Aggregated diamond nanorods, the densest and least compressible form of carbon

被引:96
作者
Dubrovinskaia, N
Dubrovinsky, L
Crichton, W
Langenhorst, F
Richter, A
机构
[1] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] Tech Fachhsch Wildau, D-15745 Wildau, Germany
关键词
D O I
10.1063/1.2034101
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report the synthesis of aggregated diamond nanorods (ADNRs) from fullerene C-60 at 20(1) GPa and 2200 degrees C using a multianvil apparatus. Individual diamond nanoroads are of 5-20 nm in diameter and longer than 1 mu m. The x-ray and measured density of ADNRs is similar to 0.2%-0.4% higher than that of usual diamond. The extremely high isothermal bulk modulus K-T=491(3) GPa [compare to K-T=442(4) GPa of diamond] was obtained by in situ x-ray diffraction study. Thus, ADNRs is the densest among all carbon materials and it has the lowest so far experimentally determined compressibility. (c) 2005 American Institute of Physics.
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