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“Phase formation in intermixed NiGe thin films : influence of Ge content and low-temperature nucleation of hexagonal nickel germanides”. De Schutter B, Devulder W, Schrauwen A, van Stiphout K, Perkisas T, Bals S, Vantomme A, Detavernier C, Microelectronic engineering 120, 168 (2014). http://doi.org/10.1016/j.mee.2013.09.004
Abstract: In this study, we focus on phase formation in intermixed NiGe thin films as they represent a simplified model of the small intermixed interface layer that is believed to form upon deposition of Ni on Ge and where initial phase formation happens. A combinatorial sputter deposition technique was used to co-deposit a range of intermixed NiGe thin films with Ge concentrations varying between 0 and 50 at.%Ge in a single deposition on both Ge (100) and inert SiO2 substrates. In situ X-ray diffraction and transmission electron microscopy where used to study phase formation. In almost the entire composition range under investigation, crystalline phases where found to be present in the as-deposited films. Between 36 and 48 at.%Ge, high-temperature hexagonal nickel germanides were found to occur metastabily below 300 °C, both on SiO2 and Ge (100) substrates. For Ge concentrations in the range between 36 and 42 at.%, this hexagonal germanide phase was even found to be present at room temperature in the as-deposited films. The results obtained in this work could provide more insight in the phase sequence of a pure Ni film on Ge.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 1.806
Times cited: 9
DOI: 10.1016/j.mee.2013.09.004
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“Snake orbits in hybrid semiconductor/ferromagnetic devices”. Peeters FM, Reijniers J, Badalian SM, Vasilopoulos P, Microelectronic engineering 47, 405 (1999). http://doi.org/10.1016/S0167-9317(99)00245-2
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Engineering Management (ENM)
Impact Factor: 1.806
Times cited: 6
DOI: 10.1016/S0167-9317(99)00245-2
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“HfOx as RRAM material : first principles insights on the working principles”. Clima S, Govoreanu B, Jurczak M, Pourtois G, Microelectronic engineering 120, 13 (2014). http://doi.org/10.1016/j.mee.2013.08.002
Abstract: First-principles simulations were employed to gain atomistic insights on the working principles of amorphous HfO2 based Resistive Random Access Memory stack: the nature of the defect responsible for the switching between the High and Low Resistive States has been unambiguously identified to be the substoichiometric Hf sites (commonly called oxygen vacancy-V-O) and the kinetics of the process have been investigated through the study of O diffusion. Also the role of each material layer in the TiN/HfO2/Hf/TiN RRAM stack and the impact of the deposition techniques have been examined: metallic Hf sputtering is needed to provide an oxygen exchange layer that plays the role of defect buffer. TiN shall be a good defect barrier for O but a bad defect buffer layer. A possible scenario to explain the device degradation (switching failure) mechanism has been proposed – the relaxation of the metastable amorphous phase towards crystalline structure leads to denser, more structured cluster that can increase the defect migration barriers. (C) 2013 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 1.806
Times cited: 22
DOI: 10.1016/j.mee.2013.08.002
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“Towards CMOS-compatible single-walled carbon nanotube resonators”. Pathangi H, Cherman V, Khaled A, Sorée B, Groeseneken G, Witvrouw A, Microelectronic engineering 107, 219 (2013). http://doi.org/10.1016/j.mee.2012.06.007
Abstract: We report a totally CMOS-compatible fabrication technique to assemble horizontally suspended single-walled carbon nanotube (SWCNT) resonators. Individual SWCNTs are assembled in parallel at multiple sites by a technique called dielectrophoresis. The mechanical resonance frequencies of the suspended SWCNTs are in the range of 2035 MHz as determined from the piezoresistive response of the resonators during electrostatic actuation. The resistance of the suspended SWCNT either remains unchanged or increases or decreases significantly as a function of the actuation frequency. This can be explained by the effect the nanotube chirality has on the piezoresistive gauge factor.
