RSS 1.0Physics
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Physics (Scholarly Publications)
Physics (Scholarly Publications)
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A general strategy for hybrid thin film fabrication and transfer onto arbitrary substrates
(2014)The development of thin film-based structures/devices often requires thin films to be transferred onto arbitrary substrates/surfaces. Controllable and non-destructive transfer method, although highly desired, remains ... -
Nonlinear optical propagation in a tandem structure comprising nonlinear absorption and scattering materials
(2014)Laser propagation in a tandem structure comprising carbon nanotubes and phthalocyanines is studied by Z-scan method. Due to the different mechanisms of the two materials, the laser beam can be attenuated with different ... -
Tunable effective nonlinear refractive index of graphene dispersions during the distortion of spatial self-phase modulation
(2014)Spatial self-phase modulation (SSPM) was observed directly when a focused He-Ne laser beam at 633 nm went through liquid-phase-exfoliated graphene dispersions. The diffraction pattern of SSPM was found to be distorted ... -
Investigation on the origin of the magnetic moment of BiFeO3 thin films by advanced x-ray characterizations
(2006)Single phase 001 -oriented BiFeO 3 BFO thin films grown by pulsed laser deposition can only be obtained in a narrow window of deposition pressure and temperature and have a low magnetic moment. Out of ... -
Magnetism of (Zn,Co)O thin films probed by x-ray absorption spectroscopies
(2008)We report on the electronic and magnetic properties of Co-doped ZnO thin films investigated by x-ray absorption spectroscopies and element selective magnetometry. For a low Co concentration (around 5%), we evidence a ... -
Nanometer scale mapping of cobalt in Al-doped ferromagnetic Zn 0.7Co0.3O thin film
(2006)There has been a renewed interest in zinc oxide in the materials science community after it was shown to be ferromagnetic when doped with cobalt. However, it has remained difficult to tell whether the origin of the ... -
High spin polarization in epitaxial films of ferrimagnetic Mn3Ga
(2011)Ferrimagnetic Mn3Ga exhibits a unique combination of low saturation magnetization (Ms=0.11 MA m−1) and high perpendicular anisotropy with a uniaxial anisotropy constant of Ku = 0.89 MJ m−3. Epitaxial c-axis films exhibit ... -
Effect of Catalyst Diameter on Vapour-Liquid-Solid Growth of GaAs Nanowires
(2014)GaAs nanowires were grown on (111)B GaAs substrates using the vapour-liquid-solid mechanism. The Au/Pt nanodots used to catalyse wire growth were defined lithographically and had varying diameter and separation. An in-depth ... -
Exploring the coordination chemistry of bifunctional organoarsonate ligands: Syntheses and characterisation of coordination polymers that contain 4-(1,2,4-triazol-4-yl)phenylarsonic acid
(2014)This account describes the coordination chemistry of a novel bifunctional arsonic acid ligand, 4-(1,2,4-triazol-4-yl)phenylarsonic acid (H2TPAA) that contains a triazole group. Hydrothermal reactions of transition metal ... -
A facile "bottom-up" approach to prepare free-standing nano-films based on manganese coordination clusters
(2013)We present herein a novel method to prepare free-standing Dried Foam Films (DFFs) whereby individual polynuclear manganese complexes cover quantitatively the holes of micro-grids; the fabricated, homogeneous films have a ... -
The benefit of the European User Community from transnational access to national radiation facilities
(2014)Transnational access (TNA) to national radiation sources is presently provided via programmes of the European Commission by BIOSTRUCT-X and CALIPSO with a major benefit for scientists from European countries. Entirely based ... -
Nitrogen-doped pyrolytic carbon films as highly electrochemically active electrodes.
(2013)Nitrogen-doped Pyrolytic Carbon (N-PyC) films were employed as an electrode material in electrochemical applications. PyC was grown by via non-catalysed chemical vapour deposition and subsequently functionalised via exposure ... -
Soft x-ray spectroscopy study of the element and orbital contributions to the electronic structure of copper hexadecafluoro-phthalocyanine
(2010)The electronic structure of copper hexadecafluorophthalocyanine (F16 CuPc) has been measured using soft x-ray emission spectroscopy and x-ray absorption spectroscopy at the C, N, and FK edges. Our element- and orbital-specific ... -
Resonant Soft X-Ray Inelastic Scattering and Soft X-Ray Emission Study of the Electronic Structure of alpha-MoO3
(2009)The electronic structure of quasi-low-dimensional solids is a topic of enduring interest due to the complex many-body interactions that exist in such materials and their resulting exotic physical properties. A well ... -
Conductance enhancement due to interface magnons in electron-beam evaporated MgO magnetic tunnel junctions with CoFeB free layer deposited at different pressure
(2014)Electron-beam evaporated MgO-based magnetic tunnel junctions have been fabricated with the CoFeB free layer deposited at Ar pressure from 1 to 4 mTorr, and their tunneling process has been studied as a function of ... -
Perpendicular exchange bias effect in sputter-deposited CoFe/IrMn bilayers
(2014)CoFe/IrMn bilayers with perpendicular magneti zation for various IrMn layer thicknesses exhibit unusual two-step hysteresis loops with both posi tive and negative loop shifts. Observed at room temperature in the as-grown ... -
Diameter-modulated ferromagnetic CoFe nanowires
(2013)Highly ordered nanoporous anodic aluminium oxide templates with uniform or periodically modulated pore diameters have been fabricated by the hard-pulse anodization technique. Straight and diameter-modulated CoFe nanowires ... -
The zero-magnetization Heusler ferrimagnet
(2013)An unusual zero-moment half-metallic state has been predicted in stoichiometric Heusler compounds with 24 valence electrons, where, unlike an antiferromagnet, the two sublattices are chemically or crystallographically ... -
Analysis of liquid metal foams through X-ray radioscopy and microgravity experiments
(2014)Complex liquid structures such as metallic foams were produced in a furnace that allowed in situ X-ray monitoring of the evolution of the structure and distribution of the liquid in the foam. The experiments were carried ... -
Theoretical analysis of the performance of a foam fractionation column
(2014)A model system for theory and experiment which is relevant to foam fractionation consists of a column of foam moving through an inverted U-tube between two pools of surfactant solution. The foam drainage equation is used ...