FILMES FINOS CU 111 X-RAY DIFFRACTION SILICON PT(111) SP2 SURFACE LNLS PD(111) SEMICONDUTORES PD ULTRATHIN FILMS LEED SB PD ON CU 111 W(100) SURFACE STRUCTURE MONOCRISTAIS AL SOBRE NI(111) ÓXIDOS LUZ SINCROTRON SI RANDON SURFACE ATA SB ON PD(111)AND NI(111) XPS STM MODEL CATALYST PD ON NI 111 SURFACE ALLOYS SYNCROTRON RADIATION AG(1110) OXIDES CU ON PD111 DICHROISM