Journal of Crystal Growth

Items from 1 to 13 out of 13 results

article

Improvement of InAs quantum dots optical properties in close proximity to GaAs(001) substrate surface

J. Martín-Sánchez, Y. González, P. Alonso-González, L. González

Journal of Crystal Growth > 2008 > 310 > 22 > 4676-4680

In this work we demonstrate a growth process for obtaining high optical emission efficiency InAs/GaAs(001) quantum dots (QD) formed at short distance to the interface with the GaAs substrate. In particular, after an initial exposure of the substrate surface to long times of atomic hydrogen flux (t _H up to 45min) followed by a posterior growth of a GaAs buffer layer by atomic layer molecular...

article

Mechanism of crystallization of zeolite A microcrystals from initially clear aluminosilicate solution: A population balance analysis

Josip Bronić, Ana Mužic, Tatjana Antonić Jelić, Jasmina Kontrec, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4656-4665

Heating of the clear aluminosilicate solution (33.33 Na ₂ O Al ₂ O ₃ 3.33 SiO ₂ 400 H ₂ O) from the room temperature (23°C) to that the reaction (40, 50 and 60°C) causes a spontaneous precipitation of an amorphous aluminosilicate (gel) and simultaneous formation of zeolite nuclei in the gel matrix. Measuring of the mass, m _s , of the precipitated amorphous...

article

High optical quality ZnO epilayers grown on sapphire substrates by reactive magnetron sputtering of zinc target

Sukhvinder Singh, Ravi Kumar, Tapas Ganguli, R.S. Srinivasa, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4640-4646

Zinc oxide (ZnO) epilayers were grown on (0001) sapphire substrates by reactive sputtering of a zinc target at substrate temperatures of 300 and 600°C. High-resolution X-ray diffraction, UV–visible and photoluminescence (PL) measurements were carried out to obtain information about epitaxy, micro-structure and optically active defects in these epilayers. Though the epilayer deposited at 600°C showed...

article

Growth of a new laser crystal Nd3+ doped calcium tantalum gallium garnet by the Czochralski method

Shiyi Guo, Duorong Yuan, Xiufeng Cheng, Haohai Yu, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4685-4688

An Nd ³⁺ doped calcium tantalum gallium garnet (CTGG) crystal with dimensions of φ25mm×40mm was successfully grown for the first time by the Czochralski method. X-ray powder diffraction pattern of Nd ³⁺ :CTGG was given out, and the structure parameters were calculated. Its absorption and fluorescence spectra were measured at room temperature. The laser output at 1.06μm is performed...

article

Solvothermal synthesis of disk-like YF3 superstructures

Shijin Wang, Hualan Xu, Xiangshu Chen, Shengliang Zhong, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4697-4700

Uniform orthorhombic YF ₃ disk-like superstructures have been fabricated for the first time via a facile solvothermal method with ethanol as solvent in the presence of triethylenetetramine. The diameters and thicknesses of the disks are 700–1150nm and 150–250nm, respectively. The influence of triethylenetetramine on the morphology development has been experimentally investigated. Results show...

article

Nucleation and growth of CuSO4·5H2O crystals on the liquid state stearic acid Langmuir–Blodgett film

Fei Lu, Hai-Shui Wang, Xinmei Zhao, Yukihiro Ozaki

Journal of Crystal Growth > 2008 > 310 > 22 > 4652-4655

Oriented crystallization of CuSO ₄ ·5H ₂ O on a Langmuir–Blodgett (LB) film of stearic acid has been studied in the temperature ranges of 73–68°C and 53–20°C, respectively. This is the first time that the LB film at temperature above its melting point has been served as a template to induce nucleation and growth of crystals. The experimental results demonstrated that the LB film in...

article

Novel polyhedron-like t-LaVO4:Dy3+ nanocrystals: Hydrothermal synthesis and photoluminescence properties

Guocong Liu, Xuechen Duan, Haibin Li, Hui Dong, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4689-4696

Novel polyhedron-like LaVO ₄ :Dy ³⁺ nanocrystals (NCs) with tetragonal (t-) structure have been prepared via a facile hydrothermal route at 160°C for 24h. The as-prepared samples were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence (PL) spectroscopy. High-quality and uniform polyhedrons with a mean length of 80nm and...

article

Pressure effect on the solid–liquid equilibrium forms of odd normal alkanes

Koji Shigematsu, Yutaka Saito, Kana Saito, Yoshinori Takahashi

Journal of Crystal Growth > 2008 > 310 > 22 > 4681-4684

This paper describes the changes in equilibrium forms of small odd-numbered normal alkane crystals (carbon number: 9, 11 and 13) as functions of temperature, pressure and the carbon number. The crystals were grown by increasing pressure of the liquids using a diamond anvil cell (DAC). After single crystals were prepared in the DAC under high pressure, the crystals were maintained for a long period...

article

Thermodynamical analysis of oxygen incorporation from a quartz crucible during solidification of multicrystalline silicon for solar cell

Hitoshi Matsuo, R. Bairava Ganesh, Satoshi Nakano, Lijun Liu, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4666-4671

