Conversion Electron Mössbauer Spectroscopy Study of Epitaxialβ-FeSi2Grown by Molecular Beam Epitaxy

Mechanical alloying of Fe–Si and milling of α- and β-FeSi2 bulk phases

“…Other components appear for longer milling time with higher relative intensities. Their hyperfine parameters are in good agreement with literature values published earlier published values [5,6] for amorphous FeSi 2 and [7,8] for -FeSi. At longer milling period, the relative intensity of ␣-FeSi 2 further increased.…”

Magnetism in nanoparticles of semiconducting FeSi2

“…The b-structure contains two non-equivalent Fe sites of equal occupation, whereas the a-structure is developed from the b-structure by the formation of Fe vacancies [9]. Previous work [10,11] showed that the distortions of the Si cubes are sensitive to the preparation methods as indicated by the different QS values reported from b-FeSi 2 grown by molecular beam epitaxy and from powdered solid state reaction material. The QS values for the two different Fe sites were reported at À 0.315 and 0.525 mm/s in the epitaxial grown film [10], and at 0.41 and 0.43 mm/s in the powdered material [11].…”

STM/STS Studies of Self-Organized Growth of Iron Silicide Nanocrystals on Vicinal Si(111) Surface

“…Addi ti onal l y the i m ages of several surf ace ato ms of crysta ll i te are m uch bri ghter tha n the others. They correspond to the ato ms, whi ch are vi sibl e as \ hi gher" ones i n to p ogra phy i n Fi g. 6. Appro xi m atel y 25% of surf ace atom s of i ro n sil i cide crysta l li te di splay such a pro perty .…”

“…Co nsta nt current to pogra phy , simulta neously recorded current maps of the sam e area at vari ous bi ases and I À V as well as dI = d V chara cteri sti cs, measured at di˜erent sites of the surf ace are depi cted i n Fi g. 9a{ d. In to p ogra phi c i m age (Fi g. 9a) the bri ght verti cal stri p on the l eft side represents a part of the elo ngated i ro n sil i cide crysta l l ite shown i n Fi g. 6. V ery well reconstructe d 7 È 7 surf ace of the ba re Si i s clearl y seen i n the ba ckg round.…”