Nanoparticles for the use as pinning centers in superconductors

US10450199B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Maximilian Hemgesberg · Kaiserslautern, DE
• Denis Schwall · Ludwigshafen, DE
• Thorsten Martin STAUDT · San Francisco, US
• Isabel van DRIESSCHE · Waasmunster, BE
• Katrien DE KEUKELEERE · Zaffelare, BE
• Jonathan DE ROO · Evergem, BE
• Till Gruendling · Mannheim, DE
• Matthias MAIER · Sandhausen, DE
• Michael Baecker · Cologne, DE
• Jan BENNEWITZ · Sankt Augustin, DE
• Ron Feenstra · Bonn, DE
• Hannes RIJCKAERT · Zomergem, BE
• Hens Zeger · Evergem, BE

Key dates

• Filing date: Feb 24, 2016
• Grant date: Oct 22, 2019
• Expiry date: Feb 24, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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.