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Now showing items 1421-1430 of 2111
Bulk defects in graphite observed with a scanning tunnelling microscope
(Elsevier, 1998)
Scanning tunnelling microscopy (STM) has been used to observe a misorientation of a graphite layer that is buried several layers below the surface. A nanoscale periodic pattern superimposed on the atomic graphite lattice ...
Photoluminescence study of basal plane stacking faults in ZnO nanowires
(2014)
We have investigated the photoluminescence (PL) of ZnO nanowires (NWs) containing a high density ($1 106 cm 1) of basal plane stacking faults (BSFs). It was observed that the BSFs result in a specific PL peak at $3.329 eV ...
First-Principles Prediction of Metal-Free Magnetism and Intrinsic Half-Metallicity in Graphitic Carbon Nitride
(2012)
Transition metal-free magnetism and half-metallicity recently has been the subject of intense research activity due to its potential in spintronics application. Here we, for the first time, demonstrate via density functional ...
Influence of miscut on the anisotropic magnetoresistance of magnetite
(American Physical Society, 2009)
We present the comparative measurements of the angular dependence of the anisotropic magnetoresistance (AMR) of magnetite (Fe3O4) films on MgO(001) nonvicinal and vicinal substrates (2.86? miscut along the 100 direction). ...
Interface properties of Fe3O4/MgO and surface studies of Fe3O4(110)
(Trinity College (Dublin, Ireland). School of Physics, 2006)
The research project described in this Ph.D. thesis can be divided into
two parts. The first, consisting in the description of a new instrument, the low
temperature tunneling device (LTTD), designed and built in order to ...
Winds of Planet Hosting Stars
(2015)
The field of exoplanetary science is one of the most rapidly growing areas of
astrophysical research. As more planets are discovered around other stars, new techniques
have been developed that have allowed ...
Rheological and local fluid dynamics in foams
(Trinity College (Dublin, Ireland). School of Physics, 2005)
This thesis explores the physics of foams, particularly those that are wet (i.e. have a high
liquid fraction). The properties which are measured here relate to structure, drainage and
rheology. We have performed the first ...
A Bcool survey of the magnetic fields of planet-hosting solar-type stars
(2017)
We present a spectropolarimetric snapshot survey of solar-type planet hosting stars. In addition to 14 planet-hosting stars observed as part of the BCool magnetic snapshot survey, we obtained magnetic observations of a ...
Magnetic Properties of Ultrathin Magnetite Films Grown by Molecular Beam Epitaxy
(IEEE-INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS INC, 2008)
Magnetic properties as a function of film thickness (2-55 nm) for magnetite (Fe3O4) thin films grown on MgO (100) substrates show that the small thickness films (les 5 nm) are ferromagnetic and possess magnetization values ...