JPH01192759A - Superconducting ceramic - Google Patents
Superconducting ceramicInfo
- Publication number
- JPH01192759A JPH01192759A JP63015270A JP1527088A JPH01192759A JP H01192759 A JPH01192759 A JP H01192759A JP 63015270 A JP63015270 A JP 63015270A JP 1527088 A JP1527088 A JP 1527088A JP H01192759 A JPH01192759 A JP H01192759A
- Authority
- JP
- Japan
- Prior art keywords
- elements
- periodic table
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- reduced
- 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
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- 239000000919 ceramic Substances 0.000 title claims abstract description 8
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 5
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 5
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 4
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- AAOVKJBEBIDNHE-UHFFFAOYSA-N diazepam Chemical compound N=1CC(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 AAOVKJBEBIDNHE-UHFFFAOYSA-N 0.000 claims description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- 229940072690 valium Drugs 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 8
- 230000000737 periodic effect Effects 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005749 Copper compound Substances 0.000 description 2
- 229910000410 antimony oxide Inorganic materials 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 150000001880 copper compounds Chemical class 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 238000005303 weighing Methods 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
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
「発明の利用分野」
本発明は酸化物セラミック系超伝導材料に関する。 本
発明は新型の超伝導を呈する材料に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to oxide ceramic superconducting materials. The present invention relates to a new type of superconducting material.
「従来の利用分野Ｊ 従来、超電子材料は、水銀、鉛等の元素、ＮｂＮ。“Traditional field of use J Conventionally, superelectronic materials include elements such as mercury and lead, and NbN.
Ｎｂ＊Ｇｅ、 Ｎｂ３Ｇａ等の合金またはＮｂ５（Ａｌ
ｏ、ａＧｅｏ、ｚ）等の三元素化合物よりなる金属材料
が用いられている。しかしＣれらのＴｃ（超伝導臨界温
度）オンセットは２５Ｋまでであった。Alloys such as Nb*Ge, Nb3Ga or Nb5(Al
A metal material made of a ternary compound such as o, aGeo, z) is used. However, their Tc (superconducting critical temperature) onset was up to 25K.
他方、近年、セラミック系の超伝導材料が注目されてい
る。この材料は最初ＩＢＭのチューリッヒ研究所よりＢ
ａ−Ｌａ−Ｃｕ−０（バラクオ）系酸化物高温超伝導体
として報告され、さらにＬＳＣＯ（第二銅酸−ランタン
ーストロンチューム）として知られてきた。On the other hand, ceramic-based superconducting materials have attracted attention in recent years. This material was first obtained from IBM's Zurich laboratory.
It was reported as an a-La-Cu-0 (baraquo)-based oxide high-temperature superconductor, and further known as LSCO (cupric acid-lanthanum-strontium).
これらは（ＡＩ−Ｘ ＢＸ） ｙｃｕｏｚ、ｘ＝ｏ、０
１〜０．３ 、ｙ＝１．３〜２．２． ｚ＝２．０〜４
．５におけるＡ、Ｂとして、それぞれ１種類の元素を用
いるのみであるため、Ｔｃオンセントが３０Ｋ Ｌか得
られなかった。These are (AI-X BX) ycuoz, x=o, 0
1-0.3, y=1.3-2.2. z=2.0~4
．． Since only one type of element was used for each of A and B in Example 5, a Tc oncent of only 30 KL could not be obtained.
「従来の問題点」
しかし、これら酸化物セラミックスの超伝導の可能性は
Ｔｃも３０Ｋがその限界であった。``Conventional Problems'' However, the possibility of superconductivity in these oxide ceramics was limited to Tc of 30K.
このため、このＴｃｏ （電気抵抗が零または実質的に
零になる温度）をさらに高くし、望むべくは液体窒素温
度（７７Ｋ）またはそれ以上で動作せしめることが強く
求められていた。For this reason, there has been a strong demand to further increase this Tco (the temperature at which the electrical resistance becomes zero or substantially zero), and preferably to operate at liquid nitrogen temperature (77K) or higher.
「問題を解決すべき手段」
本発明は゛、ががる高温で超伝導を呈するべく・ＫＪｉ
Ｆ４型を構成すべき素材を探し求めた。その結果、Ｔｃ
オンセット（超伝導現象が一部にみいて観察され始める
温度）も５０〜１０７Ｋまで向上させ得ることが明らか
になった。"Means to Solve the Problem" The present invention aims to exhibit superconductivity at extremely high temperatures.
