Browsing School of Physics by Sponsor "European Commission"
Now showing items 21-40 of 40
-
Magnetic reversal and pinning in a perpendicular zero-moment half-metal
(2021)Compensated ferrimagnets are promising materials for fast spintronic applications based on domain-wall motion as they combine the favorable properties of ferromagnets and antiferromagnets. They inherit from antiferromagnets ... -
Neutron imaging of liquid-liquid systems containing paramagnetic salt solutions
(2019)The method of neutron imaging was adopted to map the concentration evolution of aqueous paramagnetic Gd(NO3)3 solutions. Magnetic manipulation of the paramagnetic liquid within a miscible nonmagnetic liquid is possible ... -
Non-equilibrium gas-phase nitrogenation
(IEEE, 1994)Non-equilibrium nitrogenation of transition-metal rich rare-earth intermetallics can be used to increase the nitrogen content beyond its equilibrium concentration. For example, nitrogenation of Sm2Fel7 using ammonia ... -
Nucleation field and energy product of aligned two-phase magnets - progress towards the '1 MJ/m3' magnet
(IEEE, 1993)Exchange hardening of nanostructured two-phase systems composed of an aligned hard phase and a soft phase with high magnetization is investigated using a micromagnetic approach which accounts for intereactions between the ... -
Prediction of large bias-dependent magnetoresistance in al l-oxide magnetic tunnel junctions with a ferroelectric barrier
(2011)All-oxide magnetic tunnel junctions (MTJs) incorporating functional materials as insulating barriers have the potential of becoming the founding technology for novel multifunctional devices. We investigate, by first-principles ... -
Production and processing of graphene and related materials
(IOP Publishing, 2020)We present an overview of the main techniques for production and processing of graphene and related materials (GRMs), as well as the key characterization procedures. We adopt a ‘hands-on’ approach, providing practical ... -
Quantised conductance in a contact between metallic oxide crystals
(American Physical Society, 1998)The conductance of a point contact between two crystals of metallic (La0.75Sr0.25)MnO3 shows steps as the contact is broken. A histogram of the conductance values observed in 60 breaks exhibits a series of sharp peaks at ... -
Quantized conductance in a contact between metallic oxide crystals
(American Physical Society, 1998)The conductance of a point contact between two crystals of metallic (La0.75Sr0.25)MnO3 shows steps as the contact is broken. A histogram of the conductance values observed in 60 breaks exhibits a series of sharp peaks at ... -
Single-pulse all-optical switching in amorphous DyxCo1-x and TbxCo1-x
(2022)Repeated uniform switching of the magnetization of thin films of ferrimagnetic amorphous Gdx(FeCo)1−x in response to single fast laser pulses is well established. Here, we report unusual toggle switching in thin films of ... -
Solar Magnetic Feature Detection and Tracking for Space Weather Monitoring
(2011)We present an automated system for detecting, tracking, and cataloging emerging active regions throughout their evolution and decay using SOHO Michelson Doppler Interferometer (MDI) magnetograms. The SolarMonitor Active ... -
Spectroscopic and Microscopic Characterisation of Liquid Phase Exfoliated 2D Materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)Since the experimental isolation of graphene nearly two decades ago, the research into two-dimensional materials has accelerated at a tremendous rate across a vast range of scientific and engineering fields. Liquid phase ... -
Spin scattering and spin-polarized hybrid interface states at a metal-organic interface
(2011)Spin scattering at the interface formed between metallic Fe and Cu-phthalocyanine molecules is investigated by spin-polarized scanning tunneling spectroscopy and spin-resolved photoemission. The results are interpreted ... -
Stability of Mn2RuxGa-based Multilayer Stacks, Gwenaël Atcheson, Katarzyna Siewierska, J. M. D. Coey, Karsten Rode, Plamen Stamenov
(2022)Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces ... -
Structural, magnetic and electronic properties of L21 -ordered Ru2-xMn1+xAl Heusler alloy thin films
(2023)The cubic Heusler alloy Ru2–xMn1+xAl is grown in thin film form on MgO and MgAl2O4 substrates. It is a highly spin-polarised ferrimagnetic metal, with weak magnetocrystalline anisotropy. Although structurally and chemically ... -
Transient Inhomogeneous Ionic Solutions -The Influence of the Magnetic Field Gradient
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Solutions of paramagnetic ions and their response to magnetic field gradients of permanent magnets were studied. Paramagnetic fluids confined by solid walls only develop internal flows in a magnetic field gradient when a ... -
Ultrafast Double Pulse All-Optical Reswitching of a Ferrimagnet
(2021)All-optical reswitching has been investigated in the half-metallic Heusler ferrimagnet Mn2Ru0.9Ga, where Mn atoms occupy two inequivalent sites in the XA-type structure. The effect of a second 200 fs, 800 nm laser pulse ... -
A variational pseudo-self-interaction correction approach: ab-initio description of correlated oxides and molecules
(2011)We present a fully variational generalization of the pseudo self-interaction correction (VPSIC) approach previously presented in two implementations based on plane-waves and atomic orbital basis set, known as PSIC and ASIC, ... -
Variational pseudo-self-interaction-corrected density functional approach to the ab initio description of correlated solids and molecules
(2011)We present a variational pseudo self-interaction correction density functional approach (VPSIC) to the ab initio theoretical description of correlated solids and molecules. The approach generalizes previous nonvariational ... -
Viscoelastic Polymer Nanocomposites for Strain Sensing Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)Strain sensors are a technology that have developed in parallel with the major milestones in material science over the last century. Most recently, the field of 2D materials has proven to have found a wide range of ... -
Whiskey-phase exfoliation: exfoliation and printing of nanosheets using Irish whiskey
(2019)Recent advances in the liquid-phase exfoliation (LPE) of layered materials have facilitated significant progress in the creation of functional inks. While ethanol/water blends have been shown to yield reasonable nanosheet ...