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The vibrational properties of Zn,Cdl -,Se phonons are studied using Raman scattering. The change of the LO-phonon spectrum versus crystal composition is found to be of the one-mode type. The TO-phonon behaviour is much more complicated. It exhibits rather anomalous features in the line shape and TO-mode frequency versus crystal composition as well as temperature. The above phenomena are interpreted in terms of the anharmonic coupling between TO-mode and twophonon states. This coupling is well described by the theory developed. aKClIepHMeHTaJIbH0 HCCneAOBEiHbI ClIeKTpbl HOM6MHaQMOHHOrO paCCeRHMR MOHOKpMCTaJl-JIOB Zn,Cdl -,Se. &TIFi LO-@OHOHOB YCTaHOBJIeH O n H O M O~O B b l f i XapaKTep IlepeCTpO&U4 ClIeKTpa C COCTBBOM. AJIR TO-@OHOHOB KapTHHa M3MeHeHMR CIleXTpOB CyUeCTBeHHO 6onee CJIOWHaR. 06HapyHCeHHbIe OCO6eHHOCTH 3aBHCHMOCTM YaCTOTbI, MHTeHCMBHOCTH M (POPMbI IIOJIOCbI TO-(POHOHOB OT COCTaBa M TeMIlepaTypbI 06yCnOBJIeHbI aHraPMOHHYeCKHM B3aMMOAefiCTBMeM HX C ~BYX(POH0HHbIMH B036YXEAeHMRMH aKyCTMqeCIEMX (POHOHOB. Pa3-BMTaFI TeOpMR TaKOrO B3aKMOAefiCTBMR XOpOIUO OllHCbIBaeT BCe er0 KaYeCTBeHHbIe OCO-6eHHOCTH.

Resonant Raman scattering in bulk Znl-,Cd,Se crystals obtained from the vapour phase by the "free-growing" method is studied experimentally. The existence of seventh-order LO-phonon lines under condition of excitation above the band gap and fourth-order LO-phonon lines under condition of excitation below the band gap is observed for mixed semiconductor crystals for the first time. The obtained ratios of intensities of different lines in multiple-phonon spectra are compared with the results of the theory involving the continuous exciton spectrum as an intermediate state. 3KCIIepHMeHTaJIbHO HCCJleAOBaHO pe30HaHCHOe KOM6HHa4HOHHQe PaCCeRHHe B KpHCTaJI-JIax Znl -,Cd,Se, n0JIyseHHbIX MeTOAOM "CB060AHOrO POCTa". BnepsbIe &JIH CMelllaHHbIX IIOJIyIIpOBOAHHHOB Ha6JIIOAaJIHCb IIpOL(eCCb1 pe30HaHCHOrO KOM6HHa~HOHHOrO PaCCeRHHR BIIJIOTL A0 OHHOBpeMeHHOrO pOX