Keywords: A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT)
Impact Factor: 1.806
Times cited: 6
DOI: 10.1016/j.mee.2012.06.007
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“Resistivity scaling in metallic thin films and nanowires due to grain boundary and surface roughness scattering”. Moors K, Sorée B, Magnus W, Microelectronic engineering 167, 37 (2017). http://doi.org/10.1016/J.MEE.2016.10.015
Abstract: A modeling approach, based on an analytical solution of the semiclassical multi-subband Boltzmann transport equation, is presented to study resistivity scaling in metallic thin films and nanowires due to grain boundary and surface roughness scattering. While taking into account the detailed statistical properties of grains, roughness and barrier material as well as the metallic band structure and quantum mechanical aspects of scattering and confinement, the model does not rely on phenomenological fitting parameters. (C) 2016 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Engineering sciences. Technology; Condensed Matter Theory (CMT)
Impact Factor: 1.806
Times cited: 6
DOI: 10.1016/J.MEE.2016.10.015
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“Material relaxation in chalcogenide OTS SELECTOR materials”. Clima S, Garbin D, Devulder W, Keukelier J, Opsomer K, Goux L, Kar GS, Pourtois G, Microelectronic engineering 215, 110996 (2019). http://doi.org/10.1016/J.MEE.2019.110996
Abstract: Nature of the mobility-gap states in amorphous Ge-rich Ge50Se50 was found to be related to homopolar Ge bonds in the chains/clusters of Ge atoms. Threshold switching material suffers Ge-Ge bond concentration drift during material ageing, which can explain the observed reliability of the aGe(50)Se(50) selector devices. Strong Ge-N bonds were introduced to alleviate the observed instability.
Keywords: A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 1.806
Times cited: 1
DOI: 10.1016/J.MEE.2019.110996
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“Compositionally induced phase transition in the Ca2MnGa1-xAlxO5 solid solutions: ordering of tetrahedral chains in brownmillerite structure”. Abakumov AM, Kalyuzhnaya AS, Rozova MG, Antipov EV, Hadermann J, Van Tendeloo G, Solid state sciences 7, 801 (2005). http://doi.org/10.1016/j.solidstatesciences.2005.01.020
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 38
DOI: 10.1016/j.solidstatesciences.2005.01.020
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“Ferroelectric phase transition in the whitlockite-type Ca9Fe(PO4)7, crystal structure of the paraelectric phase at 923 K”. Lazoryak BI, Morozov VA, Belik AA, Stefanovich SY, Grebenev VV, Leonidov IA, Mitberg EB, Davydov SA, Lebedev OI, Van Tendeloo G, Solid state sciences 6, 185 (2004). http://doi.org/10.1016/j.solidstatesciences.2003.12.007
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 41
DOI: 10.1016/j.solidstatesciences.2003.12.007
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“The layered manganate Sr4-xBaxMn3O10: synthesis, structural and magnetic properties”. Floros N, Hervieu M, Van Tendeloo G, Michel C, Maignan A, Raveau B, Solid state sciences 2, 1 (2000). http://doi.org/10.1016/S1293-2558(00)00115-1
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 29
DOI: 10.1016/S1293-2558(00)00115-1
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“Layered ordering of vacancies of lead iron phosphate Pb3Fe2(PO4)4”. Malakho AP, Morozov VA, Pokholok KV, Lazoryak BI, Van Tendeloo G, Solid state sciences 7, 397 (2005). http://doi.org/10.1016/j.solidstatesciences.2005.01.007
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 7
DOI: 10.1016/j.solidstatesciences.2005.01.007
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“Local structure of perovskite-based “Pb2Fe2O5””. Hadermann J, Abakumov AM, Nikolaev IV, Antipov EV, Van Tendeloo G, Solid state sciences 10, 382 (2008). http://doi.org/10.1016/j.solidstatesciences.2007.12.008
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 29
DOI: 10.1016/j.solidstatesciences.2007.12.008
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“Nanostructures in LuFe2O4+\delta”. Hervieu M, Damay F, Poienar M, Elkaim E, Rouquette J, Abakumov AM, Van Tendeloo G, Maignan A, Martin C, Solid state sciences 23, 26 (2013). http://doi.org/10.1016/j.solidstatesciences.2013.05.015
