摘要
Micro-grains of wurtzite boron nitride(wBN)crystal have been observed in the region of 5.0-7.0 GPa pressure and 1800-2000 K temperature where cubic boron nitride has been synthesized in the presence of a catalyst.The wBN grain size is about 20-30nm.The presence of these micro-grains indicates that the pressure for wBN growth could be lower than that found in the previous work.
基金
Supported by the Natinoal Natural Science Foundation of China under Grant No.69576012。
