of Inorganic Materials, Science and Technology Agency, Takanobu Hase.
１１、：１．７゜11,: 1.7°
Claims (1)
酸バリウムを所定の比率に混合し、これを、空気中にて
、８００〜９５０℃の温度範囲で加熱することを特徴と
する、バリウム・イットリウム・銅化合物（Ｂａ＿４Ｙ
＿２Ｃｕ＿７Ｏ＿１＿４）の製造法と新規化合物として
のＢａ＿４Ｙ＿２Ｃｕ＿７Ｏ＿１＿４化合物。A barium-yttrium-copper compound (CuO or Cu_2O), yttrium oxide, and barium carbonate are mixed in a predetermined ratio and heated in air at a temperature range of 800 to 950°C. Ba_4Y
_2Cu_7O_1_4) and Ba_4Y_2Cu_7O_1_4 compound as a new compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62062183A JPS63230521A (en) | 1987-03-17 | 1987-03-17 | Superconductor of barium yttrium copper compound (ba4y2 cu7o14) and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62062183A JPS63230521A (en) | 1987-03-17 | 1987-03-17 | Superconductor of barium yttrium copper compound (ba4y2 cu7o14) and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63230521A true JPS63230521A (en) | 1988-09-27 |
Family
ID=13192764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62062183A Pending JPS63230521A (en) | 1987-03-17 | 1987-03-17 | Superconductor of barium yttrium copper compound (ba4y2 cu7o14) and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63230521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109214A (en) * | 1989-08-02 | 1991-05-09 | Jeffrey L Tallon | Oxide material for showing superconductivity and method of its preparation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230565A (en) * | 1987-03-11 | 1988-09-27 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Superconductive substance |
-
1987
- 1987-03-17 JP JP62062183A patent/JPS63230521A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230565A (en) * | 1987-03-11 | 1988-09-27 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | Superconductive substance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109214A (en) * | 1989-08-02 | 1991-05-09 | Jeffrey L Tallon | Oxide material for showing superconductivity and method of its preparation |
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