RT Journal Article T1 Study of structural-changes in YBa_2Cu_3O_(7-x) by cathodoluminescence in the scanning electron-microscope A1 Piqueras De Noriega, Francisco Javier A1 Fernández Sánchez, Paloma A1 Vicent López, José Luis AB Changes in the visible and infrared cathodoluminescence(CL)spectra of YBa2Cu3O7−x are detected during irradiation in the scanning electron microscope. Results indicate the influence of oxygen content on the appearance of a CL band at 450–600 nm. In irradiated samples an infrared band at 1600–1700 nm has been observed. PB Amer Inst Physics SN 0003-6951 YR 1990 FD 1990-12-17 LK https://hdl.handle.net/20.500.14352/59294 UL https://hdl.handle.net/20.500.14352/59294 LA eng NO © Amer Inst Physics.This work was partially supported by CICYT (Projects BP86-0151 and MAT 88-251-CO 2-02). The infrared equipment was donated by Alexander von Humboldt stiftung. NO CICYT DS Docta Complutense RD 13 oct 2025