Showing papers in "Journal of Crystal Growth in 1997"

TL;DR: In this article, the processes in physical vapor transport: vaporization, transport and crystal growth, the regimes for transport: molecular flow path limited, diffusion-limited, convection-limited and forced-convection limited are analyzed.

TL;DR: In this article, the characteristics of metalorganic chemical vapor deposition (MOCVD) of Bi2Te3, Sb 2Te3 and their superlattice structures are discussed.

TL;DR: In this paper, the growth modes of ZnO epilayers were investigated by reflection high-energy electron diffraction, and a transition from two-dimensional nucleation to three-dimensional (3D) nucleation is found at the initial growth stage.

TL;DR: In this paper, the growth of GaN thick films by hydride vapor-phase epitaxy (HVPE) has been studied and the suitability of such films for epitaxial device overgrowths has been discussed.

TL;DR: In this article, LiNbO 3 single crystals have been grown using the top-seeded solution growth method from potassium containing flux and Spectroscopic properties (e.g., the UV absorption edge, OH-vibrational band) have been used for the characterization of the crystal composition.

TL;DR: KH2PO4 single crystals up to 45 cm in size have been grown by the rapid growth technique on the point seed in glass crystallizers of 1000 L in volume at growth rates of 10-20 mm/day in both the [0 0 1] and [1 0 0] directions as mentioned in this paper.

TL;DR: In this article, a diluted magnetic semiconductor, (Ga, Mn)As, with Mn composition x up to 0.07 was prepared by molecular-beam epitaxy on GaAs substrate at temperatures ranging from 160 to 320°C.

TL;DR: In this article, the thermodynamic properties of AIN, GaN and InN are considered and the mechanisms of nucleation and growth of GaN crystals are discussed on the basis of the experimental results.

TL;DR: In this article, it was shown that removal of a few tenths of a micron from the surface are usually sufficient to polish out irregularities 200 nm in height, and when optimized mechano-chemical polishing is used, atomically flat surfaces of bulk GaN have been reproducibly obtained (RMS= 0.1nm), as measured by Atomic Force Microscopy.

TL;DR: In this paper, the growth of calcite in aqueous solution was studied at temperatures between 25°C and 45°C with ionic strength between 15 and 415 mmol dm−3.

TL;DR: In this paper, high quality cubic GaN epilayers were grown on GaAs and 3C-SiC substrates by molecular beam epitaxy technique using dimethylhydrazine or ammonia/nitrogen plasma as a nitrogen source.

TL;DR: In this article, a III-V diluted magnetic semiconductors (Ga 1-x Mn x )As were grown on GaAs substrates by low-temperature molecular beam epitaxy using strong nonequilibrium growth conditions.

TL;DR: In this article, the authors used a steady and uniform magnetic field of 10 T and compared with the crystals grown under 0 T. They demonstrated that a magnetic field reduced the number of nuclei and not only oriented the crystals but also modified the habit of protein crystals.

TL;DR: In this paper, the fundamental properties of III-V compound semiconductors from a theoretical or computational standpoint are summarized and the contributions of electronic structure theory to the present context are discussed.

TL;DR: In this article, an epitaxial α-Fe 2 O 3 (0001) thin film was grown on MgO(001) by molecular beam epitaxy using an elemental Fe source and an electron cyclotron resonance oxygen plasma source.

TL;DR: In this paper, single crystals of bis(thiourea) cadmium chloride (BTCC) were grown from aqueous solutions and characterized by recording the powder X-ray diffraction pattern and by identifying the diffracting planes.

TL;DR: In this paper, the feasibility of the Attenuated Total Reflection (ATR) Fourier transform infrared (FTIR) spectroscopy for the in situ measurement of supersaturation in crystallization processes is established.

TL;DR: Chitin, a nitrogen-containing polysaccharide which is a major component of the exoskeletons of arthropods, was found to be a substrate favouring the deposition of calcite crystals from stable supersaturated solutions at pH 8.50 and at 25°C.

TL;DR: In this paper, the authors showed that tetrahydrofuran clathrate hydrate single crystals grow from the supercooled melt as octahedra, showing that {1 1 1} is the slowest growing face.

TL;DR: In this article, a version of the valanceforce field (VFF) model was developed specifically for the calculation of the nitrogen solubility in conventional III-V binary compounds, and the equilibrium mole fraction of N in GaP was calculated to be 6 × 10 −7 cm −3 at 700°C.

TL;DR: In this paper, the influence of iron and aluminium impurities on the dependence of the layer growth rate versus the solution supersaturation was studied using the method of in situ interference microscopy. But the question of how the stopper is trapped by the crystal is still unanswered.

TL;DR: In situ preparation of 4H and 6H silicon carbide substrate surfaces in hydrogen and hydrogen-propane etching systems has been studied as mentioned in this paper, where the etching of on-axis (0001) 6H-SiC substrates resulted in regular straight terraces and one unit high steps.

TL;DR: In this article, the crystal defects and internal strains of the synthetic type IIa diamonds were studied by double-crystal X-ray rocking curve measurement, polarizing microscopy, Xray topography and Raman spectroscopy.

TL;DR: The effect of microgravity on protein crystal growth is an interesting, but highly controversial, issue as mentioned in this paper, where the magnetic force was used similarly to the centrifugal force in a space shuttle to virtually change the level of gravity and the number of crystals increased or decreased when 5% of the additional force was applied in the same or in the opposite direction to normal gravity.

TL;DR: In this paper, a method for the growth of Ge 1-x Si x crystals using continuous feeding the melt with a number of Si rods was developed and the Ge 1 -x Ge x crystals (0 < x < 0.3) were grown.

TL;DR: In this paper, the authors describe the rate of crystal growth in solution in the presence of impurity as a function of supersaturation and the critical supersaturation below which a crystal does not grow is correlated with the impurity concentration.

TL;DR: In this article, the tetragonal crystals of hen egg-white lysozyme align their c-axis in the direction of a magnetic field, and it was found that crystals grew in solution, and started to sediment on reaching a critical size.

TL;DR: In this paper, a modified-Lely method was used to study the growth of 6H and 4H-SiC single crystals in parallel and perpendicular directions to the [0 0 0 1] basal plane.

TL;DR: In this paper, the crystallization process of soluble salts inside the natural and artificial porous materials partially immersed in different saline solutions has been studied, and the conditions of exposure to salt weathering in which foundations and lower walls of building structures are within the zone of capillary rise of saline ground water, Crystallization pressures that can develop in the samples, which are a function of the pore size and salt solution interfacial tension, have been calculated and are compared with experimental values of the materials tensile strength.

TL;DR: Isothermal batch precipitation experiments have been carried out in synthetic Bayer liquors to investigate the effects of sodium carbonate concentration on both silica solubility and the crystallisation of sodium aluminosilicates as discussed by the authors.