We searched for the materials that would make up the F4 model. As a result, Tc
It has become clear that the onset (temperature at which superconducting phenomena begin to be observed in some areas) can also be improved to 50 to 107K.
本発明の超伝導性セラミックスは（ＡＩ−、８に）ｙＣ
ｕｚＯｗ、ｘ−０，３〜１．ｙ−２，０〜４．０好まし
くは２．５〜３．５． ｚ−１，０〜４．０好ましくは
１．５〜３．５．ｗ＝４．０〜１Ｏ１０好ましくは６〜
８で一般的に示し得るものである。ＡはＡ＋＋Ａｔ＋
・・・Ａｎよりなりまた、ＡＩ、Ａｔ・・ＡｎはＢｉ（
ビスマス）、Ｓｂ（アンチモン）Ａａ（ヒ素）Ｐ（リン
）より選ばれた元素のうちの少なくとも２種類を用いて
いる。The superconducting ceramics of the present invention (AI-, 8) yC
uzOw, x-0, 3~1. y-2.0 to 4.0 preferably 2.5 to 3.5. z-1.0 to 4.0 preferably 1.5 to 3.5. w=4.0~1O10 preferably 6~
8 can be generally shown. A is A++At+
...An, and AI, At...An is Bi(
Bismuth), Sb (antimony), Aa (arsenic), and P (phosphorus).
マタＢ ！；！Ｂ＋、Ｂｇ ・・・ａｎよりなりそれ
らはＢａ（バリューム）、Ｓｒ（ストロスンチェーム）
、Ｃａ（カルシニーム） ＋Ｍｇ（マグネシューム）よ
り選ばれた元素のうち少なくとも２種類を用いている。Mata B! ;! Consisting of B+, Bg...an, they are Ba (valium) and Sr (strosenchaim)
, Ca (calcineum) + Mg (magnesium).
本発明は銅と酸素との混合の層構造とせしめ、これを１
分子内で１層またはそれを対称構造の２層構造とし、こ
の層の最外積電子の電子の軌道により超伝導を呈せしめ
得るモデルを前提としている。このため、新構造を前提
としている。The present invention creates a layered structure of a mixture of copper and oxygen, and
The premise is a model in which the molecule has one layer or a symmetrical two-layer structure, and superconductivity can be exhibited by the orbits of the outermost product electrons in this layer. Therefore, a new structure is assumed.
かかる構造においては、銅の４ケの原子より層構造とせ
しめ、この層をキャリアが移動しやすくするため、本発
明構造における（ＡＩ−Ｘ ＢＸ） ｙｃｕｚ。In such a structure, a layer structure is formed using four copper atoms, and in order to facilitate the movement of carriers through this layer, (AI-X BX) ycuz in the structure of the present invention.
鰻におけるＡ、Ｂの選ばれる元素が重要である。The elements A and B selected in eel are important.
特にＡの元素を旧（ビスマス）、Ｓｂ（アンチモン）。In particular, element A is old (bismuth) and Sb (antimony).
Ａｓ（ヒ素）、Ｐ（リン）の元素用周期律表ｖｂの族で
ある。本発明は、その元素のうちの少なくとも２種Ｉｆ
（（Ａｔ、Ａｔ・・・ Ａｎ）を用いている。It is in group Vb of the periodic table for elements, including As (arsenic) and P (phosphorus). The present invention provides at least two of the elements If
((At, At... An) is used.
さらに本発明はＢとして元素周期律表における■ａ族で
あるＢａ（バリューム）、Ｓｒ（ストロンチューム）、
Ｃａ（カルシニーム）、Ｍｇ（マグネシューム）より選
ばれた元素のうちのす（なくとも２種類（Ｂ＋、Ｂｇ
・・・ Ｂ、 ）を用いている。Furthermore, the present invention uses Ba (valume), Sr (strontium), which are group ■a in the periodic table of elements, as B.
Some of the elements selected from Ca (calcineum) and Mg (magnesium) (at least two types (B+, Bg)
... B, ) is used.
かくすることにより、Ａ、Ｂに対し、単に１つのみの元
素を用いるこれまでの構造に比べて、多結晶を呈する１
つの結晶粒を大きくでき、ひいてはその多結晶粒界での
バリアをより消失させ得る構成とけしめた。その結果、
Ｔｃオンセットをさらに高くさせ得る。そしてその理想
は単結晶構造である。By doing this, compared to the conventional structure in which only one element is used for A and B, 1 exhibits a polycrystalline structure.
