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Transformations of micron-sized PbTe surface structures induced by low energy ions.
- Source :
-
Journal of Alloys & Compounds . Nov2021, Vol. 883, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • We observed peculiar form changes of micron-sized ion-induced structures on PbTe surface. • The first is transformation of the ion-induced micro-sized cones into micropyramids. • Another is formation of well-ordered ripples on the facets of micropyramids. • Cones transformation is caused by planes of easy cleavage and high reticular density. • Ripples appear due to self-organization of {111} and {110} planes forming the facets. [Display omitted] Formation and transformation of micron-sized structures on PbTe crystal surfaces under impact of low energy Ar+ ions is studied. New phenomena occurring due to interaction of energetic ions and atoms forming the main crystallographic planes of solid crystalline compounds, namely the transformation of ion-induced conical structures into pyramidal ones and the formation of facets of the micropyramids with well-ordered ripples during the process of transformation are revealed. We show that conical-pyramidal transformations occur on any PbTe sputtering surface, but the shape of pyramidal structures depends on the surface crystallographic orientation. If the pyramid originates from the ion-induced conical structure on PbTe target of (100) orientation it has the tetrahedral shape and its facets are covered with pronounced well-ordered ripples arranged in parallel to the base of the pyramid and closed at its edges. We show that: (i) micro-sized conical structures ion-induced on PbTe surface are transformed into pyramidal ones due to the tendency of the PbTe compound to the easy cleavage along crystallographic planes of high reticular density; (ii) the well-ordered ripples on the facets of the tetrahedral pyramids forming from conical structures appear due to self-organization of {111} and {110} crystallographic planes shaping pyramidal facets. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 883
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 151832583
- Full Text :
- https://doi.org/10.1016/j.jallcom.2021.160978