Author/Authors :
Tang، نويسنده , , M. and Holliday، نويسنده , , K.S. and Valdez، نويسنده , , J.A. and Uberuaga، نويسنده , , B.P. and Dickerson، نويسنده , , P.O. and Dickerson، نويسنده , , R.M. and Wang، نويسنده , , Y. and Czerwinski، نويسنده , , K.R. and Sickafus، نويسنده , , K.E.، نويسنده ,
Abstract :
Ion irradiation damage effects in delta (δ) Y6U1O12 were characterized using grazing incidence X-ray diffraction and transmission electron microscopy. Experimental results revealed no amorphization transformation occurs in Kr-ion irradiated Y6U1O12 to a maximum displacement damage dose of ∼50 displacements per atom at cryogenic temperature. Density functional theory calculations indicate that δ-Y6U1O12 possesses a relatively low cation antisite formation energy, which may help to explain the observed resistance of δ-Y6U1O12 to irradiation-induced amorphization of δ-Y6U1O12.
