Multidielectric polarizations in the core/shell Co/graphite nanoparticles

被引：162

作者：

Zhang, X. F. ^{[1
]}

Guan, P. F. ^{[2
]}

Dong, X. L. ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Liaoning, Peoples R China

[2] Tohoku Univ, World Premier Int Res Ctr, Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 22期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBE; SPECTROSCOPY; ONIONS; PERMITTIVITY; NANOCAPSULES; PARTICLES;

D O I：

10.1063/1.3446868

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hybrid core/shell Co/graphite nanoparticles synthesized by an arc-discharge method exhibit an enhanced dielectric loss property in the frequency range of 2-18 GHz. Complex permittivity expressed by Debye dipolar polarization approximate show that three kinds of dielectric polarizations coexist in this hybrid system. Combined with theoretical simulation, we further clarified that the dielectric polarizations are ascribed to the high defective graphite shells, and additional interfacial polarizations arising from the special core/shell architecture. (C) 2010 American Institute of Physics. [doi:10.1063/1.3446868]

引用

页数：3

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