WO2003015187A2 - Supraleitendes material - Google Patents
Supraleitendes material Download PDFInfo
- Publication number
- WO2003015187A2 WO2003015187A2 PCT/EP2002/008565 EP0208565W WO03015187A2 WO 2003015187 A2 WO2003015187 A2 WO 2003015187A2 EP 0208565 W EP0208565 W EP 0208565W WO 03015187 A2 WO03015187 A2 WO 03015187A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cuprate
- material according
- nickel
- powder
- cations
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 56
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 17
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 239000011777 magnesium Substances 0.000 claims description 14
- 229910052744 lithium Inorganic materials 0.000 claims description 13
- 229910052749 magnesium Inorganic materials 0.000 claims description 12
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 9
- -1 lithium cations Chemical class 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000005751 Copper oxide Substances 0.000 claims description 7
- 229910000431 copper oxide Inorganic materials 0.000 claims description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- UDRRLPGVCZOTQW-UHFFFAOYSA-N bismuth lead Chemical compound [Pb].[Bi] UDRRLPGVCZOTQW-UHFFFAOYSA-N 0.000 claims 1
- 239000002887 superconductor Substances 0.000 abstract description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract 1
- YWMAPNNZOCSAPF-UHFFFAOYSA-N Nickel(1+) Chemical compound [Ni+] YWMAPNNZOCSAPF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000416 bismuth oxide Inorganic materials 0.000 abstract 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 abstract 1
- 229940006487 lithium cation Drugs 0.000 abstract 1
- 229940096405 magnesium cation Drugs 0.000 abstract 1
- 229940006444 nickel cation Drugs 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 4
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 4
- 229910001947 lithium oxide Inorganic materials 0.000 description 4
- JUTBAAKKCNZFKO-UHFFFAOYSA-N [Ca].[Sr].[Bi] Chemical compound [Ca].[Sr].[Bi] JUTBAAKKCNZFKO-UHFFFAOYSA-N 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- CHDMVUNQFVCXLT-UHFFFAOYSA-N [Ca].[Sr].[Pb].[Bi] Chemical compound [Ca].[Sr].[Pb].[Bi] CHDMVUNQFVCXLT-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000004943 liquid phase epitaxy Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910003446 platinum oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
-
- 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
Definitions
- the invention relates to superconducting material based on cuprate, which contains lithium, magnesium and / or nickel ions.
- the term “superconductive material based on cuprate material” refers to all those oxide ceramics which contain CuO, have superconducting properties at a sufficiently low temperature and can be processed further into semi-finished products under suitable conditions, e.g. B. for the formation of, in particular, melt-textured moldings, in layer form, applied to tapes or substrates, as wire, in "powder-in-tube -" form or as a target in coating processes.
- Superconducting bodies e.g. B. melt-textured moldings can be used for example for cryomagnetic applications with higher external magnetic fields. For example, components in electric motors can be involved. Depending on the strength of the external magnetic field, it was observed that the larger the external magnetic field, the lower the critical current density. It is an object of the present invention to provide superconductive material based on cuprate material which can be processed further into shaped articles with an increased critical current density in the presence of external magnetic fields. This object is achieved by the cuprate-based material according to the invention.
- the superconductive material based on cuprate material according to the invention is characterized by a content of lithium, magnesium and / or nickel cations. The lithium, magnesium or nickel is usually in the form of the oxide.
- Material which contains 0.006 to 0.8% by weight of nickel and / or 0.002 or 0.2% by weight of magnesium and / or 0.006 to 0.06% by weight of lithium is preferred.
- 0.1 to 0.4% by weight of nickel and / or 0.03 to 0.15% by weight of magnesium and / or 0.01 to 0.05% by weight of lithium are preferably contained.
- the material according to the invention is preferably in particulate form, so that it can be further processed into semi-finished products or other bodies, preferably into melt-textured shaped bodies. It is preferably in powder form.
