Browsing by Subject "thin films"
Now showing items 1-20 of 43
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Anisotropic transport behavior in ultrathin epitaxial Fe films on vicinal oxide substrates
(2005)Step-induced anisotropy of electron transport in ultrathin Fe film was investigated. The Fe films (2 and 10 nm) were deposited on vicinal MgO (100) substrate using molecular-beam epitaxy. It is found that the films with a ... -
Anomalous strain relaxation behaviour of Fe3O4/MgO (100) heteroepitaxial system grown using molecular beam epitaxy
(2006)Strain relaxation studies in epitaxial magnetite (Fe3O4) thin films grown on MgO (100) substrates using high-resolution x-ray diffraction and cross-sectional transmission electron microscopy reveal that the films remain ... -
Characterisation of thin film silicon films deposited by plasma enhanced chemical vapour deposition at 162MHz, using a large area, scalable, multi-tile-electrode plasma source
(2011)Large area (600 ? 720 mm) depositions of hydrogenated microcrystalline silicon (?c-Si:H) have been achieved at high deposition rates using a scalable, multi-tile electrode topology. Depositions have shown local results of ... -
Chemical bonding in copper-based transparent conducting oxides: CuMO(2) (M = In, Ga, Sc)
(Institute of Physics, 2011)The geometry and electronic structure of copper-based p-type delafossite transparent conducting oxides, CuMO(2) (M = In, Ga, Sc), are studied using the generalized gradient approximation (GGA) corrected for on-site Coulomb ... -
Developments in surface magneto-optical Kerr effect setup for ultrahigh vacuum analysis of magnetic ultrathin films
(2005)We describe a surface magneto-optical Kerr effect (SMOKE) setup designed to study the magnetic properties of ultrathin films in ultrahigh vacuum (UHV). As in earlier systems, a crossed-poles electromagnet is used, which ... -
A direct-write, resistless hard mask for rapid nanoscale patterning of diamond
(2011)We introduce a simple, resist-free dry etch mask for producing patterns in diamond, both bulk and thin deposited films. Direct gallium ion beam exposure of the native diamond surface to doses as low as 1016 cm-2 forms a ... -
The effect of deposition power on the electrical properties of Al-doped zinc oxide thin films
(2010)We investigated the effect on the electronic properties of aluminum (Al)-zinc oxide (ZnO) films by modulating the radio frequency sputtering power. Our experimental results show that increasing the sputtering power increases ... -
Electronic properties of bulk and thin film SrRuO3: a search for the metal-insulator transition.
(2008)We calculate the properties of the 4d ferromagnet SrRuO3 in bulk and thin film form with the aim of understanding the experimentally observed metal-to-insulator transition at reduced thickness. Although the spatial extent ... -
Enhancement of the magnetization saturation in magnetite (100) epitaxial films by thermo-chemical treatment
(2004)The effect of thermo-chemical treatment on the ease of saturation in a magnetic field of epitaxial magnetite (100) thin films grown on MgO (100) substrates was investigated. It was found that the films maintained a fully ... -
Epitaxial growth of ultrathin Cr films on Mo (110) at elevated temperature
(2006)The principal details of Cr film growth on Mo 110 at elevated temperature are described. Cr films form nanostripes by the step-flow growth mechanism for film coverages up to 3 monolayers. In contrast to the Fe/Mo 110 ... -
Epitaxial molybdenum oxide grown on MO (110): LEED, STM, and density functional theory calculations
(American Physical Society, 2007)The oxidation of Mo(110) was studied at 1000 ?C and 1?10?6 Torr oxygen. Low energy electron diffraction and scanning tunneling microscopy data were used to give a detailed analysis of the oxide surface structure. From ... -
Exposition of semiconducting and ferromagnetic properties of pulsed-laser-deposited thin films of LaFe1-xNixO3 (x=0.3, 0.4, and 0.5)
(American Institute of Physics, 2005)We have explored the possibility of ferromagnetic semiconducting property in the epitaxial thin films of LaFe1?xNixO3 x=0.3, 0.4, and 0.5 grown on 001 oriented LaAlO3 substrate. We observe that substitution of Ni in ... -
Giant magnetic moment in epitaxial Fe3O4 thin films on MgO (100)
(2008)Magnetization studies on well characterized epitaxial magnetite (Fe3O4) thin films grown on MgO(100) show that the ultrathin films (<5?nm thickness) are ferromagnetic and their magnetic moments are much greater than those ... -
Gold electrodeposition in organic media
(2011)Organic species are easily adsorbed onto metal electrodes, due to the high surface energy. This principle is widely employed in electrodeposition to obtain grains with a given shape and size. Electrodeposition in organic ... -
High-Performance Sensors Based on Molybdenum Disulfide Thin Films
(2013)High-performance sensors based on molybdenum disulfide (MoS2) grown by sulfurization of sputtered molybdenum layers are presented. Using a simple integration scheme, it is found that the electrical conductivity of MoS2 ... -
Influence of antiphase boundary density on the conduction noise properties of epitaxial magnetite thin films
(2005)Low frequency conduction noise (1/f noise) properties of epitaxial magnetite (Fe3O4) thin films having a varying density of antiphase boundaries (APBs) were investigated as a function of temperature and frequency. Temperature ... -
Influence of ferromagnetic substrate on the magnetoresistance of Cr film across a nonmagnetic insulating layer
(2003)(5 nm) Cr/(x?nm) MgO/Mn0.52Zn0.48Fe2O4 (MnZn spinel) substrate (1<x<7?nm), as well as (5 nm) Cr/(7 nm) MgO/glass substrate structures have been grown using molecular beam epitaxy. The influence of the MnZn spinel on the ... -
Influence of the antiphase domain distribution on the magnetic structure of magnetite thin films
(American Institute of Physics, 2006)A long-range ordered magnetic domain structure was found in magnetitelike (Fe3??O4, ? ? 0.03) thin films prepared by molecular beam epitaxy on MgO (100) substrates. The stripelike magnetic domain structure arising after ... -
Layer-dependent reactivity in the Fe/Mo(110) epitaxial ultrathin film system
(2003)Fe films in the 0.4<~?<~4.7ML (monolayer) coverage range were deposited on a Mo(110) substrate at temperatures between 300 K and 700 K, under ultrahigh vacuum conditions. The adsorption of CO, CO2, H2O, and O2 onto these ... -
Magnetic moment investigations of epitaxial magnetite thin films
(AMERICAN INSTITUTE OF PHYSICS, 2008)In this report, we provide an x-ray magnetic circular dichroism (XMCD) study for 100?nm thick epitaxial magnetite (Fe3O4) films on MgO (001) and Al2O3 (0001) substrates. For XMCD, we recorded the surface sensitive total ...