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Simulations of cascades in pure and alumina doped magnesia
- Source :
-
Nuclear Instruments & Methods in Physics Research Section B . Sep2006, Vol. 250 Issue 1/2, p28-35. 8p. - Publication Year :
- 2006
-
Abstract
- Abstract: Atomic scale molecular dynamics simulations of displacement cascades are carried out in an initially defect-free MgO lattice and in a lattice where 0.2% of the Mg2+ ions have been replaced by Al3+ ions, charge compensated by magnesium vacancies. Results show that the properties of the cascade in the perfect lattice exhibit considerable anisotropy with respect to the direction of the incident primary knock-on atom (PKA). We find that a different anisotropy of equivalent magnitude occurs as a consequence of the (random) distribution of defects in the vicinity of the cascade. This suggests that the details of damage production during a cascade event can depend sensitively on the distribution of dopants and impurity atoms around the PKA. [Copyright &y& Elsevier]
- Subjects :
- *MOLECULAR dynamics
*ELECTRONS
*DOPED semiconductor superlattices
*MAGNESIUM oxide
Subjects
Details
- Language :
- English
- ISSN :
- 0168583X
- Volume :
- 250
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section B
- Publication Type :
- Academic Journal
- Accession number :
- 21738399
- Full Text :
- https://doi.org/10.1016/j.nimb.2006.04.080