- cuprate material is cuprate material of the rare earth, alkaline earth metal cuprate type, and cuprate material of the bismuth (lead) alkaline earth metal, copper oxide type. These materials are known per se; Well-suited materials have already been mentioned at the beginning.
- Bismuth-strontium calcium cuprate with an atomic ratio of 2: 2: 1: 2 and 2: 2: 2: 3 can be used, with the latter being able to replace part of the bismuth with lead.
- the bismuth strontium calcium cuprates with modifications in the stoichiometry of the aforementioned atomic ratios are of course also usable.
- Superconducting cuprate material as a base is known per se.
- Bi-containing cuprates are e.g. B. described in: EP-A 0 336 450, DE-OS 37 39 886, EP-A 0 330 214, EP-A 0 332 291 and EP-A 0 330 305.
- RE stands for one or more of the elements Y (this element is preferred), La, Nd or other lanthanide metals, AE means barium, which can be partially replaced by Sr and / or Ca, M stands for Li, Mg or Ni and 0 , 0002 ⁇ x ⁇ 2-10 ⁇ 2 and -0.8 ⁇ ⁇ 0.2. Kn ⁇ 1, 5 and 2>m> 1, 5 also apply. Preferred is 0, 0005 ⁇ x ⁇ 0, 01. A part (up to 50 atom%) of the Li, Mg or Ni can be replaced by zinc.
- AE is yttrium and AE is barium (i.e., yttrium-barium cuprate).
- the powder according to the invention has a particle size distribution in which 90% of all particles have a diameter below 35 ⁇ m.
- the YBa 2 Cu 3 ⁇ 7 _ x powder which preferably already contains the lithium, magnesium or nickel cations, can be converted into moldings in a manner known per se. It is usually pressed and shaped, ie it is compacted.
- the powder can be produced in a manner known per se by mixing yttrium oxide, barium oxide, copper oxide, magnesium oxide, lithium oxide and / or nickel oxide or their precursors.
- Yttrium is usually used in the form of Yttrium oxide, the copper in the form of the copper oxide and the barium in the form of the barium carbonate.
- Magnesium oxide or lithium oxide can also be generated from decomposed carbonate in situ. The conversion of the raw materials (metal oxides or carbonates) into superconducting powder is known.
- German Patent DE 42 16 545 Cl Such a method is disclosed in German Patent DE 42 16 545 Cl.
- the material is heated up to a heating temperature of 950 ° C in a multi-stage temperature treatment and then cooled again.
- Preferred melt-textured moldings can then be produced by mixing the powder according to the invention with the desired fluxpinning additive, optionally grinding the powder in order to achieve the desired particle size, and then subjecting it to a temperature treatment.
- the powder material is expediently pressed uniaxially into green compacts. Then the melt texturing takes place.
- Various types of bodies can be produced, for example shaped bodies, in particular by melt texturing.
- International patent application WO 97/06567 discloses a yttrium barium cuprate mixture which is particularly suitable for the production of melt-processed high-temperature superconductors with high levitation force. It is important with this mixture that less than 0.6% by weight of free copper oxide which is not bound in the yttrium barium cuprate phase and less than 0.1% by weight of carbon are present.
- additives are added which form "pinning" centers or promote their formation. These centers enable the critical current density in the superconductor to be increased.
- additives which promote fluxpinning are Y 2 BaCu0 5 , Y 2 0 3 , Pt0 2 , Ag 2 0, Ce0 2 , Sn0 2 , Zr0 2 , BaCe0 3 and BaTi0 3 . These additives can be added in an amount of 0.1 to 50% by weight.
- the yttrium barium cuprate powder is set at 100% by weight.
- Platinum oxide for example, is expediently added in an amount of 0.5 to 5% by weight.
