JP4794145B2 - RE−Ba−Cu−O酸化物超電導体の作製方法 - Google Patents
RE−Ba−Cu−O酸化物超電導体の作製方法 Download PDFInfo
- Publication number
- JP4794145B2 JP4794145B2 JP2004217594A JP2004217594A JP4794145B2 JP 4794145 B2 JP4794145 B2 JP 4794145B2 JP 2004217594 A JP2004217594 A JP 2004217594A JP 2004217594 A JP2004217594 A JP 2004217594A JP 4794145 B2 JP4794145 B2 JP 4794145B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid phase
- compound
- superconducting
- bao
- phase
- 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.)
- Expired - Fee Related
Links
- 239000002887 superconductor Substances 0.000 title claims abstract description 31
- 229910002480 Cu-O Inorganic materials 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000007791 liquid phase Substances 0.000 claims abstract description 38
- 150000001875 compounds Chemical class 0.000 claims abstract description 37
- 239000013078 crystal Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 26
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 239000007858 starting material Substances 0.000 claims abstract description 5
- 239000012071 phase Substances 0.000 claims description 28
- 239000002994 raw material Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 24
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 3
- 238000010583 slow cooling Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 10
- 230000008018 melting Effects 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 15
- 239000001301 oxygen Substances 0.000 description 15
- 229910052760 oxygen Inorganic materials 0.000 description 15
- 239000000843 powder Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 230000007704 transition Effects 0.000 description 6
- 239000000155 melt Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- 241000954177 Bangana ariza Species 0.000 description 3
- 241000238366 Cephalopoda Species 0.000 description 3
- 239000013590 bulk material Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical compound CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001422 barium ion Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000012769 bulk production Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- C04B35/4504—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides containing rare earth oxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/653—Processes involving a melting step
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B28/00—Production of homogeneous polycrystalline material with defined structure
- C30B28/04—Production of homogeneous polycrystalline material with defined structure from liquids
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/22—Complex oxides
-
- 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
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3215—Barium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
- C04B2235/6584—Oxygen containing atmosphere, e.g. with changing oxygen pressures at an oxygen percentage below that of air
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
Description
RE−Ba−O化合物 + 液相1 → RE211 + 液相2 → RE123
の反応に従い、超電導結晶が成長することを見いだした。
RE−Ba−O化合物 + 液相1 → RE211 + 液相2 → RE123
の反応に従い、RE−Ba−Cu−O酸化物超電導体の結晶が成長する。この点が、本発明の特徴である。
希土類酸化物及びBaO2からなる原料粉末を希土類元素:Baのモル比が2:1(又は4:3)になるように秤量して混合し、この混合粉末を、例えば、空気中で、900〜1100℃で24時間熱処理した後、再び粉砕混合することによって、RE2BaO4又はRE4Ba3O9化合物を作製する。
例えば、BaO2及びCuOからなる原料粉末をBa:Cuのモル比が1.5:3.4になるように秤量して混合し、この混合粉末を、例えば、空気中で、950℃で24時間熱処理した後、再び粉砕混合することによって、Ba−Cu−O液相原料を作製する。
RE−Ba−O化合物とBa−Cu−O液相原料を平均組成がREBa2Cu3O7-d(RE123)+(10〜50モル%)RE2BaCuO5(RE211)+(0〜10モル%)BaO2となるように混合し、一軸成型及びCIP成型により、前駆体バルク成型体を作製する。
