Raman scattering from electronic excitations of samarium in semiconducting and metallic Sm_1-xY_xS

The Raman spectra of Sm1-xYxS for x{slanted equal to or less-than}0.4 have been measured. Electronic scattering between the J = 0 ground state and the J = 1 and 2 excited states of Sm2+ is observed. The singlet-triplet transition is observed on both sides of the black to gold phase transition in Sm1-xYxS. © 1976.