The influence of carrier concentration on the superconductive properties of YBa(2)Cu(3-x)Li(x)O(6.5+y-x/2)
The influence of the addition of lithium, at five different concentration levels, on the electrical properties of YBa(2)Cu(3)O(6.5+y) (123) compound has been investigated. A complete chemical characterisation of the doped samples has been performed, determining the oxygen concentration by iodometric titration and the Li content by spectrometrical flame analyses. A decrease of the lattice parameter c has been revealed by X-ray measurements with the increase of the lithium content. It appears that the Li prefers the Cu site on the CuO(2) planes and decreases the Tc transition temperature, inducing, progressively, a semiconductor behaviour also at constant average Cu charge.
Bibliographic Reference: Article: Physica C, Vol. 195 (1992) pp. 177-184
Record Number: 199211039 / Last updated on: 1994-12-02
Original language: en
Available languages: en