Study of physico-chemical and physical properties of the high critical temperature superconductor YBa2Cu3O7-d in relation to the substitution of copper by zinc or iron and the oxygen stoichiometry

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

Study of physico-chemical and physical properties of the high critical temperature superconductor YBa2Cu3O7-d in relation to the substitution of copper by zinc or iron and the oxygen stoichiometry

Doctorat en Sciencesinfo:eu-repo/semantics/nonPublishe

Superconducting and normal-state transport properties in bulk YBaCuO, doped with Zn

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Hall effect in bulk YBa2(Cu1-xZnx)3O7-δ

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Point defect modeling of the oxygen stoichiometry in the YBa2 (Cu1-yZny)3O7-x orthorhombic domain (y = 0.00, 0.02, 0.04). Consequences on Tc and the charge transfer

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Point defects modeling of the oxygen isotherms of YBa2(Cu1-xFex)3O7-6 (x = 0.04, 0.08)

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Interface reactions and diffusion in ZnO-YBaCuO and Fe2O3-YBaCuO systems

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Zinc saturation in YBa2Cu3O7-D

Int. Conf. M2S-HTSC IV, Grenoble, 5-9/7/1994info:eu-repo/semantics/publishe

Zinc saturation in YBa2Cu3O7-δ

Saturation in YBa2(Cu1-xZnx)3O7-δ has been studied in relation to phase composition. Nominal compositio up to x=0.3 have been synthesized by an optimized 3 steps solid state route. Values as high as x=0.12 were observed at nominal zinc content where secondary phases appear (x≥0.1). Mixtures of pure YBa2Cu3O7-δ with ZnO were also sintered. In this case, x is never higher than 0.07. Rietveld refinement applied to X-ray diffraction datas shows that the orthorhombic character of the YBa2Cu3O7-δ lattice is maintained in the range 0≤x≤0.12. Correlations between zinc saturation and Y2O3BaCO3CuO phase diagram are established. © 1994.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Effect of Zn and Fe on the (micro)structure and copper charge excess of the YBaCuO superconductor

info:eu-repo/semantics/publishe