公开(公告)号：US10450199B2

公开(公告)日：2019-10-22

申请号：US15554742

申请日：2016-02-24

Applicant: BASF SE

Inventor： Maximilian Hemgesberg ,  Denis Schwall ,  Thorsten Martin Staudt ,  Isabel van Driessche ,  Katrien De Keukeleere ,  Jonathan De Roo ,  Till Gruendling ,  Matthias Maier ,  Michael Baecker ,  Jan Bennewitz ,  Ron Feenstra ,  Hannes Rijckaert ,  Hens Zeger

IPC: C01G1/02 ,  C01G23/047 ,  C01G25/02 ,  C01G27/02 ,  C01G35/00 ,  C09C1/36 ,  C09C3/08 ,  C09D5/24 ,  C09C1/00 ,  H01L39/24 ,  C09D11/033 ,  C09D11/38

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.