Elastic properties of ultrahard fullerites

被引：38

作者：

Blank, VD ^{[1
]}

Levin, VM

Prokhorov, VM

Buga, SG

Dubitskii, GA

Serebryanaya, NR

机构：

[1] Minist Sci & Technol Russian Federat, Res Ctr Superhard Mat, Troitsk 142092, Moscow Region, Russia

[2] Russian Acad Sci, Inst Spect, Troitsk 142092, Moscow Region, Russia

[3] Russian Acad Sci, Inst Biochem Phys, Ctr Acoust Microscopy, Moscow 117334, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 1998年 / 87卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.558716

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The elastic properties of C-60 fullerite samples synthesized under pressure P = 13.0 GPa at high temperatures were investigated using acoustic microscopy. The velocities of longitudinal (c(L) = 17-26 km/s) and transverse (c(T)=7.2-9.6 km/s) elastic waves in the samples were measured. It was established that the longitudinal sound velocity of ultrahard fullerites is higher than that of any other known solid. The bulk modulus of these ultrahard samples is higher than that of diamond and reaches a value greater than 1 TPa. The high bulk modulus, the relatively large shear moduli, and the substantial Poisson ratio indicate that the structure of the ultrahard fullerites is fundamentally different from that of diamond. (C) 1998 American Institute of Physics. [S1063-7761(98)01410-3].

引用

页码：741 / 746

页数：6

共 27 条

[1]

BLACKSLEE OL, 1970, J APPL PHYS, V41, P3373

[2] IS C(60) FULLERITE HARDER THAN DIAMOND [J].