- DE-OS 38 26 924 deposition from homogeneous solution
- thick layers in tape form or wire form with an intermediate layer by calcining a precursor phase applied to the support EP-A 0 339 801
- layer deposition by PVD Process EP-A 0 299 870
- CVD process EP-A 0 388 754
- wire in the form of a ceramic powder-filled metal tube wire in the form of a ceramic powder-filled metal tube (powder-in-tube technology)
- DE-OS 37 31 266 DE-OS 37 31 266.
- EP-A 0 375 134 discloses a glass ceramic molded body
- EP-A 0 362 492 discloses a cast body that solidifies from the melt.
- the superconducting bodies can be present in the "powder in tube”.
- the material is in powder form within a metal tube (made of silver, for example). They are flexible, wire-like structures.
- the shaped bodies which can be produced with the material according to the invention have as an advantage a substantially higher critical current density, which is constant over a large range, than bodies produced for comparison with corresponding cations if the bodies have an external one Magnetic field works. This is attributed to the Li, Mg and Ni cations.
- the higher critical current density is already noticeable at low field strengths, for example in the range from 0 to 1 Tesla.
- the bodies according to the invention have an approximately constant in the field strength of 0 to 5 Tesla, preferably 0.1 to 4 Tesla of the external magnetic field Current density at a very high level. The level of levitation is very high. In series tests, it has been found that a further advantage of the presence of the cations mentioned is that the properties of the individual samples are much less scattered (levitation force, remanence induction, current density).
- the bodies Due to the increased constant critical current density in the presence of an external magnetic field, whether in the range from 0 to 5 Tesla or preferably from 0.1 to 4 Tesla, the bodies are very well suited for industrial use.
- the material is generally suitable, for example, for the production of power supplies, current-conducting cables or for use with poles in electric motors.
- Material of the 2-2-1-2 type is suitable, for example, for the production of short-circuit current limiters, high field magnets and power supplies.
- Material of the 2-2-2-3 type is suitable, for example, for the production of power transmission cables, transformers, SMES (superconducting magnetic energy storage), windings for electric motors, generators, high field magnets, power supplies and short-circuit current limiters.
- An advantage is, for example, that these components can be made more compact and have a higher efficiency than was previously possible.
- Yttrium oxide, barium carbonate and copper oxide were used in quantities so that the atomic ratio of yttrium, Barium and copper was set to 1: 2: 3.
- the foreign metal ions were added to the copper oxide starting material and thus introduced into the powder.
- the starting products were homogenized and pressed. Then they were decarbonated in a heat treatment. For this purpose, they were slowly brought to a final temperature of 940 ° C., held at this temperature for several days and then gradually cooled.
- the product obtained was then broken up and comminuted in a jet mill. It was then pressed again and again subjected to a temperature treatment in an oxygen stream. It was slowly heated to 940 ° C and held at this temperature for several hours. Then it was slowly allowed to cool to ambient temperature. It was broken, sieved and the sieved fine material was dry milled in a ball mill.
- the dg 0% value (grain size distribution determined in the Cilas laser granulometer) was below 30 ⁇ m
- CuO and lithium oxide were mixed in such an amount that the atomic ratio of Cu to Mg was about 9900: 100. This material was then processed as described in the general manufacturing instructions.
- the powder produced contained 0.02% by weight of Li.
- Example 1 was repeated, instead of lithium oxide, NiO was used.
- the powder produced contained 0.4% by weight of Ni.
- the material according to the invention was processed into moldings by melt texturing, as described in WO 97/06567. These showed an increased critical current density in the presence of an external magnetic field.
- the Li-containing material achieved up to 5 T 30 kA / cm 2 in a field area.