The authors concluded that the structure was designed to make it possible to enlarge the polycrystalline grains, thereby further eliminating the barrier at the polycrystalline grain boundaries. the result,
Tc onset can be made even higher. The ideal is a single crystal structure.
本発明は出発材料の酸化物または炭酸化物を混合し、−
度加圧して、出発材料よ酸化物または炭酸化物により（
ＡＩ−Ｘ ａｘ） ｙｃｕｚＯ−型の分子を作り得る。The present invention involves mixing the starting oxides or carbonates, -
Under high pressure, the starting materials are mixed with oxides or carbonates (
AI-X ax) ycuzO-type molecules can be made.
さらにこれを微粉末化し、再び加圧してタブレット化し
、本焼成を有せしめている。Further, this is pulverized, pressed again to form a tablet, and subjected to main firing.
「作用」
本発明の新型構造のセラミック超伝導素材はきわめて簡
単に作ることができる。特にこれらはその出発材料とし
て３Ｎまたは４Ｎの純度の酸化物または炭素化物を用い
、これをボールミルを用いて微粉末に粉砕し、混合する
。すると、化学量論的に（ＡＩ−ｘ ａｘ） ｙｃｕｚ
Ｏ−におけるＡ＝＾ｔ＋Ａｚ＋ ’ ・・Ａａ ＋Ｂ−
８＋＋Ｂｇ＋ ＊ ＨＨＢａおよびＬＶ＋ＬＨのそれぞ
−れの値およびＡ１，Ａ２ ・・・ ＾７およびＢ１
，Ｂ、 ・・・Ｂ７のそれぞれを任意に変更、制御す
ることができる。"Operation" The ceramic superconducting material with the new structure of the present invention can be produced very easily. In particular, these use 3N or 4N purity oxide or carbonide as the starting material, which is ground into a fine powder using a ball mill and mixed. Then, stoichiometrically (AI-x ax) ycuz
A at O-=^t+Az+'...Aa +B-
8++Bg+ * Each value of HHBa and LV+LH and A1, A2 ... ^7 and B1
, B, . . . B7 can be arbitrarily changed and controlled.
本発明においては、かかる超伝導材料を作るのに特に高
価な設備を用いなくともよいという他の特徴も有する。Another feature of the present invention is that it does not require the use of particularly expensive equipment to produce such a superconducting material.
以下に実施例に従い本発明を記す。The present invention will be described below according to Examples.
ｆ実施例」
本発明の実施例として、Ａ＝＾１＋Ａよとした。そして
ＡｔとしてＢ１５Ａｔ としてＳｂ、 Ｂ＝８＋＋Ｂｇ
とした。f Example” As an example of the present invention, A=^1+A. And as At, B15At as Sb, B=8++Bg
And so.
そしてＢ、としてＳｒ、 ＢｚとしてＣａを用いた。Then, Sr was used as B, and Ca was used as Bz.
出発材料はＢ１およびｓｂ化合物として酸化ビスマス（
ＢｉｚＯｓ）、酸化アンチモン（ＳｂｔＯｓ） 、 Ｓ
ｒ化合物としてＳｒＣＯ３、Ｃａ化合物としてＣａＣ０
，、銅化合物としてＣｕＯを用いた。これらは■高純度
化学研究所より入手し、純度は９９．９５％またはそれ
以上の微粉末を用い、ｘ ＝０．６１ＣＡ：Ｂ−１：２
） ｙ −３，０，ｚ＝３＋Ｗ−６〜８となるべく選ん
だ。またＡ１，ＡｔであるＢｉとｓｂとの比を１：１，
２：１，５：１例えば１：１さらにａｔ、ＢｚであるＳ
ｒおよびＣａをｌ：ｌ とした。するとＢｆｏ、 ５Ｓ
ｂｏ、 ５ＳｒＩＣａＩＣｕ３０４〜１０好ましくはＢ
ｉｏ、 ５Ｓｂｏ、 ５ＳｒＩＣａｌＣｕｌＯ７〜、と
することができた。The starting material is bismuth oxide (
BizOs), antimony oxide (SbtOs), S
SrCO3 as r compound, CaC0 as Ca compound
, CuO was used as the copper compound. These were obtained from the High Purity Chemical Research Institute, using fine powder with a purity of 99.95% or higher, x = 0.61CA:B-1:2
) y-3,0,z=3+W-6~8. Also, the ratio of Bi and sb, which is A1, At, is 1:1,
2:1, 5:1 for example 1:1 and S which is at, Bz
r and Ca were set as l:l. Then Bfo, 5S
bo, 5SrICaICu304-10 preferably B
io, 5Sbo, 5SrICalCulO7~.
