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2007 Volume 24 Issue 2
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LIANG Zhong-Zhu, JIA Xiao-Peng, Hisao Kan-da, MA Hong-An, WANG Dong-Mei, LIU Wan-Qiang, YU Run-Ze. 2007: A New Dopant of NaN3 for High-Concentration-Nitrogen Diamond Synthesized by HPHT, Chinese Physics Letters, 24(2): 559-562.
Citation: LIANG Zhong-Zhu, JIA Xiao-Peng, Hisao Kan-da, MA Hong-An, WANG Dong-Mei, LIU Wan-Qiang, YU Run-Ze. 2007: A New Dopant of NaN3 for High-Concentration-Nitrogen Diamond Synthesized by HPHT, Chinese Physics Letters, 24(2): 559-562.
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A New Dopant of NaN3 for High-Concentration-Nitrogen Diamond Synthesized by HPHT

  • National Lab of Superhard Materials, Jilin University, Changchun 130012

  • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

  • Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

  • Available Online: 28/02/2007
  • Fund Project: the National Natural Science Foundation of China under Grant No 50572032
  • Nitrogen is successfully doped in diamond by adding sodium azide (NaN3) as the source of nitrogen to the graphite and iron powders. The diamond crystals with high nitrogen concentration, 1000-2200 ppm, which contain the same concentrations of nitrogen with natural diamond, have been synthesized by using the system of iron-carbonadditive NaN3. The nitrogen concentrations in diamond increase with the increasing content of NaN3. When the content of NaN3 is increased to 0.7-1.3 wt.%, the nitrogen concentration in the diamond almost remains in a nitrogen concentration range from 1250 ppm to 2200 ppm, which is the highest value and several times higher than that in the diamond synthesized by a conventional method without additive NaN3 under high pressure and high temperature (HPHT) conditions.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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A New Dopant of NaN3 for High-Concentration-Nitrogen Diamond Synthesized by HPHT

  • Available Online: 28/02/2007

Abstract: Nitrogen is successfully doped in diamond by adding sodium azide (NaN3) as the source of nitrogen to the graphite and iron powders. The diamond crystals with high nitrogen concentration, 1000-2200 ppm, which contain the same concentrations of nitrogen with natural diamond, have been synthesized by using the system of iron-carbonadditive NaN3. The nitrogen concentrations in diamond increase with the increasing content of NaN3. When the content of NaN3 is increased to 0.7-1.3 wt.%, the nitrogen concentration in the diamond almost remains in a nitrogen concentration range from 1250 ppm to 2200 ppm, which is the highest value and several times higher than that in the diamond synthesized by a conventional method without additive NaN3 under high pressure and high temperature (HPHT) conditions.

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