上記、成型体を不活性ガス中あるいは不活性ガスと酸素の混合気体中で加熱を行い、1000〜1100℃程度でBa−Cu−O液相原料を溶解させて、RE−Ba−O化合物と反応させる。この際、下記反応式に従い、RE211(針状結晶)と液相が生成する。
その後、必要に応じて、種結晶を部分溶融材料上に配置した後、酸化性雰囲気下において、RE123の成長温度以下で徐冷を行い、RE123結晶を成長させる。
本発明によれば、結晶成長の低温短時間化、残留酸素の低減と基板材料との反応低減による特性向上、及び、超電導相の微細でかつ均一な分散が可能となり、大型で高性能な超電導バルク体を作製することができる。
RE123及びRE211からなる原料を用いてバルク作製を行った場合、残留酸素により多核生成や固溶体生成に起因する特性劣化や超電導転移温度の低下や不均一分布を引き起こす可能性がある。また、高温かつ長時間の溶融により、溶融物と基板材との反応が生じ、成長した超電導結晶の特性を劣化させることがある。
Gd2O3及びBaO2からなる原料粉末をGd:Baのモル比が2:1になるように秤量して混合し、この混合粉末を成型後、空気中で、950℃で24時間熱処理した後、再び粉砕混合することによって、Gd2BaO4粉末を作製した。
(Gd,Dy)2BaO4粉末を直径40mmの金型を用い、厚さ10mmに一軸成型した。この際、成型密度が相体密度の50%以下となるように圧力調整を行った。別途、Ba:Cuのモル比が1.6:3.5になるように秤量・混合・熱処理したBa−Cu−O液相原料を、直径40mmの金型を用い一軸成型した。
Ho2O3及びBaO2からなる原料粉末をHo:Baのモル比が4:3になるように秤量して混合し、この混合粉末を成型後、空気中で、950℃で24時間熱処理した後、再び粉砕混合することによって、Ho4Ba3O9粉末を作製した。
Gd123及びGd211からなる原料粉末をGd:Ba:Cuのモル比が1.8:2.4:3.4になるように秤量・混合し、直径60mmの金型を用いて一軸成型及びCIP成型を施して、厚さ約20mmに成型した後、電気炉に入れ溶融成長を行った。この際、白金を0.5質量%、銀を20質量%添加した。
Claims (4)
- RE 2 BaO 4 又はRE 4 Ba 3 O 9 であるRE−Ba−O化合物(REは希土類元素のうちの1種又は2種以上)とBa−Cu−O液相原料を出発原料として両者を接触させた状態で、加熱により前記Ba−Cu―O液相原料を溶融して、RE−Ba−O化合物の微細粒子で形成された骨格構造体に、Ba−Cu−O液相原料を浸透させ、その後、徐冷することで結晶成長させることを特徴とするRE−Ba−Cu−O酸化物超電導体の作製方法。
- 前記RE−Ba−O化合物とBa−Cu−O液相原料からなる組成物の平均組成が、RE:Ba:Cu=X:Y:Z(1.1≦X≦2.0、2.2≦Y≦2.6、3.1≦Z≦3.6)であることを特徴とする請求項1に記載のRE−Ba−Cu−O酸化物超電導体の作製方法。
- 前記RE−Ba−O化合物及び/又はBa−Cu−O液相原料が、白金(Pt)又はCeO2を2質量%以下含有することを特徴とする請求項1又は2に記載のRE−Ba−Cu−O酸化物超電導体の作製方法。
- 前記RE−Ba−O化合物及び/又はBa−Cu−O液相原料が、更に、分散相として銀(Ag)を30質量%以下含有することを特徴とする請求項1〜3のいずれか1項に記載のRE−Ba−Cu−O酸化物超電導体の作製方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004217594A JP4794145B2 (ja) | 2004-07-26 | 2004-07-26 | RE−Ba−Cu−O酸化物超電導体の作製方法 |
CNB2005800249691A CN100538918C (zh) | 2004-07-26 | 2005-07-12 | RE-Ba-Cu-O系氧化物超导体的制作方法 |
EP05762065A EP1770190B1 (en) | 2004-07-26 | 2005-07-12 | METHOD OF FABRICATING RE-Ba-Cu-O SUPERCONDUCTOR |
AT05762065T ATE545720T1 (de) | 2004-07-26 | 2005-07-12 | Verfahren zur herstellung eines re-ba-cu-o supraleiters |
PCT/JP2005/013213 WO2006011389A1 (ja) | 2004-07-26 | 2005-07-12 | RE-Ba-Cu-O系酸化物超電導体の作製方法 |
US10/580,368 US20070128735A1 (en) | 2004-07-26 | 2005-07-12 | Method of fabrication of re-ba-cu-o-based oxide superconductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004217594A JP4794145B2 (ja) | 2004-07-26 | 2004-07-26 | RE−Ba−Cu−O酸化物超電導体の作製方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006036574A JP2006036574A (ja) | 2006-02-09 |
JP4794145B2 true JP4794145B2 (ja) | 2011-10-19 |
Family
ID=35786139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004217594A Expired - Fee Related JP4794145B2 (ja) | 2004-07-26 | 2004-07-26 | RE−Ba−Cu−O酸化物超電導体の作製方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070128735A1 (ja) |
EP (1) | EP1770190B1 (ja) |
JP (1) | JP4794145B2 (ja) |
CN (1) | CN100538918C (ja) |
AT (1) | ATE545720T1 (ja) |
WO (1) | WO2006011389A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4925639B2 (ja) * | 2005-03-31 | 2012-05-09 | 財団法人国際超電導産業技術研究センター | Re123系酸化物超電導体とその製造方法 |
CN101665980B (zh) * | 2009-09-25 | 2012-01-11 | 陕西师范大学 | 用熔渗法制备单畴钆钡铜氧超导块材的方法 |
CN101665981B (zh) * | 2009-09-25 | 2012-01-11 | 陕西师范大学 | 单畴钆钡铜氧超导块材的制备方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4857504A (en) * | 1987-08-25 | 1989-08-15 | University Of Arkansas | Melt-produced high temperature rare earth barium copper oxide superconductor and processes for making same |
EP0387525B1 (de) * | 1989-03-15 | 1993-08-11 | Asea Brown Boveri Ag | Verfahren zur Herstellung einer kristallorientierten Oberflächenschicht aus einem keramischen Hochtemperatur-Supraleiter |
