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000186115 0247_ $$2doi$$a10.1063/1.4887522
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000186115 1001_ $$0P:(DE-HGF)0$$aBadía-Romano, L.$$b0$$eCorresponding Author
000186115 245__ $$aIron silicide formation at different layers of (Fe/Si)$_{3}$ multilayered structures determined by conversion electron Mössbauer spectroscopy
000186115 260__ $$aMelville, NY$$bAmerican Inst. of Physics$$c2014
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000186115 520__ $$aThe morphology and the quantitative composition of the Fe-Si interface layer forming at each Fe layer of a (Fe/Si)3 multilayer have been determined by means of conversion electron Mössbauer spectroscopy (CEMS) and high-resolution transmission electron microscopy (HRTEM). For the CEMS measurements, each layer was selected by depositing the Mössbauer active 57Fe isotope with 95% enrichment. Samples with Fe layers of nominal thickness dFe  = 2.6 nm and Si spacers of dSi  = 1.5 nm were prepared by thermal evaporation onto a GaAs(001) substrate with an intermediate Ag(001) buffer layer. HRTEM images showed that Si layers grow amorphous and the epitaxial growth of the Fe is good only for the first deposited layer. The CEMS spectra show that at all Fe/Si and Si/Fe interfaces a paramagnetic c-Fe1− x Si phase is formed, which contains 16% of the nominal Fe deposited in the Fe layer. The bottom Fe layer, which is in contact with the Ag buffer, also contains α-Fe and an Fe1− x Si x alloy that cannot be attributed to a single phase. In contrast, the other two layers only comprise an Fe1− x Si x alloy with a Si concentration of ≃0.15, but no α-Fe.
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000186115 7001_ $$0P:(DE-HGF)0$$aRubín, J.$$b1
000186115 7001_ $$0P:(DE-HGF)0$$aMagén, C.$$b2
000186115 7001_ $$0P:(DE-Juel1)130582$$aBürgler, Daniel$$b3$$ufzj
000186115 7001_ $$0P:(DE-HGF)0$$aBartolomé, J.$$b4
000186115 773__ $$0PERI:(DE-600)1476463-5$$a10.1063/1.4887522$$gVol. 116, no. 2, p. 023907 -$$n2$$p023907 $$tJournal of applied physics$$v116$$x1089-7550$$y2014
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000186115 9132_ $$0G:(DE-HGF)POF3-522$$1G:(DE-HGF)POF3-520$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Spin-Based Phenomena$$x0
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