Photoluminescence (PL) spectra, time profiles of PL intensity and PL excita
tion spectra (PLE) for inter 3d multiplets (3d-MS) transition of Mn2+ are o
bserved in the semimagnetic semiconductor CdMnTe under high pressures. Thos
e of inter 3d-MS and inter quantum levels (QL) transitions are also observe
d in quantum wells (CdTe/Cd0.4Mn0.6Te). The decay processes in these excite
d states are discussed. The decay process to the excited states of infrared
photoluminescence is also discussed for various concentrations. In these e
xcited states it is considered that large lattice relaxation is essential.