NEAR-EDGE STUDIES OF ND-CO INTERMETALLIC COMPOUNDS

X-ray K-absorption edges along with their near-edge structures have be en recorded using a Cauchois type bent crystal spectrograph of 0.4 m r adius in the transmission mode for the three intermetallic compounds v iz., Nd2Co17, NdCo5 and NdCo3. Chemical shifts have been estimated and correlated with earlier magnetic studies. The negative values of the chemical shifts for the K-edge of cobalt have been attributed to the f act that in these compounds cobalt atom behaves as an anion.