Abstract: A LuFe2O4+delta sample, previously characterized by X-ray synchrotron and neutron diffraction, has been studied by electron microscopy techniques, in order to get a precise description of its micro- and nanostructures at room temperature. The X-ray synchrotron data vs. temperature show that the monoclinic distortion is associated with the charge ordering; this distortion results in elongated twinning domains, which enhance the complexity of the microstructural state at room temperature. The structural modulation associated with oxygen excess is observed in large domains inside a non modulated matrix, in contrast with the modulations associated with the charge ordering of the Fe2+ and Fe3+ species, which are mostly short-range. The investigation of the nature and density of defects in the sample shows that they are nano-scaled, preserving the regularity of the layer stacking mode, and limited to the formation of one- or two-units large stacking faults, associated with gliding mechanisms. Based on these observations, an original description of the LuFe2O4 ferrite structure, through puckered [LuO4](infinity) sandwiching [Fe-2](infinity) layers, is proposed. (C) 2013 Elsevier Masson SAS. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 7
DOI: 10.1016/j.solidstatesciences.2013.05.015
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“New molybdenum oxides Ag4M2Zr(MoO4)6 (M=Mg, Mn, Co, Zn) with a channel-like structure”. Khobrakova ET, Morozov VA, Khasanov SS, Tsyrenova GD, Khaikina EG, Lebedev OI, Van Tendeloo G, Lazoryak BI, Solid state sciences 7, 1397 (2005). http://doi.org/10.1016/j.solidstatesciences.2005.08.010
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 9
DOI: 10.1016/j.solidstatesciences.2005.08.010
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“Order and twining in Sb2W0.75Mo0.25O6”. Enjalbert R, Galy J, Castro A, Lidin S, Withers R, Van Tendeloo G, Solid state sciences 5, 721 (2003). http://doi.org/10.1016/S1293-2558(03)00093-1
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 3
DOI: 10.1016/S1293-2558(03)00093-1
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“Structure and microstructure of nanoscale mesoporous silica spheres”. Lebedev OI, Van Tendeloo G, Collart O, Cool P, Vansant EF, Solid state sciences 6, 489 (2004). http://doi.org/10.1016/j.solidstatesciences.2004.01.013
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA)
Impact Factor: 1.811
Times cited: 42
DOI: 10.1016/j.solidstatesciences.2004.01.013
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“Synthesis and investigation of novel Mn-based oxyfluoride Sr2Mn2O5-xF1+x”. Lobanov MV, Abakumov AM, Sidorova AV, Rozova MG, D'yachenko OG, Antipov EV, Hadermann J, Van Tendeloo G, Solid state sciences 4, 19 (2002). http://doi.org/10.1016/S1293-2558(01)01209-2
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 21
DOI: 10.1016/S1293-2558(01)01209-2
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“Synthesis and structural investigations on the new Sr1.32Mn0.83Cu0.17O3 compound”. Abakumov AM, Mironov AV, Govorov VA, Lobanov MV, Rozova MG, Antipov EV, Lebedev OI, Van Tendeloo G, Solid state sciences 5, 1117 (2003). http://doi.org/10.1016/S1293-2558(03)00141-9
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 8
DOI: 10.1016/S1293-2558(03)00141-9
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“Synthesis and structural mechanisms of the 2201-type ferrites and polytypes: Fe2(Sr2-xAx)FeO6.5-\delta/2 (A = Ba, La, Tl, Pb and Bi)”. Lepoittevin C, Malo S, Van Tendeloo G, Hervieu M, Solid state sciences 11, 595 (2009). http://doi.org/10.1016/j.solidstatesciences.2008.12.005
Abstract: The Fe2(Sr2 − xAx)FeO6.5 − ä/2 systems have been investigated, by doping the iron rich 2201-type parent structure with Ba2+, La3+ and 5d10 post-transition cations. The syntheses have been carried out up to the limit of the 2201-type solid solutions, in order to test the role of the double iron layer Fe2O2.5 − ä/2. The localisation of the charge carriers in these compounds is consistent with their strong antiferro-magnetism. The investigation was then carried out in the transition part of the diagram up to the formation of stable phases. The study of structural mechanisms was carried using high resolution electron microscopy (transmission and scanning transmission), electron diffraction and energy dispersive spectroscopy. Different non-stoichiometry mechanisms are observed, depending on the electronic structure and chemical properties of the doping elements. The specific behavior of the modulated double iron layer is discussed.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 3
DOI: 10.1016/j.solidstatesciences.2008.12.005
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“Synthesis and structure of Sr2MnGaO5+\delta brownmillerites with variable oxygen content”. Abakumov AM, Rozova MG, Alekseeva AM, Kovba ML, Antipov EV, Lebedev OI, Van Tendeloo G, Solid state sciences 5, 871 (2003). http://doi.org/10.1016/S1293-2558(03)00112-2
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 12
