COMPARATIVE-STUDY OF THE PHASE-TRANSITION IN TGSE AND DTGSE (X=0.62) CRYSTALS UNDER GAMMA-IRRADIATIONстатья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:The influence of gamma-irradiation upon the second order phase transition in TGSe and the first order phase transition in DTGSe(x = 0.62) crystals was studied by means of specific heat measurements. It is shown that gamma-irradiation induced defects change the thermodynamical behavior of both crystals and the Landau expansion coefficient becomes a function of the defects concentration. It was revealed that the order of the phase transition in the DTGSe crystal changes for D = 300 KR. The full picture of both crystals’ evolution was presented and analyzed in the framework of the Landau theory with its development for defected crystals.