Journal ArticleDOI
Growth of β-FeSi2 films via noble-gas ion-beam mixing of Fe/Si bilayers
TLDR
A detailed study of the formation of β-FeSi2 films by ion-beam mixing of Fe/Si bilayers with noble gas ions is presented in this paper, where the structures were analyzed by Rutherford backscattering spectroscopy, x-ray diffraction, conversion electron Mossbauer spectrograph, elastic recoil detection analysis, cross-section high resolution transmission electron microscopy, and energy dispersive x-rays spectroscope.Abstract:
A detailed study of the formation of β-FeSi2 films by ion-beam mixing of Fe/Si bilayers with noble gas ions is presented. Fe films of 35–50 nm deposited on Si (100) were irradiated with 80–700 keV Ar, Kr, or Xe ions in a wide temperature interval, from room temperature to 600 °C. The structures were analyzed by Rutherford backscattering spectroscopy, x-ray diffraction, conversion electron Mossbauer spectroscopy, elastic recoil detection analysis, cross-section high resolution transmission electron microscopy, and energy dispersive x-ray spectroscopy. Already after Xe irradiation at 300 °C the whole Fe layer is transformed to a mixture of Fe3Si, e-FeSi, and β-FeSi2 phases. At 400–450 °C, a unique, layer by layer growth of β-FeSi2 starting from the surface was found. A full transformation of 35 nm Fe on Si to a 105 nm β-FeSi2 layer was achieved by irradiation with 205 keV Xe to 2×1016 ions/cm2, at a temperature of 600 °C. The fully ion-beam grown layers exhibit a pronounced surface roughness, but a sharp in...read more
Citations
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Journal ArticleDOI
Swift ion irradiations of natFe/57Fe/Si trilayers
V. Milinović,Klaus-Peter Lieb,Pratap K. Sahoo,Peter Schaaf,Kun Zhang,S. Klaumünzer,M. Weisheit +6 more
TL;DR: In this article, the authors report changes in magnetism and microstructure when implanting, at 92 or 300 K, up to 5 x 10 15 Au 26+ -ions cm -2 of 350 MeV into nat Fe(45 nm)/ 57 Fe(20 nm)/Si trilayers.
Journal ArticleDOI
The effect of Mn and Al dopants on the β-FeSi2 stabilization by a two-step route: Mechanical alloying and annealing
Judith Desimoni,Judith Desimoni,J. A. Martínez,J. A. Martínez,S.M. Cotes,S.M. Cotes,J. Runco,Marcela Andrea Taylor,Marcela Andrea Taylor +8 more
TL;DR: Al and Mn dopant influence on β-FeSi 2 phase formation was studied using X-ray diffraction and Mossbauer spectroscopy in this paper, which indicated that the addition of Al improved the stabilization of β -FeSi2 phase, reducing the amount of ǫ −FeSi from 20% to 6%.
Journal ArticleDOI
Structural and optical properties of β-FeSi2 layers grown by ion beam mixing
Nataša Bibić,S. Dhar,K. P. Lieb,Momir Milosavljević,Peter Schaaf,Y. L. Huang,Michael Seibt,Kevin P. Homewood,C.N McKinty +8 more
TL;DR: In this paper, structural and optical properties of β-FeSi 2 layers produced by direct ion beam mixing of Fe/Si bilayers with Xe ions were analyzed by using Rutherford backscattering spectroscopy, X-ray diffraction, conversion electron Mossbauer spectrography, high resolution transmission electron microscopy, and photo-absorption.
Journal ArticleDOI
Controllable growth of α- and β-FeSi2 thin films on Si(100) by facing-target sputtering
TL;DR: In this article, the role of the buffer layer on the formation of β- and α-FeSi2 thin film was discussed, and the composition of the β-Si2 film can be tuned from Fe enrichment to Si enrichment by altering the radio-frequency input power applied on the Si or/and Fe target.
Journal ArticleDOI
Mössbauer and magnetic study of interface structure of Fe/SixFe1−x multilayers with antiferromagnetic interlayer coupling
TL;DR: In this paper, the structural and magnetic properties of Fe/Si x Fe 1−x multilayers have been studied by the conversion electron Mossbauer spectroscopy (CEMS) and magnetic measurements.
References
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Book
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Energy calibration of the 500 kV heavy ion implanter ionas
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