Aluminum oxidesemiconductordopingvalence controlfirst-principles calculationAluminum oxide, including crystalline Al2O3 and amorphous AlOx, is usually regarded as an insulator. If its conductivity is controlled by donor and acceptor doping, it can be used for various electronics applications as a wide-...
Thermal conductivity, also called thermal conductivity, is a parameter index that characterizes the thermal conductivity of materials. It indicates the heat conduction per unit time, unit area, and negative temperature gradient. The unit is W/m·K or W/m·℃. Aluminum alloy is an alloy material...
only in combination, chiefly in bauxite. Having good conductive and thermal properties, it is used to form many hard, light, corrosion-resistant alloys. Atomic number 13; atomic weight 26.9815; melting point 660.32°C; boiling point 2,519°C; specific gravity 2.70; valence 3. SeePeriodic ...
The valence band offset (VBO) of an AlGaN/GaN heterojunction is determined to be 0.13 ± 0.07 eV by x-ray photoelectron spectroscopy. From the obtained VBO value, the conduction band offset (CBO) of ~0.22 eV is obtained. The results indicate that the AlGaN/GaN heterojunction exhibits a type...
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the valence state of 5delement39. As illustrated in Fig.1g, the white-line energy position of Pt–Ru/RuO2is located between Pt foil and PtO2, implying the oxidized state of Pt species is between 0 and +4 in Pt–Ru/RuO240. Moreover, the extended X-ray absorption fine structure (...
infrared detectors, low-melting glass, and formerly in rodent and ant poisons. A radioactive isotope, Tl-201, is used in medical imaging. Atomic number 81; atomic weight 204.38; melting point 304°C; boiling point 1,473°C; specific gravity 11.85 (20°C); valence 1, 3. SeePeriodic Tabl...
N., 1957. Absorption spectrum of KH2PO4 in the region of hydroxyl valence vibration. Zh. Tekhn. Fiz. 27:426. Google Scholar —, 1960. Vibration spectra of the silicates. I. Infrared spectra of silicates with anions of type (Si2O7). Opt. i Spektroskopiya 9:195. Google Scholar ...
presentsthevalenceofthereciprocalratio. IfthesameamountofH2isproduced,theratioofthemassof themetalrequiredisequaltothemassratioofthemetalwhen the1molislost. [sample1]twoalloysoffourmetalelements,sodium,magnesium, aluminum,zinc, 12 grams, react with sufficient hydrochloric ...
9., iron, aluminum, chromium, nickel and other metal and cold concentrated sulfuric acid or concentrated nitric acid can produce passivation phenomenon. 10. valence metal (such as Fe) and non oxygen acid reaction, generate low metal salts; transition metals (such as Fe) and oxidative acid reac...