DOI: 10.1016/S1293-2558(03)00112-2
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“Zeotile-2: a microporous analogue of MCM-48”. Kremer SPB, Kirschhock CEA, Aerts A, Aerts CA, Houthoofd KJ, Grobet PJ, Jacobs PA, Lebedev OI, Van Tendeloo G, Martens JA, Solid state sciences 7, 861 (2005). http://doi.org/10.1016/j.solidstatesciences.2005.01.021
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 10
DOI: 10.1016/j.solidstatesciences.2005.01.021
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“Synthesis and structural characterization of a novel Sillén &ndash, Aurivillius bismuth oxyhalide, PbBi3VO7.5Cl, and its derivatives”. Charkin DO, Plokhikh IV, Kazakov SM, Kalmykov SN, Akinfiev VS, Gorbachev AV, Batuk M, Abakumov AM, Teterin YA, Maslakov KI, Teterin AY, Ivanov KE, Solid state sciences 75, 27 (2018). http://doi.org/10.1016/j.solidstatesciences.2017.11.006
Abstract: A new Sillen – Aurivillius family of layered bismuth oxyhalides has been designed and successfully constructed on the basis of PbBiO2X(X = halogen) synthetic perites and g-form of Bi2VO5.5 solid elec- trolyte. This demonstrates, for the first time, the ability of the latter to serve as a building block in construction of mixed-layer structures. The parent compound PbBi3VO7.5-dCl (d = 0.05) has been investigated by powder XRD, TEM, XPS methods and magnetic susceptibility measurements. An unexpected but important condition for the formation of the mixed-layer structure is partial (ca. 5%) reduction of VV into VIV which probably suppresses competitive formation of apatite-like Pb – Bi vanadates. This reduction also stabilizes the g polymorphic form of Bi2VO5.5 not only in the intergrowth structure, but in Bi2V1-xMxO5.5-y (M – Nb, Sb) solid solutions.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.811
Times cited: 1
DOI: 10.1016/j.solidstatesciences.2017.11.006
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“Bond switching regimes in nickel and nickel-carbon nanoclusters”. Neyts E, Shibuta Y, Bogaerts A, Chemical physics letters 488, 202 (2010). http://doi.org/10.1016/j.cplett.2010.02.024
Abstract: Understanding the fundamental dynamics in carbon nanotube (CNT) catalysts is of primary importance to understand CNT nucleation. This Letter reports on calculated bond switching (BS) rates in pure and carbon containing nickel nanoclusters. The rates are analyzed in terms of their temperature dependent spatial distribution and the mobility of the cluster atoms. The BS mechanism is found to change from vibrational to diffusional at around 900 K, with a corresponding strong increase in activation energy. Furthermore, the BS activation energy is observed to decrease as the carbon content in the cluster increases, resulting in an effective liquification of the cluster.
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 1.815
Times cited: 20
DOI: 10.1016/j.cplett.2010.02.024
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“Bulk production of multi-wall carbon nanotube bundles on sol-gel prepared catalyst”. Ning Y, Zhang X, Wang Y, Sun Y, Shen L, Yang X, Van Tendeloo G, Chemical physics letters 366, 555 (2002). http://doi.org/10.1016/S0009-2614(02)01647-0
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 41
DOI: 10.1016/S0009-2614(02)01647-0
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“Characterization of single-wall carbon nanotubes produced by CCVD method”. Colomer J-F, Benoit J-M, Stephan C, Lefrant S, Van Tendeloo G, Nagy JB, Chemical physics letters 345, 11 (2001). http://doi.org/10.1016/S0009-2614(01)00841-7
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 45
DOI: 10.1016/S0009-2614(01)00841-7
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“Control of the outer diameter of thin carbon nanotubes synthesized by catalytic decomposition of hydrocarbons”. Willems I, Konya Z, Colomer JF, Van Tendeloo G, Nagaraju N, Fonseca A, Nagy JB, Chemical physics letters 317, 71 (2000). http://doi.org/10.1016/S0009-2614(99)01300-7
Abstract: Multi-wall carbon nanotubes have been produced by the catalytic decomposition of acetylene. Go-Mo, Co-V and Co-Fe mixtures supported either on zeolite or corundum alumina were used as catalysts. When Fe or V is added to Co, the carbon deposit increases. The nanotubes were characterized by both low and high resolution TEM. From histograms representing the outer diameter distributions, it is clear that the outer diameter of the nanotubes can be controlled by choosing the appropriate catalyst. (C) 2000 Elsevier Science B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 130
DOI: 10.1016/S0009-2614(99)01300-7
