Self-Assembled Magnetic Nanohead-FeSi Nanowire Epitaxial Heterojunctions by Chemical Vapor Deposition

Orientation-Dependent Room-Temperature Ferromagnetism of FeSi Nanowires and Applications in Nonvolatile Memory Devices

“…The existing magnetic domain and localized surface dangling bond spins may enhance the performance of the magnetic coupling behavior more significantly. The investigation by Liang et al focused on the epitaxial heterojunctions and magnetic properties of the Fe 3 O 4 nanoparticles (NPs) capped on FeSi nanowires (NWs) with the growth axis of [110]. The epitaxial relationships of heterojunctions and specific ferromagnetism behaviors were also investigated.…”

Si-Based Magnetic Semiconductors

“…Nanostructures of transition metal silicides are being considered for spintronics applications for the same reasons expressed above for thin film geometries; they offer flexibility since both semiconducting and metallic magnetic ground states can be accessed without the complications of nonequilibrium growth conditions and related tendencies for second-phase nucleation and dopant clustering. A large number of transition metal monosilicide nanowires have been successfully grown including FeSi [160,161], CoSi [162,163], Fe 1Àx Co x Si [164,165], MnSi [166,167], NiSi, PtSi [168], and TiSi [168]. This list of materials is supplemented by a number of other transition metal silicide phases that have been synthesized in nanowire form including Ni 2 Si [169] [172,173]; TaSi 2 [168]; and Ti 5 Si 3 [168].…”

“…Recently, FeSi nanowires with Fe 3 O 4 nanoheads were created via a simple CVD technique making use of gold as a catalyst [161]. Here gold-coated Si (100) surfaces were placed inside a tube furnace held at 1,100 C and exposed to Fe 2 O 3 vapor carried by a mixture of Ar and H 2 gas.…”

Visible and IR photoluminescence of c-FeSi@a–Si core–shell nano-fibres produced by vapour transport

“…One-dimensional (1-D) inorganic nanowire materials have enjoyed prominent attention in the research community in the past decade because they can be rationally and controllably synthesized and have found many promising applications in electronics, photonics, spintro-nics, sensing, photovoltaics and thermoelectrics. These nanostructures exhibit fascinating physical and chemical properties distinct from those of bulk or thin film materials [1][2][3][4]. Experimental conditions such as reaction time and temperature play an important role in the morphology of the reaction products.…”

“…Experimental conditions such as reaction time and temperature play an important role in the morphology of the reaction products. Unique morphologies of FeSi nanostructures such as nanocombs [4], nanoflowers [5] and hyper-branched nanowires [5] have been reported. For the synthesis of 1-D nanowires, metal-catalyzed chemical vapour deposition (CVD) has proven to be one of the most successful growth methods as it offers convenience compared to wet chemical methods.…”