US5300483A (en) * | 1992-01-16 | 1994-04-05 | Sinha Shome N | Process for preparing shaped superconductor materials via nonequilibrium precursors |
JP3725197B2 (ja) * | 1995-03-24 | 2005-12-07 | 石川島播磨重工業株式会社 | 超電導酸化物結晶の製造方法 |
JPH09255334A (ja) * | 1996-03-22 | 1997-09-30 | International Superconductivity Technology Center | バルク酸化物超電導体の作製方法 |
JPH1121126A (ja) * | 1997-07-04 | 1999-01-26 | Sumitomo Electric Ind Ltd | 酸化物超電導バルクの製造方法 |
JP2003020225A (ja) * | 2001-07-06 | 2003-01-24 | Internatl Superconductivity Technology Center | 酸化物超電導体の製造方法及び酸化物超電導体 |
JP4314801B2 (ja) * | 2002-09-20 | 2009-08-19 | アイシン精機株式会社 | 酸化物超電導体の製造方法および熱処理炉 |
-
2004
- 2004-07-26 JP JP2004217594A patent/JP4794145B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-12 US US10/580,368 patent/US20070128735A1/en not_active Abandoned
- 2005-07-12 WO PCT/JP2005/013213 patent/WO2006011389A1/ja active Application Filing
- 2005-07-12 EP EP05762065A patent/EP1770190B1/en not_active Not-in-force
- 2005-07-12 AT AT05762065T patent/ATE545720T1/de active
- 2005-07-12 CN CNB2005800249691A patent/CN100538918C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2006036574A (ja) | 2006-02-09 |
CN1989277A (zh) | 2007-06-27 |
ATE545720T1 (de) | 2012-03-15 |
EP1770190B1 (en) | 2012-02-15 |
WO2006011389A1 (ja) | 2006-02-02 |
EP1770190A1 (en) | 2007-04-04 |
US20070128735A1 (en) | 2007-06-07 |
EP1770190A4 (en) | 2010-11-24 |
CN100538918C (zh) | 2009-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Morita et al. | Processing and properties of QMG materials | |
US5474976A (en) | Production of oxide superconductors having large magnetic levitation force | |
JPH0558626A (ja) | 酸化物超電導体及びその製造方法 | |
JP2688455B2 (ja) | 希土類系酸化物超電導体及びその製造方法 | |
JP4794145B2 (ja) | RE−Ba−Cu−O酸化物超電導体の作製方法 | |
JPH1121126A (ja) | 酸化物超電導バルクの製造方法 | |
JPH0751463B2 (ja) | 酸化物超電導体の製造方法 | |
JP3155333B2 (ja) | 臨界電流密度の高い酸化物超電導体の製造方法 | |
JP3115696B2 (ja) | 磁気浮上力の大きい酸化物超電導体の製造方法 | |
JPH10245223A (ja) | 酸化物超電導体及びその製造方法 | |
JP2854758B2 (ja) | 磁気浮上力の大きい酸化物超電導体 | |
JP2980650B2 (ja) | 希土類系酸化物超電導体の製造方法 | |
JP2006062896A (ja) | 酸化物超電導材料及びその製造方法 | |
JP2828396B2 (ja) | 酸化物超電導体及びその製造方法 | |
JP2931446B2 (ja) | 希土類系酸化物超電導体の製造方法 | |
JP3159764B2 (ja) | 希土類系超電導体の製造方法 | |
JP3115695B2 (ja) | 磁気浮上力の大きい酸化物超電導体の製造方法 | |
JP4628042B2 (ja) | 酸化物超電導材料及びその製造方法 | |
JP3155334B2 (ja) | 磁気浮上力の大きい酸化物超電導体およびその製造方法 | |
JP3242350B2 (ja) | 酸化物超電導体およびその製造方法 | |
JP2004161504A (ja) | RE−Ba−Cu−O系超電導材料前駆体とRE−Ba−Cu−O系超電導材料およびその製造方法 | |
JP2914799B2 (ja) | 酸化物超電導バルク材の製造方法 | |
JPH07187671A (ja) | 酸化物超電導体及びその製造方法 | |
JP2001180932A (ja) | 酸化物超電導体およびその製造方法 | |
JP3217727B2 (ja) | 酸化物超電導体の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061025 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061116 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100202 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100402 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20101214 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110210 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110628 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110726 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140805 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140805 Year of fee payment: 3 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140805 Year of fee payment: 3 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140805 Year of fee payment: 3 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |