The simultaneous presence of aluminum and yttrium in the oxide markedly promotes the thermal stability of the amorphous oxide phase, enabling the growth of the amorphous oxide layer up to ∼100 nm thickness. The stability of the amorphous oxide can be enhanced by suppressing the nucleation of ...
Nanopowders of yttrium oxide have been synthesized by co-precipitation method. The as-prepared and annealed powders were characterized by X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscope (SEM), UV–visible (UV–vis) absorption spectra and Fourier Transform...
Yttrium was added by top coating in a vacuum coater and compared to ytterbium added pre-extrusion.Digestibility measured in Atlantic salmon using the two marker addition methods showed similar results.Different nutrients and markers had different gastrointestinal evacuation rates.Yttrium oxide added by top...
Samples (meteoritic iron, terrestrial Fe oxide,carbonate minerals; size as small as 2×10−5g Fe) were prepared by dissolution in a 6M HCl (preferred above HNO3to reduce formation of Ar–N molecular species) solution.Purificationwas applied by using a two-step precipitation of Fe(OH)3with ...
Impact of the channel thickness on the performance of Schottky barrier metal–oxide–semiconductor field-effect transistors. Appl. Phys. Lett. 81, 3082 (2002). Google Scholar Pang, C. S., Wu, P., Appenzeller, J. & Chen, Z. Sub-1nm EOT WS2-FET with IDS > 600μA/μm at VDS...
yttrium oxide nanoparticles have attracted growing interest owing to their excellent physiochemical properties15,16. They are transparent in the visible region, semiconductor in nature, have high refractive index, large gap band (5.8Ev), high specific surface area and volume, high photochemical stability...
Comprehensivestruc-tural,morphologicalandspectroscopicalstudieshavebeencarriedoutonthenanometrescale.Theas-preparedsamplesarecharacterizedusingX-rayphotoelectronspectra(XPS),toinvestigatetheele-mentarystatesonthesurfaces.Asignificantshift(?0.22–0.36eV)intheopticalspectraoftheY2O2S:Eu3+systemcorrespondingtothe...
Analyses of charge density and electron localization functions confirmed the metallic behavior of the studied MXenes. Modifying the electronic band gap of 2D MXenes, while also preserving structural stability, could lead to enhancing the application of these materials in optoelectronic devices. 展开 ...
7 is because of the thermal decomposition at a temperature necessary for the crystallization of the yttrium oxide particles. Also, this last spectrum presents the previously observed metal-oxygen band at 576 cm−1, which remained but was displaced to lower wavenumber values (560 cm−1) ...
The reflection measurements were performed and band gap (E g ) calculations have been done by using the spectroscopic reflectometer measurements. The electrical parameters were examined by specifying surface state density and alternating-current (a.c.) conductivity. The results have revealed that the ...