Enhanced microwave absorption in Ni/polyaniline nanocomposites by dual dielectric relaxations
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论文类型：期刊论文
发表时间：2008-01-07
发表刊物：APPLIED PHYSICS LETTERS
收录刊物：SCIE、EI、ESI高被引论文
卷号：92
期号：1
ISSN号：0003-6951
摘要：Ni/polyaniline (PANi) nanocomposites were prepared by chemical polymerization, and electromagnetic characteristics were then studied at 2-18 GHz. The permittivity of the Ni/PANi nanocomposite presents dual dielectric relaxations with increasing content of PANi to over 15.6 wt %, which is ascribed to a cooperative consequence of the core/shell interfaces and the dielectric PANi shells. Additionally, the permeability presents a strong natural resonance around 2-8 GHz, which is dominant among microwave magnetic loss. The proper matching of the permittivity and the permeability contributes to enhanced microwave absorption. (c) 2008 American Institute of Physics.
发表时间：2008-01-07