抄録
The reflectivities at normal incidence of samples of the intermetallic compounds NiAl and CoAl are presented in the photon energy region from 0.5 to 6.0 eV. The data and their interpretation are compared with those of Sambongi, Hagiwara and Yamadaya (J. Phys. Soc. Japan 21 (1966) 923).