- the nickel-containing material was characterized by a critical current density that was higher by a factor of 2.5 (it was 30 kA / cm 2 ) than material which was produced without nickel. In the zero field, the nickel-containing material corresponded to the conventional material (40 kA / cm 2 ).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10137969.2 | 2001-08-08 | ||
DE10137969A DE10137969A1 (de) | 2001-08-08 | 2001-08-08 | Supraleitendes Material |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003015187A2 true WO2003015187A2 (de) | 2003-02-20 |
WO2003015187A3 WO2003015187A3 (de) | 2003-11-06 |
Family
ID=7694173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/008565 WO2003015187A2 (de) | 2001-08-08 | 2002-08-01 | Supraleitendes material |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10137969A1 (de) |
WO (1) | WO2003015187A2 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991011030A1 (es) * | 1990-01-17 | 1991-07-25 | Universidad Complutense De Madrid | SUPERCONDUCTOR IONICO OBTENIDO POR INTRODUCCION DE ATOMOS DE LITIO EN LA RED DE MATERIALES SUPERCONDUCTORES DE ALTA TEMPERATURA TIPO Ba2YCu3O¿7-x? |
DE19943838A1 (de) * | 1999-03-24 | 2001-03-15 | Solvay Barium Strontium Gmbh | Supraleitende Formkörper |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08245297A (ja) * | 1995-03-07 | 1996-09-24 | Natl Res Inst For Metals | 酸化物超電導体 |
-
2001
- 2001-08-08 DE DE10137969A patent/DE10137969A1/de not_active Withdrawn
-
2002
- 2002-08-01 WO PCT/EP2002/008565 patent/WO2003015187A2/de not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991011030A1 (es) * | 1990-01-17 | 1991-07-25 | Universidad Complutense De Madrid | SUPERCONDUCTOR IONICO OBTENIDO POR INTRODUCCION DE ATOMOS DE LITIO EN LA RED DE MATERIALES SUPERCONDUCTORES DE ALTA TEMPERATURA TIPO Ba2YCu3O¿7-x? |
DE19943838A1 (de) * | 1999-03-24 | 2001-03-15 | Solvay Barium Strontium Gmbh | Supraleitende Formkörper |
Non-Patent Citations (6)
Title |
---|
BICHILE G K ET AL: "Influence of nickel substitution on flux pinning and critical currents in YBa2Cu3O7-d" CRYOGENICS, Bd. 31, Nr. 9, September 1991 (1991-09), Seiten 833-838, XP000258961 ISSN: 0011-2275 * |
DATABASE WPI Section Ch, Week 199648 Derwent Publications Ltd., London, GB; Class L03, AN 1996-482045 XP002245057 & JP 08 245297 A (ASAHI GLASS CO LTD), 24. September 1996 (1996-09-24) -& JP 08 245297 A (ASAHI GLASS CO LTD) 24. September 1996 (1996-09-24) * |
POP A V: "Effect of 3d element substitution for Cu on the ac and dc magnetic properties of bulk (Bi,Pb):2223 superconductor" SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Bd. 12, Nr. 10, Oktober 1999 (1999-10), Seiten 672-675, XP002245056 ISSN: 0953-2048 * |
RAFFO L ET AL: "Effects of Mg doping on the superconducting properties of YBa2Cu3O7-d and La1.85Sr0.15CuO4 systems" SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Bd. 8, Nr. 6, Juni 1995 (1995-06), Seiten 409-414, XP002244546 ISSN: 0953-2048 * |
SCHWARTZ J ET AL: "Properties of Li-doped, polycrystalline, melt-textured, Bi-Sr-Ca-Cu-O tapes prepared by powder-in-tube processing" PHYSICA C, Bd. 185-189, pt.4, Dezember 1991 (1991-12), Seiten 2403-2404, XP009012513 ISSN: 0921-4534 * |
SUCHOW L ET AL: "Partial substitution of Li for Cu in superconducting YBa2Cu3Oy" JOURNAL OF SUPERCONDUCTIVITY, Bd. 2, Nr. 4, Dezember 1989 (1989-12), Seiten 485-492, XP009012512 ISSN: 0896-1107 * |
Also Published As
Publication number | Publication date |
---|---|
DE10137969A1 (de) | 2003-02-20 |
WO2003015187A3 (de) | 2003-11-06 |
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