Bond strengths of New Carbon-nitride-Related material C2N2(CH2)

被引:3
|
作者
Sougawa, M. [1 ]
Sumiya, T. [1 ]
Takarabe, K. [1 ]
Mori, Y. [1 ]
Okada, T. [2 ]
Gotou, H. [2 ]
Yagi, T. [2 ]
Yamazaki, D. [3 ]
Tomioka, N. [3 ]
Katsura, T. [3 ]
Kariyazaki, H. [4 ]
Sueoka, K. [4 ]
Kunitsugu, S. [5 ]
机构
[1] Okayama Univ Sci, 1-1 Ridai, Okayama 7000005, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwanoha, Chiba 2778581, Japan
[3] Okayama Univ, Inst Study Earths Interior, Yamada, Tottori 6820193, Japan
[4] Okayama Prefectural Univ, Soja, Okayama 7191197, Japan
[5] Ind Technol Ctr, Haga, Okayama 7011296, Japan
关键词
D O I
10.1088/1742-6596/377/1/012028
中图分类号
O59 [应用物理学];
学科分类号
摘要
A new carbon-nitride-related material C2N2(CH2) nanopletelet was synthesized by subjecting a precursor C3N4HxOy+Au in a laser-heating diamond anvil cell (LHDAC) to the pressure of 40 GPa and the temperature of 1200-2000 K. The synthesized C2N2(CH2) was accordingly found to be an orthorhombic unit cell of the space group Cmc2(1) with lattice constants a = 7.625 angstrom, b = 4.490 angstrom, and c = 4.047 angstrom. The bulk modulus B-0 was determined to be B-0 = 258 +/- 3.4 GPa, only the 60 % that of the diamond. C2N2(CH2) consists of the tetrahedrally coordinated C with three C-N single bond and the one C-C single bond, and the bridging carbon with the C-CH2-C bond. The C-N single bond length of the tetrahedron ranges from 1.444 to 1.503 angstrom. This bond length is close to the C-N single bond of 1.447 to 1.458 angstrom in the superhard beta-C3N4. The compressibility of the C-N and C-C single bond of C2N2(CH2) ranges from 0.976 to 0.982 with the pressure of 30 GPa. These values are very close to the compressibility of the C-N and C-C single bond of 0.978 to 0.982 in beta-C3N4, cubic-C3N4, and diamond.
引用
收藏
页数:4
相关论文
共 50 条