CHARACTERIZATION OF THE 105 K SUPERCONDUCTOR Tl2Ba2CaCu208 ("2212")

Christine Opagiste (1) , G. Triscone (2) , M. Couach (1) , T.K. Jondo (3) , J. -L. Jorda (3) , A. Junod (2) , A.F. Khoder (1)

1 LCP - Laboratoire de Cryophysique
2 DPMC - Département de Physique de la Matière Condensée
3 Laboratoire de Physicochimie Minérale

Homogeneous Tl1.8Ba2CaCu208 ceramics were synthesized by a novel route, starting from Tl2Ba205 precursors and using high gas pressures. This method allows tight control of thallium losses, resulting in dense, large-grained samples with sharp superconducting transitions above 105 K. Results of a characterization by X-ray diffraction, optical micrographs and micro-probe analysis are presented, together with selected physical properties.

Mots clés: High Tc superconductors; Thallium compound; Tl-2212; high pressure synthesis; electrical resistivity; AC susceptibility

Domaines: Supraconductivité [cond-mat.supr-con]

Christine Opagiste, G. Triscone, M. Couach, T.K. Jondo, J. -L. Jorda, et al.. CHARACTERIZATION OF THE 105 K SUPERCONDUCTOR Tl2Ba2CaCu208 ("2212"). 20th International Conference on Low Temperature Physics LT-20, Aug 1993, Eugene, Oregon, United States. pp.2183-2184. ⟨hal-00593131⟩