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Now showing items 1941-1950 of 2111
Design of Novel Magnetic Materials with Machine-Learning and High-Throughput Techniques
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)
The importance of magnetic materials in modern applications is unquestionable. They are used in a wide range of applications, going from data storage devices to green energy production. This class of materials is well known ...
Scanning tunneling microscopy studies of the Fe3O4(001) surface using antiferromagnetic probes
(2003)
We have studied the (001) surface of a Fe3O4 single crystal using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES) and scanning tunneling microscopy (STM). The STM measurements were performed using ...
Asymmetry effects in atomically resolved STM images of Cu (014)-O and W (100)-O surfaces measured with MnNi tips
(2007)
We report on scanning tunneling microscopy (STM) studies of the Cu(014)-O and W(100)-O surfaces using MnNi tips. The STM data demonstrate asymmetry effects in atomically resolved images of W(100)-O as well as a regular ...
Metals, semimetals and semiconductors for spinelectronics
(Trinity College (Dublin, Ireland). School of Physics, 2008)
The development of the new field of spin electronics depends upon the existence of materials and structures that may be used as effective spin-polarised current injectors, transmitters, manipulators and detectors. Potential ...
Defect-trapped electrons and ferromagnetic exchange in ZnO
(2011)
A model for ferromagnetism observed at ambient temperature in films of oxides such as ZnO is proposed and evaluated. The ferromagnetic moment in the model arises from electrons trapped at negatively charged vacancies in ...
Investigation of optimum wavelength converter based on nonlinear polarization rotation in a bulk SOA
(2007)
This work is focused on understanding and optimising the physical mechanisms responsible for wavelength conversion based on cross-polarisation modulation (XPolM) in a bulk semiconductor optical amplifier. A comparison is ...
All-optical pulse processing for advanced photonic communication system
(IEEE, 2008)
This paper investigates the use of a Two-Photon Absorption photodetector for high speed processing of ultrashort
optical pulses in advanced photonic communication systems. Specifically the paper describes how the
Two-Photon ...
Magnetic Structuring of Electrodeposits
(2011)
Metal electrodeposition reflects the pattern of the magnetic field at the cathode surface created by a magnet array. For deposits from paramagnetic cations such as Co2+ or Cu2+, the effect is explained in terms of magnetic ...
Anomalous length dependence of conductance of aromatic nanoribbons with amine anchoring groups
(2012)
Two sets of aromatic nanoribbons, based around a common hexagonal scaffolding, with single and dual terminal amine groups have been considered as potential molecular wires in a junction formed by gold leads. Charge transport ...
d-zero Magnetism in Nanoporous Amorphous Alumina Membranes
(2018)
Nanoporous alumina membranes produced by mild or hard anodisation in oxalic acid at potentials ranging from 5 – 140 V have a controllable pore surface area of up to 200 times the membrane area. They exhibit a saturating ...