これらを十分乳鉢で混合しカプセルに封入し、３ ｋｇ
／ ｃｉの荷重を加えてタブレ・ント化（太きく１０
価φＸ３ｍｍ）した。さらに酸化性雰囲気、例えば大気
中で５００〜１０００’Ｃ５例えば８００°Ｃで８時間
加熱酸化をした。この行程を仮焼成とした。Mix these thoroughly in a mortar and seal in capsules, weighing 3 kg.
Add a load of /ci to make it into a tablet (thick 10
(value φX3mm). Further, heating oxidation was performed in an oxidizing atmosphere, for example, air, at 500 to 1000°C, for example, 800°C for 8 hours. This step was called pre-firing.
次にこれを粉砕し、乳鉢で混合した。そしてその粉末の
平均粉半径が１０μｍ以下の大きさとなるようにした。This was then ground and mixed in a mortar. The powder was made to have an average powder radius of 10 μm or less.
さらにこれをカプセルに封入し５０ｋｇ／ｃ１ａの圧力
でタブレットに加圧して成型した。この加圧と同時に３
００〜８００°Ｃに加熱してホットプレス方式とした。Further, this was encapsulated in a capsule and pressed to form a tablet at a pressure of 50 kg/c1a. At the same time as this pressurization, 3
It was heated to 00 to 800°C to use a hot press method.
次に５００〜１０００°Ｃ１例えば９００°Ｃの酸化物
雰囲気、例えば大気中で酸化して、本焼成を１０〜５０
時間、例えば１５時間行った。Next, oxidation is performed at 500 to 1000°C1, for example, 900°C in an oxide atmosphere, such as air, and the main firing is performed for 10 to 50°C.
For example, 15 hours.
このタブレットはベルブスカイト構造が主として観察さ
れるが、新型構造も同時に観察された。This tablet mainly has a vervskite structure, but a new structure was also observed at the same time.
次にこの試料を酸素を少な（させた０、−Ａｒ中で加熱
（６００〜１１００°Ｃ，３〜３０時間、例えば３００
°Ｃｌ２Ｏ時間）して、還元させた。This sample is then heated (600-1100°C, 3-30 hours, e.g.
°Cl2O hours) for reduction.
この試料を用いて固有抵抗と温度との関係を調べた。す
ると最高温度が得られたものとしてのＴｃオンセットと
して１４７に、ＴｃＯとして１２５Ｋを観察することが
できた。Using this sample, the relationship between resistivity and temperature was investigated. Then, it was possible to observe a Tc onset of 147 and a TcO of 125 K as the maximum temperature obtained.
「実施例２」
この実施例として、Ａ１としてＢｉ１＾２としてｓｂを
ｎ、＊ｚ ＝１：１でその酸化物を混合した。Ｂ、とし
てＢａ、 ＢｚとしてＭｓを用いＢ、：Ｂ２＝１：１
とした。出発材料は酸化ビスマスおよび酸化アンチモン
を、ＢａとしてＢａＣＯ３、ＭｇとしてＭｇｚＯｓ 、
また銅化合物としてＣｕＯを用いた。その他は実施例１
と同様である。"Example 2" In this example, sb was n as Bi1^2 as A1, and the oxides thereof were mixed at *z = 1:1. Using Ba as B and Ms as Bz, B:B2=1:1
And so. The starting materials are bismuth oxide and antimony oxide, BaCO3 as Ba, MgzOs as Mg,
Further, CuO was used as the copper compound. Others are Example 1
It is similar to
Ｔｃオンセットとして１３４に、 Ｔｃｏとして１０４
Ｋを得ることができた。134 as Tc onset, 104 as Tco
I was able to get K.
「効果」
本発明により、これまでまったく不可能とされていたセ
ラミックス超電導体を作ることができるようになった。"Effects" The present invention has made it possible to create ceramic superconductors, which was previously considered impossible.
