We have inserted iodine and chlorine in BiSrCaCuO (BSCCO) and YBaCuO (
YBCO) granular compounds. The halogenated materials were investigated
using Raman spectroscopy, susceptibility, x-ray diffraction, x-ray pho
toelectron spectroscopy. Cl- and I-3- anions were found. We briefly di
scuss the insertion mechanism of these species.