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oai:docta.ucm.es:20.500.14352/591972025-04-09T23:51:44Zcom_20.500.14352_14col_20.500.14352_15

Annealing and irradiation induced infrared luminescence of Bi_2Sr_2CaCu_2O_x ceramics Garcia, J. A. Remon, A. Urchulutegui, M. Piqueras De Noriega, Francisco Javier Jiménez, J. Torres Ruiz, Alejandro 538.9 Scanning Electron-Microscope Single-Crystals YBa_2Cu_3O(7-X) Cathodoluminescence Superconductors Física de materiales © Wiley-V C H Verlag GMBH Infrared luminescence of Bi2Sr2CaCu2Ox ceramics, in the range 800 to 1800 nm (0.7 to 1.5 eV) has been investigated by photoluminescence and cathodoluminescence in the scanning electron microscope (SEM). Untreated samples do not show infrared luminescence while annealed or electron irradiated samples show an emission band at about 950 nm (1.3 eV). Micro-Raman spectroscopy is used to investigate the structural changes produced by the treatments and to relate them to the observed luminescence. The relation of the 950 nm band with disorder in the oxygen sublattice is discussed. Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2023-06-20T19:04:04Z 2023-06-20T19:04:04Z 1997 journal article VoR https://hdl.handle.net/20.500.14352/59197 1862-6300 10.1002/1521-396X(199702)159:2<535::AID-PSSA535>3.0.CO;2-O restricted access application/pdf Wiley