Synthesis of α-Si3N4 crystallon by a solvothermal method at a low temperature of 180 °C.pdf

Physica B 428 (2013) 10– 13 Contents lists available at SciVerse ScienceDirect Physica B journal homepage: /locate/physb Synthesis of α-Si N crystallon by a solvothermal method at a low 3 4 temperature of 180 1C Zhao Wu n, Zhiyong Zhang, Jiangni Yun, Junfeng Yan, Tiangui You School of Information Science and Technology, Northwest University, Xian, Shaanxi 710069, People s Republic of China a r t i c l e i n f o a b s t r a c t Article history: Alpha silicon nitride (α-Si N ) crystallon has been synthesized by the solvothermal method with silica 3 4 Received 1 May 2013 powder as the Si source, sodium azide (NaN ) as the N source, and thiosemicarbazide as the low- 3 Received in revised form temperature additive at a low temperature of 180 ℃. The as-prepared sample has been characterized by 30 June 2013 x-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), x-ray photoelectron spectroscopy Accepted 3 July 2013 (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photolumines- Available online 9 July 2013 cence spectrum (PL, type F-7000, Hitachi, Japan). The as-prepared α-Si3N4 micron-rod crystallon i