Transport phenomena in a high pressure crystal growth system: In situ synthesis for InP melt

1997 ◽  
Vol 177 (3-4) ◽  
pp. 196-206 ◽  
Author(s):  
H. Zhang ◽  
V. Prasad ◽  
A.P. Anselmo ◽  
D.F. Bliss ◽  
G. Iseler
Keyword(s):  
High Pressure ◽  
Crystal Growth ◽  
Transport Phenomena ◽  
In Situ Synthesis ◽  
Growth System

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

In situ synthesis of cBN–Ti3AlC2 composites by high‐pressure and high‐temperature technology

2012 ◽  
Vol 29 ◽  
pp. 8-12 ◽  
Author(s):  
Liang Li ◽  
Aiguo Zhou ◽  
Libo Wang ◽  
Shangsheng Li ◽  
Dongxu Wu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
In Situ Synthesis

ChemInform Abstract: In situ Synthesis of TiCp/Ni3Al Composites under High Pressure.

ChemInform ◽  
2010 ◽  
Vol 28 (23) ◽  
pp. no-no
Author(s):  
H. LIU ◽  
A. WANG ◽  
L. WANG ◽  
B. DING ◽  
Z. HU
Keyword(s):  
High Pressure ◽  
In Situ Synthesis

Investigation of the influence of pressurized CO2 on the crystal growth of poly(l-lactic acid) by using an in situ high-pressure optical system

Soft Matter ◽  
2019 ◽  
Vol 15 (28) ◽  
pp. 5714-5727 ◽  
Author(s):  
Lei Zhang ◽  
Guoqun Zhao ◽  
Guilong Wang
Keyword(s):  
High Pressure ◽  
Lactic Acid ◽  
Crystal Growth ◽  
Optical System ◽  
System P ◽  
Rhythmic Growth

The rhythmic growth of the bamboo-like branch of PLLA crystals under pressurized CO2.

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2019 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.51 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

In Situ Synthesis of TiCp/Ni3Al Composites under High Pressure

2005 ◽  
Vol 80 (2) ◽  
pp. 521-523 ◽  
Author(s):  
Haozhe Liu ◽  
Aimin Wang ◽  
Luhong Wang ◽  
Bingzhe Ding ◽  
Zhuangqi Hu
Keyword(s):  
High Pressure ◽  
In Situ Synthesis

High-temperature Raman spectroscopy of the Cs2O–B2O3–MoO3 system for CsB3O5 crystal growth

2016 ◽  
Vol 49 (2) ◽  
pp. 479-484
Author(s):  
Shanshan Liu ◽  
Guochun Zhang ◽  
Songming Wan ◽  
Jinglin You ◽  
Mohamed-Ramzi Ammar ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
Crystal Growth ◽  
High Temperature ◽  
Isomerization Reaction ◽  
Spontaneous Crystallization ◽  
System A ◽  
Solution Interface ◽  
Growth System

Raman spectroscopy at high temperature has been applied to study in situ the microstructure of the solution in a Cs2O–B2O3–MoO3 growth system. A crystal–solution interface was observed. The BO groups consist of spiral chains based on B3O4Ø2 rings in the solution (Ø is a bridging O atom). The Raman spectrum of the solution indicates that MoO4 tetrahedra existed in the growth system. The nonbridging O atoms of the chains combined with the MoO4 groups, which decreased the viscosity. The Raman spectra near the interface show that at the boundary an isomerization reaction from three- to four-coordinated boron occurred. The formation of B3Ø7 triborate groups occurred. The morphology of the CsB3O5 crystal resulting from spontaneous crystallization was observed to correspond to our expectations.

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