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Growth diagram and morphologies of AlN thin films grown by molecular beam epitaxy
A growth diagram for molecular beam epitaxy of AlN on sapphire and 6H–SiC was established using reflection high energy electron diffraction, atomic force microscopy, and Rutherford backscatteringExpand
Shock Metamorphism of Deformed Quartz
AbstractDeformed, synthetic quartz containing a dislocation density of 2.9 ± 1.9 × 108/cm2 and abundant bubbles and small inclusions was shocked to peak pressures of 12 and 24 GPa. The resultantExpand
Characterization of surface acoustic wave propagation in a ZnO layer on a conducting substrate
In recent years many publications about theoretical as well as practical aspects of ZnO layers on dielectric or piezoelectric substrates were published. Up to now, the main research objectives wereExpand
Mullite formation from highly homogeneous mixtures of Al2O3 and SiO2
Mullite, 3A12O3 · 2SiO2, was synthesized by heat-treating homogeneous sol-gel-derived mixtures of A12O3 and SiO2 taken in stoichiometric amounts. To reduce the mullitization temperature, solsExpand
Orientation specific synthesis of kinked silicon nanowires grown by the vapour-liquid-solid mechanism.
Structural high resolution transmission electron microscopy (HRTEM) characterization of the sample shows that epitaxial Si-NWs synthesized on Si(111) substrates at a total pressure of 3 mbar grow along the {111} direction, while the ones at 15 mbar favour the {112} direction. Expand
Direct observation of different equilibrium Ga adlayer coverages and their desorption kinetics on GaN (0001) and (0001̄) surfaces
We present a Ga adsorption study of both polar GaN (0001) and $(0001\ifmmode\bar\else\textasciimacron\fi{})$ surfaces using line-of-sight quadrupole mass spectrometry as a quantitative in situExpand
Homogeneity of Langasite and Langatate wafers for acoustic wave applications
Variations in the concentration of the chemical constituents of Langasite (La/sub 3/Ga/sub 5/SiO/sub 14/) and its homeotype Langatate (La/sub 3/Ta/sub 0.5/Ga/sub 5.5/O/sub 14/) have been found by theExpand
Extended defects in hexagonal BaTiO3
Abstract At 1460°C in air, BaTiO3 shows a phase transition from the cubic to the hexagonal phase. Under reducing conditions, however, the phase transition temperature can be lowered to 1330°C. AfterExpand
Langasite and langatate nonuniform material properties correlated to the performance of SAW devices
Material properties of Langasite (LGS) and its homologous compounds, e.g., Langatate (LGT) have been investigated employing lattice constants measurements revealing that the micro structured growthExpand
Characterization of diamond coatings with transmission electron microscopy
Abstract CVD diamond layers grown by the microwave-assisted plasma-CVD technique were investigated by TEM. The microstructures of samples from different sites in the growth area, which showedExpand