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“Controlling the diameters in large-scale synthesis of single-walled carbon nanotubes by catalytic decomposition of CH4”. Li Y, Zhang X, Shen L, Luo J, Tao X, Liu F, Xu G, Wang Y, Geise HJ, Van Tendeloo G, Chemical physics letters 398, 276 (2004). http://doi.org/10.1016/j.cplett.2004.09.068
Abstract: High-quality single-walled carbon nanotubes (SWNTs) are synthesized in gram amount on Fe-Mo/MgO catalysts by catalytic decomposition of CH4 in H-2 or N-2. Raman data reveal that the as-prepared SATNTs have a diameter of about 0.74-1.29 nm. It is found that the diameter of the as-prepared SWNTs can be controlled mainly by adjusting the molar ratio of Fe-Mo versus the MgO support. Several other factors that potentially influence the growth of SWNTs have been studied in detail. The experimental results show that the nature of the catalyst determines the diameter of the as-prepared SWNTs. (C) 2004 Elsevier B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 45
DOI: 10.1016/j.cplett.2004.09.068
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“Decorating carbon nanotubes with nickel nanoparticles”. Bittencourt C, Felten A, Ghijsen J, Pireaux J-J, Drube W, Erni R, Van Tendeloo G, Chemical physics letters 436, 368 (2007). http://doi.org/10.1016/j.cplett.2007.01.065
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 78
DOI: 10.1016/j.cplett.2007.01.065
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“Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method”. Colomer JF, Stephan C, Lefrant S, Van Tendeloo G, Willems I, Konya Z, Fonseca A, Laurent C, Nagy JB, Chemical physics letters 317, 83 (2000). http://doi.org/10.1016/S0009-2614(99)01338-X
Abstract: The large-scale production of single-wall carbon nanotubes (SWNTs) is reported. Large quantities of SWNTs can be synthesised by catalytic decomposition of methane over well-dispersed metal particles supported on MgO at 1000 degrees C. The thus produced SWNTs can be separated easily from the support by a simple acidic treatment to obtain a product with high yields (70-80%) of SWNTs. Because the typical synthesis time is 10 min, 1 g of SWNTs can be synthesised per day by this method. The SWNTs are characterized by high-resolution transmission electron microscopy and by Raman spectroscopy, showing the quality and the quantity of products. (C) 2000 Elsevier Science B.V. All rights reserved.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 344
DOI: 10.1016/S0009-2614(99)01338-X
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“Molecular dynamics simulation of oxide thin film growth: importance of the inter-atomic interaction potential”. Georgieva V, Todorov IT, Bogaerts A, Chemical physics letters 485, 315 (2010). http://doi.org/10.1016/j.cplett.2009.12.067
Abstract: A molecular dynamics (MD) study of MgxAlyOz thin films grown by magnetron sputtering is presented using an ionic model and comparing two potential sets with formal and partial charges. The applicability of the model and the reliability of the potential sets for the simulation of thin film growth are discussed. The formal charge potential set was found to reproduce the thin film structure in close agreement with the structure of the experimentally grown thin films. Graphical abstract A molecular dynamics study of growth of MgxAlyOz thin films is presented using an ionic model and comparing two potential sets with formal and partial charges. The simulation results with the formal charge potential set showed a transition in the film from a crystalline to an amorphous structure, when the Mg metal content decreases below 50% in very close agreement with the structure of the experimentally deposited films.
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 1.815
Times cited: 16
DOI: 10.1016/j.cplett.2009.12.067
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“NEXAFS spectromicroscopy of suspended carbon nanohorns”. Bittencourt C, Ke X, Van Tendeloo G, Tagmatarchis N, Guttmann P, Chemical physics letters 587, 85 (2013). http://doi.org/10.1016/j.cplett.2013.09.034
Abstract: We demonstrate that near-edge X-ray-absorption fine-structure spectroscopy combined with full-field transmission X-ray microscopy can be used to study the electronic structure of suspended carbon nanohorns. Based on reports of electronic structure calculations additional spectral features observed in the π region of the NEXAFS spectrum recorded on the carbon nanohorns were associated to the presence of the pentagonal rings and the folding of the graphene sheet.
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.815
Times cited: 4
DOI: 10.1016/j.cplett.2013.09.034
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