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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bando, Y.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2011Asymmetric tungsten oxide nanobrushes via oriented attachment and Ostwald ripeningcitations
- 2009Inhomogeneous Cr distribution and superparamagnetic behavior in magnetic semiconductor (Zn,Cr)Tecitations
- 2007Correlation between ferromagnetism and cluster formation in (Zn,Cr)Te co-doped with charge impurities
- 2006Atomic structures of iron-based single-crystalline nanowires crystallized inside multi-walled carbon nanotubes as revealed by analytical electron microscopycitations
- 2006In situ electrical probing and bias-mediated manipulation of dielectric nanotubes in a high-resolution transmission electron microscopecitations
- 2005Production and characterization of single-crystal FeCo nanowires inside carbon nanotubescitations
- 2004Phases and crystallization of encapsulated cobalt nanorods inside BN nanotubescitations
- 2003Self-catalyst growth and optical properties of novel SnO2 fishbone-like nanoribbonscitations
- 2003The tubular conical helix of graphitic boron nitridecitations
- 2003Structure, transport and field-emission properties of compound nanotubescitations
- 2003SiO2-sheathed InS nanowires and SiO2 nanotubescitations
- 2003MoS2 nanoflowers and their field-emission propertiescitations
- 2003Filling boron nitride nanotubes with metalscitations
- 2002Nanocompositescitations
- 2002Field emission from individual B-C-N nanotube ropecitations
- 2001Synthesis, HRTEM and electron diffraction studies of B/N-doped, C and BN nanotubescitations
- 2001Insulating 'nanocables'citations
- 2001Unique morphologies of boron nitride nanotubescitations
- 2000Large-scale synthesis and HRTEM analysis of single-walled B- and N-doped carbon nanotube bundlescitations
- 2000Ropes of BN multi-walled nanotubescitations
- 2000MoO3 -promoted synthesis of multi-walled BN nanotubes from C nanotube templatescitations
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article
Atomic structures of iron-based single-crystalline nanowires crystallized inside multi-walled carbon nanotubes as revealed by analytical electron microscopy
Abstract
<p>Atomic structures of single-crystalline iron-based nanowires crystallized inside multi-walled carbon nanotubes during pyrolysis on silicon substrates with ferrocene as a precursor were analyzed using high-resolution analytical transmission electron microscopy and electron diffraction. Standard crystal lattices, namely body-centered cubic (bcc) α-Fe, face-centered cubic (fcc) γ-Fe and orthorhombic cementite Fe<sub>3</sub>C, were all found to form inside the nanotubes. A fraction of α-Fe nanowires, thermodynamically favorable at room temperature, was found to be dominant. Both bcc and fcc nanowires display a wide variety of lattice planes being parallel to the nanotube walls, with none of the orientations being preferable. The minor fraction of the nanowires had unidentified long-period crystal lattices with doubled or tripled periodicities as compared to those found in the standard cubic iron phases. The crystal matching of these unusual structures to stable orthorhombic Fe<sub>3</sub>C or less stable iron carbides, e.g., Fe<sub>5</sub>C<sub>2</sub>, Fe<sub>7</sub>C<sub>3</sub>, failed. The non-conventional phases were tentatively assigned to rarely seen silicon-doped octahedral iron carbides. Both long-period and standard cementite nanowires exhibited well-defined transient zones in the vicinity of nanowire-tube shell interfaces, where perfectly ordered carbide lattice fringes disappeared. The results suggest the non-existence of metastable equilibrium in the nanoscale Fe-C system between carbide and graphite phases during iron crystallization inside graphitic tubular channels.</p>