Search
Now showing items 731-740 of 2111
Dispersion of the third order optical nonlinearity & all-optical switching figures of merit in molecularly engineered polymers
(Trinity College (Dublin, Ireland). School of Physics, 2002)
Solid state and solution measurements of the effective third order nonlinear absorption and refraction, have been earned out on poly (2,5-dioctyloxy-paraphenylene-vinylene-co-2,5- pyridinyl) (Pyridinyl PAV), poly ...
Magnetic properties of planar nanowire arrays of Co fabricated on oxidized step-bunched silicon templates
(NANOTECHNOLOGY, 2012-06-15)
Planar nanowire (NW) arrays of Co grown on oxidized step-bunched Si(111) templates exhibit room temperature ferromagnetic behaviour for wire widths down to 25 nm. Temperature and thickness dependent magnetization studies ...
Evidence for two-band magnetotransport in half-metallic chromium dioxide
(American Physical Society, 2000)
Magnetotransport measurements were made on patterned, (110) oriented CrO2 thin films grown by the high-pressure, thermal decomposition of CrO3 onto rutile substrates. The low-temperature Hall effect exhibits a sign reversal ...
Spin scattering in ferromagnetic thin films
(American Physical Society, 1996)
By combining parallel and transverse magnetoresistance measurements on thin films of Co and Ni, the contribution of spin scattering at the domain walls is separated from the anisotropic magnetoresistance (AMR). A model, ...
Local investigations of switchable rotaxane molecules at interfaces using atomic force microscopy
(Trinity College (Dublin, Ireland). School of Physics, 2008)
Rotaxane molecules (interlocked molecules consisting of two parts bonded
mechanically) have an inherent multi-stability. The relative positions of the submolecular
components can be altered through external stimuli, a ...
Manipulating atoms using scanning probe microscopy
(Trinity College (Dublin, Ireland). School of Physics, 2009)
Manipulating species using Scanning Probe Microscopy (SPM) is an important discipline in the field of bottom-up fabrication, which facilitates nano-mechanics and electron dynamics investigations. Previous low temperature ...
Ferromagnetic polarons in La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3
(2003)
Unrestricted Hartree-Fock calculations on La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3 in the full magnetic unit cell show that the magnetic ground states of these compounds consist of 'ferromagnetic molecules' or polarons ordered ...
Electronic Contribution to the energetics of helically-wrapped nanotubes
(2006)
Motivated by evidence of helical wrapping of polymeric molecules around nanotubes, we calculate the
electronic contribution to the energetics of linear charge distributions around a nanoscale cylindrical structure.
This ...