نتایج جستجو برای: ti si mixed oxides
تعداد نتایج: 345210 فیلتر نتایج به سال:
Silicon surfaces terminated with a mixed monolayer containing both a propyl aldehyde functionality and methyl groups were prepared and used to control the interfacial chemical and electronic properties of Si(111) surfaces during atomic-layer deposition (ALD) of Al2O3 or MnO. Si(111) surfaces functionalized only with the aldehyde moiety exhibited surface recombination velocities, S, of 2500 ± 60...
in this study, mixed metal oxides al2o3/mgo/tio2 coatings with al/mg/ti ratio of 5:1:3 and 2.5:3:4 were coated on aluminum by sol-gel method. the surface morphology, phase analysis, thermal behavior and the corrosion behavior of the al2o3/mgo/tio2 coatings were characterized by (sem), (xrd), (tg-dta) and potentiodynamic polarization test in 3.5 wt.% nacl solution. the results demonstrated that ...
We report the rich magnetic behaviour of Sr2CoNb1-xTixO6 (0 ≤ x ≤ 0.5) oxides as a result of their complex microstructure. Although these oxides show an average simple-cubic perovskite structure, they present a flexible microstructure due to short-range ordering between Co/Ti and Nb cations in the perovskite B-sites. The microstructure consists of double-cubic perovskite domains grown in a simp...
Aluminum and copper are widely used for microelectronic interconnect applications. Interfacial oxides can cause device performance degradation and failure by significantly increasing electrical resistance. Interfacial oxide layers found in Al/Ta and Ta/Cu metal stacks were studied using Transmission Electron Microscopy (TEM) combined with Energy Dispersive Spectroscopy (EDS) and Parallel Electr...
Ti1-xSixN (0 ≤ x ≤ 0.26) thin films are grown in mixed Ar/N2 discharges using hybrid highpower pulsed and dc magnetron co-sputtering (HIPIMS/DCMS). In the first set of experiments, the Si target is powered in HIPIMS mode and the Ti target in DCMS; the positions of the targets are then switched for the second set. In both cases, the Si concentration in co-sputtered films, deposited at Ts = 500 °...
The thermal expansion coefficient (TEC) of binary glasses SiO 2 -TiO decreases as the TiO concentration grows. At in range 4-6 mol% (in dependence applied synthesis method) TEC becomes negative; at 8-11 devitrification occurs. A combination photoluminescence (PL) and IR reflection techniques were for studying evolution point structural defects from zero to phase separation. precision measuremen...
In the context of this problem, we need to be very specific on choosing an uncovered sk, tk-path at each iteration. Fix a vertex r of G as the root of the tree. For each pair (si, ti), let LCA(si, ti) denote the least common ancestor of si and ti, which is the vertex at the intersection of the paths from si to r and from ti to r. Note that LCA(si, ti) could be si or ti. Let d(si, ti) denote the...
X-ray fluorescence spectra obtained by the MESSENGER spacecraft orbiting Mercury indicate that the planet's surface differs in composition from those of other terrestrial planets. Relatively high Mg/Si and low Al/Si and Ca/Si ratios rule out a lunarlike feldspar-rich crust. The sulfur abundance is at least 10 times higher than that of the silicate portion of Earth or the Moon, and this observat...
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