Diamagnetism of natural fullerene-like carbon

被引：23
|
作者：
Kovalevski, VV
Prikhodko, AV
Buseck, PR
机构：
[1] Russian Acad Sci, Karelian Res Ctr, Inst Geol, Lab Shungites, Petrozavodsk 185910, Russia
[2] St Petersburg State Tech Univ, Dept Expt Phys, St Petersburg 195251, Russia
[3] Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA
[4] Arizona State Univ, Dept Chem Biochem, Tempe, AZ 85287 USA
来源：
CARBON | 2005年 / 43卷 / 02期
基金：
美国国家科学基金会;
关键词：
shungite; transmission electron microscopy; magnetic properties; microstructure;
D O I：
10.1016/j.carbon.2004.09.030
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：
Carbon from shungite rocks from Karelia (Russia) displays an increase in diamagnetism between ca. 90 and 150 K. The diamagnetic effect is largest for samples that contain twisted graphene layers up to 100 nm across, preferentially oriented, and with nanometer-sized pores as seen in high-resolution transmission electron microscopy images. No increase in diamagnetism was observed for shungite rocks containing carbon with randomly oriented graphene layers. Such diamagnetism has been observed for doped fullerites but has not previously been reported for amorphous natural carbon. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：401 / 405
页数：5
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