Abstract The high pressure and high temperature (HPHT) method is successfully used to synthesize jadeite in a temperature range of 1000℃-1400℃ under a pressure of 3.5 GPa. The initial raw materials are Na2SiO3·9H2O and Al2(SiO3)3. Through the HPHT method, the amorphous glass material is entirely converted into crystalline jadeite. We can obtain the good-quality jadeite by optimizing the reaction pressure and temperature. The measurements of x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) and Raman scattering indicate that the properties of synthesized jadeite at 1260℃ under 3.5 GPa are extremely similar to those of the natural jadeite. What is more, the results will be valuable for understanding the formation process of natural jadeite. This work also reveals the mechanism for metamorphism of magma in the earth.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51172089 and 51171070) and the Graduate Innovation Fund of Jilin University, China (Grant No. 2016065).
Characteristics of urea under high pressure and high temperature Shuai Fang(房帅), Hong-An Ma(马红安), Long-Suo Guo(郭龙锁), Liang-Chao Chen(陈良超), Yao Wang(王遥), Lu-Yao Ding(丁路遥), Zheng-Hao Cai(蔡正浩), Jian Wang(王健), Xiao-Peng Jia(贾晓鹏). Chin. Phys. B, 2019, 28(9): 098101.
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Effect of FeS doping on large diamond synthesis in FeNi–C system Jian-Kang Wang(王健康), Shang-Sheng Li(李尚升), Quan-Wei Jiang(蒋全伟), Yan-Ling Song(宋艳玲), Kun-Peng Yu(于昆鹏), Fei Han(韩飞), Tai-Chao Su(宿太超), Mei-Hua Hu(胡美华), Qiang Hu(胡强), Hong-An Ma(马红安), Xiao-Peng Jia(贾晓鹏), Hong-Yu Xiao(肖宏宇). Chin. Phys. B, 2018, 27(8): 088102.
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