@misc{Karen_Gambaryan_SHAPE,
 author={Karen Gambaryan and Vladimir Aroutiounian and Arpine Simonian and Torsten Boeck},
 address={},
 howpublished={online},
 contents={},
 abstract={The Liquid Phase Epitaxy (LPE) technique is used for self-assembled InAsSbP-based strain-induced islands formation on InAs(100) substrates. Here we show that such islands, as they decrease in size, are undergoing a shape transition. As the islands volume decrease, the following succession of shape transitions has been detected: truncated pyramid, \{111\} facetted pyramid, \{111\} and partially \{105\} facetted pyramid, completely unfacetted “pre-pyramid”, which gradually evolve to semiglob. The morphology, size, shape and composition of these objects are investigated by scanning electron microscope (SEM) and Energy Dispersive X-Ray Analysis (EDXA) technique. A critical size (~550 nm) of the InAsSbP-based strain-induced islands shape transformation from “pre-pyramid” to semiglobe is experimentally detected and, in addition, theoretically explained and calculated. Proposed theoretical approach has been also employed and tested for Si1xGex model system islands grown on a Si(001) substrate. It is shown that for both materials the theoretically calculated values of the critical size coincide with the experimentally obtained data.},
 title={SHAPE TRANSITION OF STRAIN-INDUCED InAsSbP ISLANDS AT LIQUID-PHASE EPITAXY ON InAs (100) SUBSTRATE: FROM PYRAMID TO SEMIGLOBE},
 type={Հոդված},
 keywords={Physics, Materials science},
}