PROPERTIES OF BUCKYTUBES AND DERIVATIVES

被引：15

作者：

WANG, XK ^{[1
]}

LIN, XW ^{[1
]}

SONG, SN ^{[1
]}

DRAVID, VP ^{[1
]}

KETTERSON, JB ^{[1
]}

CHANG, RPH ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,MAT RES CTR,EVANSTON,IL 60208

来源：

CARBON | 1995年 / 33卷 / 07期

基金：

美国国家科学基金会;

关键词：

BUCKYTUBES; BUCKYBUNDLE; GLOW DISCHARGE; MAGNETIC PROPERTIES; TRANSPORT PROPERTIES;

D O I：

10.1016/0008-6223(95)00024-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structural, magnetic, and transport properties of bundles of buckytubes (buckybundles) have been studied. High-resolution electron microscopy (HREM) images have revealed the detailed structural properties and the growth pattern of buckytubes and their derivatives. The magnetic susceptibility of a bulk sample of buckybundles is -10.75 x 10(-6) emu/g for the magnetic field parallel to the bundle axes, which is approximately 1.1 times the perpendicular value and 30 times larger than that of C-60. The magnetoresistance (MR) and Hall coefficient measurements on the buckybundles show a negative MR at low temperature and a positive MR at a temperature above 60 K and a nearly linear increase in conductivity with temperature. The results show that a buckybundle may best be described as a semimetal. Using a stable glow discharge, buckybundles with remarkably large diameters (up to 200 mu m) have been synthesized. These bundles are evenly spaced, parallel, and occupy the entire central region of a deposited rod. HREM images revealed higher yield and improved quality buckytubes produced by this technique compared to those produced by a conventional are discharge.

引用

页码：949 / 958

页数：10

共 47 条

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