Observation of etch pits and defects in diamond single crystals prepared under high temperature–high pressure

2001 ◽  
Vol 315 (1-2) ◽  
pp. 108-112 ◽  
Author(s):  
Long-Wei Yin ◽  
Mu-Sen Li ◽  
Dong-Sheng Sun ◽  
Zhao-Yin Hao ◽  
Feng-Zhao Li ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Etch Pits ◽  
Diamond Single Crystals ◽  
High Temperature High Pressure

Millimeter-sized sodalite single crystals grown under high-temperature, high-pressure hydrothermal conditions

2001 ◽  
Vol 42 (2-3) ◽  
pp. 229-234 ◽  
Author(s):  
Tsuyoshi Shiraki ◽  
Toru Wakihara ◽  
Masayoshi Sadakata ◽  
Masahiro Yoshimura ◽  
Tatsuya Okubo
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Hydrothermal Conditions ◽  
High Temperature High Pressure

Defect formation in diamond single crystals grown from the Fe-Ni-C system at high temperature and high pressure

2001 ◽  
Vol 36 (13-14) ◽  
pp. 2283-2288 ◽  
Author(s):  
Long-Wei Yin ◽  
Mu-Sen Li ◽  
Feng-Zhao Li ◽  
Dong-Sheng Sun ◽  
Zhao-Yin Hao
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Defect Formation ◽  
Diamond Single Crystals

Hydrothermal approach and luminescent properties for the synthesis of orthoniobates GdNbO4:Ln3+ (Ln = Dy, Eu) single crystals under high-temperature high-pressure conditions

2014 ◽  
Vol 38 (9) ◽  
pp. 4249-4257 ◽  
Author(s):  
Min Yang ◽  
Xudong Zhao ◽  
Ying Ji ◽  
Fuyang Liu ◽  
Wei Liu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Solid State ◽  
Single Crystal ◽  
Single Crystals ◽  
Luminescent Properties ◽  
Solid State Lighting ◽  
Potential Applications ◽  
Hydrothermal Approach ◽  
High Temperature High Pressure

GdNbO4:Ln3+ (Ln = Dy, Eu) single crystal phosphors are very important for potential applications in optoelectronics and solid-state lighting for general illumination.

Synthesis of large diamond single crystals under high pressure and high temperature through effective utilization of the synthesis cavity

CrystEngComm ◽  
2018 ◽  
Vol 20 (29) ◽  
pp. 4127-4132 ◽  
Author(s):  
Yong Li ◽  
Yadong Li ◽  
Ying Wang ◽  
Jie Zhang ◽  
Mousheng Song ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Production Efficiency ◽  
Effective Utilization ◽  
Diamond Crystals ◽  
Diamond Single Crystals ◽  
Large Diamond

To make maximal use of the synthesis cavity and improve the production efficiency, we designed the double seed bed method to synthesize large diamond crystals under high pressure and high temperature (HPHT) conditions, and the results were both theoretically calculated and verified by experiments.

Synthesis and characterization of gem diamond single crystals in Fe-C system under high temperature and high pressure

2020 ◽  
Vol 531 ◽  
pp. 125371
Author(s):  
Zhanke Wang ◽  
Hongan Ma ◽  
Shuai Fang ◽  
Zhiqiang Yang ◽  
Xinyuan Miao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Synthesis And Characterization ◽  
Diamond Single Crystals

Electron microscopy of high-temperature and high-pressure as-grown diamond crystals

2001 ◽  
Vol 16 (11) ◽  
pp. 3023-3026 ◽  
Author(s):  
Long-Wei Yin ◽  
Mu-Sen Li ◽  
Jian-Jun Cui ◽  
Bin Xu ◽  
Jian-Hong Gong ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
High Temperature ◽  
System Analysis ◽  
Dislocation Motion ◽  
Dislocation Loops ◽  
Etch Pits ◽  
Growth Interface ◽  
Selected Area Electron Diffraction ◽  
Diamond Single Crystals

Electron microscopy was used to investigate microstructures of diamond single crystals prepared at high temperature and high pressure (HPHT) from the Fe–Ni–C system. Analysis through selected-area electron diffraction pattern suggests that the crystal structure of the HPHT-grown diamond is cubic; polycrystalline diamonds are contained in the diamond. Etch pits on the (111) surface of the diamond by scanning electron microscopy revealed the dislocation motion under the action of applied stress. An array of parallel dislocation lines taken with reflection of [110] was observed directly by transmission electron microscopy (TEM). Fringe distortions and concentric dislocation loops were examined by rotation moiré images, which arose from two overlapping (111) close-packed planes rotated with respect to each other at a 5° angle. The parallel dislocation lines, distorted fringes, and concentric dislocation loops might have derived from the micro-inclusions. The parallel layers with growth cellular interface by TEM provided direct evidence that the diamond grew from solution of carbon in the molten catalyst at HPHT and the growth interface diamond was not stable.

Synthesis and characterization of diamonds using C3H5N3O as an organic additive under high pressure and high temperature

CrystEngComm ◽  
2018 ◽  
Vol 20 (36) ◽  
pp. 5457-5464 ◽  
Author(s):  
Longsuo Guo ◽  
Hongan Ma ◽  
Liangchao Chen ◽  
Ning Chen ◽  
Xinyuan Miao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Organic Additive ◽  
Synthesis And Characterization ◽  
Diamond Single Crystals

In the NiMnCo–C system, diamond single crystals have been successfully synthesized by adding C3H5N3O as an organic additive under 5.5–6.2 GPa and 1280–1320 °C.

scholarly journals Research progress of large diamond single crystals under high pressure and high temperature

2020 ◽  
Vol 69 (23) ◽  
pp. 238101
Author(s):  
Yue You ◽  
Shang-Sheng Li ◽  
Tai-Chao Su ◽  
Mei-Hua Hu ◽  
Qiang Hu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Research Progress ◽  
Diamond Single Crystals ◽  
Large Diamond
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