scholarly journals Highly Dispersed Mixed Zirconia and Hafnia Nanoparticles in a Silica Matrix: First Example of a ZrO2 -HfO2 -SiO2 Ternary Oxide System

2007 ◽  
Vol 17 (10) ◽  
pp. 1671-1681 ◽  
Author(s):  
L. Armelao ◽  
H. Bertagnolli ◽  
D. Bleiner ◽  
M. Groenewolt ◽  
S. Gross ◽  
...  
Keyword(s):  
Oxide System ◽  
Silica Matrix ◽  
Ternary Oxide ◽  
Highly Dispersed ◽  
Ternary Oxide System

Synthesis and characterization of cordierite from acetylacetonate/alkoxide precursors

1993 ◽  
Vol 8 (7) ◽  
pp. 1697-1702 ◽  
Author(s):  
Lawrence D. David ◽  
Ronald M. Anderson ◽  
Joseph M. Dynys ◽  
Charles C. Goldsmith ◽  
Andrew Szule
Keyword(s):  
Primary Particle ◽  
Oxide System ◽  
Ethanol Solution ◽  
Ternary Oxide ◽  
Alkyl Esters ◽  
Α Phase ◽  
Alkoxide Precursors ◽  
Ternary Oxide System ◽  
Spray Dried

Syntheses of ultrafine glass powders in the MgO–Al2O3–SiO2 ternary oxide system were effected by drying and calcining sols derived from acetylacetonate-tetraethoxysilane ethanol solutions. A mixture of magnesium and aluminum acetylacetonates, dissolved with Si(OC2H5)4 in an ethanol solution in a 2:4:5 Mg: Al: Si mole ratio, was hydrolyzed, spray-dried, and calcined to yield a glass powder of 70 Å primary particle size, which sintered to densities ≥ 2.5 g/cm3 and which formed μ-cordierite as the only crystalline phase below 1000 °C. Incorporation of dopant quantities of boron and phosphorus, via their alkyl esters in the hydrolysis reaction with Si(OC2H5)4 and the acetylacetonates, afforded powders which crystallized in the α-phase directly after sintering to density = 2.66 g/cm3.

scholarly journals A tunable amorphous p-type ternary oxide system: The highly mismatched alloy of copper tin oxide

2015 ◽  
Vol 118 (10) ◽  
pp. 105702 ◽  
Author(s):  
Patrick J. M. Isherwood ◽  
Keith T. Butler ◽  
Aron Walsh ◽  
John M. Walls
Keyword(s):  
Tin Oxide ◽  
Oxide System ◽  
Ternary Oxide ◽  
P Type ◽  
Ternary Oxide System

Solid solution in the LiAlO2LiCrO2 ternary oxide system

1989 ◽  
Vol 156 (1-2) ◽  
pp. 291-297 ◽  
Author(s):  
Kenneth R. Poeppelmeier ◽  
Stephen H. Thong
Keyword(s):  
Solid Solution ◽  
Oxide System ◽  
Ternary Oxide ◽  
Ternary Oxide System

scholarly journals Electronic properties of the Sn1−xPbxO alloy and band alignment of the SnO/PbO system: a DFT study

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
N. Kelaidis ◽  
S. Bousiadi ◽  
M. Zervos ◽  
A. Chroneos ◽  
N. N. Lathiotakis
Keyword(s):  
Band Gap ◽  
Electronic Properties ◽  
Density Functional ◽  
Hydrogen Generation ◽  
Valence Band Maximum ◽  
Oxide System ◽  
Band Alignment ◽  
Oxide Thin Film ◽  
Ternary Oxide ◽  
P Type

Abstract Tin monoxide (SnO) has attracted attention due to its p-type character and capability of ambipolar conductivity when properly doped, properties that are beneficial for the realization of complementary oxide thin film transistors technology, transparent flexible circuits and optoelectronic applications in general. However, its small fundamental band gap (0.7 eV) limits its applications as a solar energy material, therefore tuning its electronic properties is necessary for optimal performance. In this work, we use density functional theory (DFT) calculations to examine the electronic properties of the Sn1−xPbxO ternary oxide system. Alloying with Pb by element substitution increases the band gap of SnO without inducing defect states in the band gap retaining the anti-bonding character of the valence band maximum which is beneficial for p-type conductivity. We also examine the properties of the SnO/PbO heterojunction system in terms of band alignment and the effect of the most common intrinsic defects. A broken gap band alignment for the SnO/PbO heterojunction is calculated, which can be attractive for energy conversion in solar cells, photocatalysis and hydrogen generation.

DTA Analysis on the Solidification Behavior of the Al2O2-Y2O3-ZrO2 Ternary Oxide System and Microstructural Investigation

2012 ◽  
Vol 706-709 ◽  
pp. 2424-2427
Author(s):  
Hai Jun Su ◽  
Jun Zhang ◽  
Wei Guo ◽  
Jian Zheng Yu ◽  
Lin Liu ◽  
...  
Keyword(s):  
Heating Temperature ◽  
Solidus Temperature ◽  
Ternary Eutectic ◽  
Eutectic Structure ◽  
Oxide System ◽  
Ternary Oxide ◽  
Oxide Ceramic ◽  
Solidification Behavior ◽  
Microstructural Investigation ◽  
Dta Analysis

The well-aligned growth structures which derive from directional solidification of ceramic eutectics are of great interests due to their potential use in electronic devices and as structural materials at high temperatures. Because of the complexity of the component system and very high melting points, the solidification behavior on the oxide ceramic eutectic is still unclear up to date. In the presented paper, the Al2O3-Y2O3-ZrO2ternary eutectic ceramic is remelted by a DTA apparatus. The maximal heating temperature is 1950 °C. The melting and solidification behavior are investigated by the DTA analysis. The solidification microstructure is investigated by scanning electron microscopy (SEM), energy disperse spectroscopy (EDS) and X-ray diffraction (XRD). The results show that solidus temperature and the liquidus temperature are 1738.4 °C and 1750.1 °C, respectively. The formation path of eutectic phase is discussed. The microstructure of as-solidified eutectic ceramic shows a divorced ternary eutectic structure consisting of Al2O3, YAG and ZrO2phases with a random distribution. Furthermore, the microstructural comparison with directionally solidified ternary eutectic ceramic is presented and discussed.

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