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所属单位：材料科学与技术学院
发表刊物：JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
关键字：Carbonyl iron particles Magnetic field orientation Impedance matching Complex permeability
摘要：Planar anisotropy carbonyl iron (PACI) particles were prepared from commercial spherical carbonyl iron particles through a high performance ball-milling technique. The paraffin composites with orientation of shape anisotropy field for these PACI particles were obtained by applying an external magnetic field during the fabrication process. The frequency-dependent complex permeability values of these prepared paraffin composites have been investigated in the frequency range of 1-18 GHz. The results demonstrate that the orientation of shape anisotropy field for these PACI particles can effectively increase the complex permeability and decrease the complex permittivity values. Benefit from the enhancement in the complex permeability and reduction in the complex permittivity, the better impedance matching condition can be obtained and thus the good microwave absorption performance can be achieved for the samples with enough magnetic field orientation time. (C) 2018 Elsevier B.V. All rights reserved.
ISSN号：0304-8853
是否译文：否
发表时间：2018-05-15
合写作者：Guo, Cheng,Shen, Shile,Liang, Juan,徐国跃
通讯作者：杨志鸿