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Growth modes of Fe(110) revisited: a contribution of self-assembly to magnetic materials | | Olivier Fruchart
; Pierre-Olivier Jubert
; Mustafa Eleoui
; Fabien Cheynis
; Bogdana Borca
; Philippe David
; Valérie Santonacci
; Annick Liénard
; Manabu Hasegawa
; Claire Meyer
; | | Date: |
11 Aug 2006 | | Subject: | Other | | Abstract: | We have revisited the epitaxial growth modes of Fe on W(110) and Mo(110), and propose an overview or our contribution to the field. We show that the Stranski-Krastanov growth mode, recognized for a long time in these systems, is in fact characterized by a bimodal distribution of islands for growth temperature in the range 250-700°C. We observe firstly compact islands whose shape is determined by Wulff-Kaischev’s theorem, secondly thin and flat islands that display a preferred height, ie independant from nominal thickness and deposition procedure (1.4nm for Mo, and 5.5nm for W on the average). We used this effect to fabricate self-organized arrays of nanometers-thick stripes by step decoration. Self-assembled nano-ties are also obtained for nucleation of the flat islands on Mo at fairly high temperature, ie 800°C. Finally, using interfacial layers and solid solutions we separate two effects on the preferred height, first that of the interfacial energy, second that of the continuously-varying lattice parameter of the growth surface. | | Source: | arXiv, cond-mat/0608261 | | Services: | Forum | Review | PDF | Favorites | |
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