本発明において仮焼成をした後に微粉末化する工程によ
り、初期状態でのそれぞれの出発材料の化合物を到達材
料、即ち（八＋−ｘＢｘ）ｙｃｕｚＯ−で示される材料
を含む化合物とするものである。In the present invention, the compound of each starting material in the initial state is converted into a final material, that is, a compound containing a material represented by (8+-xBx)ycuzO-, by the step of pre-calcining and then pulverization. .
さらにこの到達材料の化合物における分子構造内で銅の
層構造をよりさせやすくするため、原子周期律表におけ
るＩ［ａ、Ｖｂの元素を複数個混合させた。かくして最
終完成化合物中に、ボイド等の空穴の存在をより除去す
ることができ、ひいてはＴｃオンセット、Ｔｃｏをより
高温化できるものと酸化物が構造において層構造を有し
、その層構造る。Furthermore, in order to make it easier to form a copper layer structure within the molecular structure of the compound of this target material, a plurality of elements I[a and Vb in the periodic table of atoms were mixed. In this way, the presence of voids such as voids can be further removed in the final completed compound, and as a result, the Tc onset, the Tco that can be heated to a higher temperature, and the oxide have a layered structure, and the layered structure .
本発明の実施例は、タブレットにしたものである。しか
しタブレットにするのではなく、仮焼成または本焼成の
後の粉末を溶媒にとかし、基板等にその溶液をコーティ
ングをし、これを酸化性界スとすることも可能である。An embodiment of the present invention is made into a tablet. However, instead of making it into a tablet, it is also possible to dissolve the pre-calcined or main-calcined powder in a solvent, coat the solution on a substrate, etc., and use this as an oxidizing interface.
イＡ
本発明により超゛電導体を容易に低価格で作ることがで
きるようになった。A: The present invention has made it possible to easily produce superconductors at low cost.
Claims (1)
３〜１，ｙ＝２．０〜４．０好ましくは２．５〜３．５
，Ｚ＝１．０〜４．０好ましくは１．５〜３．５，ｗ＝
４．０〜１０．０好ましくは６〜８を有し、ＡはＡ＿１
＋Ａ＿２・・Ａｎよりなり、またＡ＿１，Ａ＿２・・・
ＡｎはＢｉ（ビスマス），Ｓｂ（アンチモン），Ａｓ（
ヒ素）、Ｐ（リン）より選ばれた少なくとも２種類の元
素よりなり、ＢはＢ＿１＋Ｂ＿２・・・Ｂｎよりなりま
た、Ｂ＿１，Ｂ＿２・・・ＢｎはＢａ（バリューム），
Ｓｒ（ストロンチューム），Ｃａ（カルシューム），Ｍ
ｇ（マグネシューム）より選ばれた少なくとも２種類の
材料の元素よりなる超伝導性を有するセラミックス材料
であることを特徴とする超伝導セラミックス。(A_1_−_xBx)_yCu_zO_w x=0.
3-1, y=2.0-4.0 preferably 2.5-3.5
, Z=1.0-4.0 preferably 1.5-3.5, w=
4.0-10.0 preferably 6-8, A is A_1
+A_2...An, and A_1, A_2...
An is Bi (bismuth), Sb (antimony), As (
B consists of at least two elements selected from arsenic) and P (phosphorus), B consists of B_1+B_2...Bn, and B_1, B_2...Bn consists of Ba (valium),
Sr (strontium), Ca (calcium), M
1. A superconducting ceramic, characterized in that it is a ceramic material having superconductivity and comprising at least two types of material elements selected from g (magnesium).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63015270A JPH01192759A (en) | 1988-01-26 | 1988-01-26 | Superconducting ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63015270A JPH01192759A (en) | 1988-01-26 | 1988-01-26 | Superconducting ceramic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01192759A true JPH01192759A (en) | 1989-08-02 |
Family
ID=11884170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63015270A Pending JPH01192759A (en) | 1988-01-26 | 1988-01-26 | Superconducting ceramic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01192759A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01188456A (en) * | 1988-01-20 | 1989-07-27 | Natl Res Inst For Metals | Oxide high temperature superconductor |
-
1988
- 1988-01-26 JP JP63015270A patent/JPH01192759A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01188456A (en) * | 1988-01-20 | 1989-07-27 | Natl Res Inst For Metals | Oxide high temperature superconductor |
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