NANOPARTICLES FOR THE USE AS PINNING CENTERS IN SUPERCONDUCTORS
First Claim
1. Nanoparticles, comprising:
- an oxide of Sr, Ba, Y, La, Ti, Zr, Hf, Nb, or Ta,wherein;
the nanoparticles have a weight average diameter of 1 to 30 nm, andan organic compound of general formula (I), (II) or (III) or an organic compound containing at least two carboxylic acid groups is on the surface of the nanoparticles,
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Abstract
The present invention is in the field of nanoparticles, their preparation and their use as pinning centers in superconductors. In particular the present invention relates to nanoparticles comprising an oxide of Sr, Ba, Y, La, Ti, Zr, Hf, Nb, or Ta, wherein the nanoparticles have a weight average diameter of 1 to 30 nm and wherein an organic compound of general formula (I), (II) or (III) or an organic compound containing at least two carboxylic acid groups on the surface of the nanoparticles (I) (II) (III) wherein a is 0 to 5, b and c are independent of each other 1 to 14, n is 1 to 5, f is 0 to 5, p and q are independent of each other 1 to 14, and e and f are independent of each other 0 to 12.
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13 Claims
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1. Nanoparticles, comprising:
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an oxide of Sr, Ba, Y, La, Ti, Zr, Hf, Nb, or Ta, wherein; the nanoparticles have a weight average diameter of 1 to 30 nm, and an organic compound of general formula (I), (II) or (III) or an organic compound containing at least two carboxylic acid groups is on the surface of the nanoparticles, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13)
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11. The ink according to claim, wherein at least one of the rare earth metal-containing compound or the yttrium-containing compound, the alkaline earth metal-containing compound and the transition metal-containing compound contains fluorine.
Specification