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The motion of extended defects in solids is the key to understanding many important physical phenomena. Defect production in collision cascades in La(0.9)Sr(0.1)Ga(0.8)Mg(0.2)O(3-γ) has been examined by molecular dynamics simulations using a partial charge model combined with the Ziegler-Biersack-Littmark potential. computer simulation Showed nonlinear oscillations were excited in the system of coupled atomic oscillators of solids, which resulted in the formation of new collective stable structural states in crystal lattices. For small vacancy clusters, the binding energy decreases with increasing cluster size, and ranges from 20 to 160 eV .These results indicate that the small vacancy clusters in LSGM are stable at temperatures up to 900 K, which is consistent with experimental abservations.