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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.

Additional information

Authors: FEDUZI R, JRC Ispra (IT);LANZA F, JRC Ispra (IT);GIARDINI M D, JRC Ispra (IT)
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