We proposed an oxygen transport model in which the reaction between a liner made of Si ₃ N ₄ and a crucible made of SiO ₂ was taken into account to study the mechanism of oxygen incorporation in multicrystalline silicon for a solar cell grown by the unidirectional solidification method. The equilibrium oxygen concentration in the case of the unidirectional solidification method...

article

Role of fetal bovine serum in the prevention of calcification in biological fluids

Peng Liu, Jinhui Tao, Yurong Cai, Haihua Pan, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4672-4675

The presence of biological molecules can significantly regulate the crystallization of inorganic hard tissues in living organisms. The purpose of this study is to investigate the influence of fetal bovine serum (FBS) on the precipitation and phase transformation of calcium phosphate. The precipitation of large-sized calcium phosphate in RPMI1640, a widely used cell culture, is readily induced by an...

article

Structural features of Ge(Ga) single crystals grown by the floating zone method in microgravity

I.A. Prokhorov, B.G. Zakharov, A.S. Senchenkov, A.V. Egorov, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4701-4707

Structural features of the Ge(Ga) single crystal grown by the floating zone (FZ) method in microgravity environment aboard the FOTON-9 spacecraft are investigated by methods of X-ray topography, double-crystal diffractometry, selective chemical etching and spreading resistance measurements. It is established that the crystal structure is characterized by the presence of an incompletely melted region...

article

Sol–gel synthesis and characterization of lead-free LNKN nanocrystalline powder

Chao Wang, Yudong Hou, Haiyan Ge, Mankang Zhu, more

Journal of Crystal Growth > 2008 > 310 > 22 > 4635-4639

A kind of lead-free nanocrystalline powder, (Li _0.06 Na _0.47 K _0.47 )NbO ₃ (LNKN), has been prepared by a newly developed sol–gel method using Nb ₂ O ₅ as the Nb source. Phase analysis, microstructure and morphology of the powder were determined by X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman, transmission electron microscope (TEM)...

article

An interpretation of the metastable zone width concerning primary nucleation in anti-solvent crystallization

Noriaki Kubota

Journal of Crystal Growth > 2008 > 310 > 22 > 4647-4651

A new model is proposed to interpret metastable zone widths (MSZWs) obtained for anti-solvent crystallization. The MSZW is defined as an excessive anti-solvent composition or supersaturation at which the number density of accumulated grown primary nuclei has reached a fixed value when the anti-solvent is continuously added at a constant rate into the initial saturated solution. In the model, the steady-state...

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Number:
22
Volume:
310
Year:
2008

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Keywords

A1. CHARACTERIZATION (3)
A1. CRYSTAL MORPHOLOGY (3)
A1. INTERFACES (3)
A1. NUCLEATION (3)
A1. NANOSTRUCTURES (2)
B1. CALCIUM COMPOUNDS (2)
B1. NANOMATERIALS (2)
A1. BIOCRYSTALLIZATION (1)
A1. CHEMICAL SYNTHESIS (1)
A1. CRYSTAL GROWTH (1)
A1. DEFECTS (1)
A1. DIRECTIONAL SOLIDIFICATION (1)
A1. GROWTH MODEL (1)
A1. HIGH-RESOLUTION X-RAY DIFFRACTION (1)
A1. IMPURITIES (1)
A1. METASTABLE ZONE WIDTH (1)
A1. PHASE EQUILIBRIA (1)
A1. PHOTOLUMINESCENCE (1)
A1. SUPERSATURATED SOLUTIONS (1)
A1. X-RAY DIFFRACTION (1)
A1. X-RAY TOPOGRAPHY (1)
A2. CRYSTAL GROWTH (1)
A2. CZOCHRALSKI METHOD (1)
A2. FLOATING ZONE TECHNIQUE (1)
A2. GROWTH FROM SOLUTIONS (1)
A2. HYDROTHERMAL CRYSTAL GROWTH (1)
A2. INDUSTRIAL CRYSTALLIZATION (1)
A2. MICROGRAVITY CONDITIONS (1)
A2. PRESSURE-INDUCED GROWTH (1)
A3. MOLECULAR BEAM EPITAXY (1)
A3. RF SPUTTERING (1)
B1. BIOLOGICAL MACROMOLECULES (1)
B1. GALLIUM COMPOUNDS (1)
B1. INORGANIC COMPOUNDS (1)
B1. MINERALS (1)
B1. NIOBATES (1)
B1. ORGANIC COMPOUNDS (1)
B1. PHOSPHATES (1)
B1. RARE EARTH COMPOUNDS (1)
B1. YTTRIUM COMPOUNDS (1)
B1. ZEOLITE A (1)
B1. ZINC OXIDE (1)
B2. FERROELECTRIC MATERIALS (1)
B2. OPTICAL PROPERTIES (1)
B2. SEMICONDUCTING GERMANIUM (1)
B2. SEMICONDUCTING III–V MATERIALS (1)
B2. SEMICONDUCTING SILICON (1)
B3. SOLAR CELLS (1)
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