RT Journal Article T1 Characterization of tetragonal Tl_2Ba_2Cu_1O_(6+δ) by cathodoluminescence microscopy A1 Gómez, P. A1 Piqueras De Noriega, Francisco Javier A1 Opagiste, C. AB Superconducting Tl_2Ba_2Cu_1O(6+δ) ceramics shows two broad luminescence bands centered at 430 nm (2.9 eV) and 530 nm (2.3 eV) wich can not be related to impurity phases. The intensity of the bands is inhomogeneously distributed in the sample and there is a relation between regions of different intensities with the grains observed in the scanning electron microscope. Relationship of cathodoluminescence contrast with oxygen content distribution is discussed. PB Elsevier Science BV SN 0921-4534 YR 1994 FD 1994-12 LK https://hdl.handle.net/20.500.14352/59267 UL https://hdl.handle.net/20.500.14352/59267 NO © 1994 Published by Elsevier B.V.International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV (M2S-HTSC IV) (1994. Grenoble, Francia). DS Docta Complutense RD 21 sept 2024