|
Título:
|
Electron beam induced structural changes in bi_2Sr_2CaCu_2O_(8+x) studied by cathodoluminescence microscopy and secondary electron emission
|
|
Autores:
|
Díaz-Guerra Viejo, Carlos ;
Piqueras de Noriega, Javier ;
Tomashpolsky, Y. Y. ;
Sadovskaya, N. V.
|
|
Tipo de documento:
|
texto impreso
|
|
Editorial:
|
Springer, 1997-04
|
|
Dimensiones:
|
application/pdf
|
|
Nota general:
|
info:eu-repo/semantics/restrictedAccess
|
|
Idiomas:
|
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Física de materiales
,
Tipo = Artículo
|
|
Resumen:
|
Bi_2Sr_2CaCu_2O_(8+x) superconducting ceramics have been irradiated in the scanning electron microscope (SEM), and the irradiation-induced effects investigated by cathodoluminescence (CL), secondary electron emission (SEE) and X-ray microanalysis. Electron beam irradiation causes a slight Bi depletion and an inhomogeneous Ca distribution. A higher CL intensity emission is found in the irradiated areas, where besides an enhancement of the oxygen content related 2.4 eV band, another CL bands probably related to new non-superconducting phases induced by irradiation can be observed. SEE yield measurements allow to detect an oxygen depleted region surrounding the irradiated areas. X-ray microanalysis shows that this intermediate region retains the cationic composition of the unaffected material. CL spectra from bright zones inside the same area also show a dominant 2.4 eV emission band, which supports its relation with oxygen deficiency or rearrangement in high-T-c superconductors.
|
|
En línea:
|
https://eprints.ucm.es/id/eprint/26416/1/PiquerasJ210.pdf
|
