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Study of theTemperature Dependence of the Dielectric Properties of LiTsOa by Raman Spectroscopy BY B. 8. uMAROV3) (a), J. F. vETELIN04) (a), N. 8. ABDULLAEV (b), and A. A. ANIKIEV (b) 653 Dedicated to Prof. Dr. Dr. h.c. Dr. E. h. P. GORLICH on the occasion of his 75th birthdayThe phonon spectra of the A,-type symmetry vibrations in LiTaO, are measured by Raman scattering techniques over a wide temperature range which include the phase transition point. These spectra are then analyzed using the Kramers-Kronig relations to obtain the temperature and frequency dependence of the static dielectric constant, cZZ, and the infrared (IR) reflection spectra. Good agreement is obtained with results of direct experimental measurement. QOHOHHbIS CneKTp 1cone6a~ma A, Tuna CHMMeTpllH B KpllCTaJlJlaX LiTaO, IICCJleAOBaH B IIIHpOHOM TeMnepaTypHOM IIHTepBaJle MeTOHOM CIIeKTpOCKOIIHII KOM6IIHaUMOHHOrO PaCCeRHIIH CBeTa. DJIR paCseTa TeMnepaTypHOji II saCT0THOt 3aBHCHMOCTefi BeJIIl%4HbI cTamsecKoji A I I~J I~K T~E I Y~C K O~~ npoHmqaeMocTx eZZ II cnempa OTpameHm B AaneKol I.IK 06JlaCTII M C~O J I~~O B~J I O C~ CooTHomeme HpaMepca-KpoHmra. llonyseHo xopomee co-rJlaCHe C pe3ynbTaTaMII nPRMbIX II3MepeHHa BeJIIIsHHbl E z Z H K03@@HUMeHTa OTpameHHH.