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

来源：

23RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY (AIRAPT-23) | 2012年 / 377卷

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

页数：4

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