Electromagnetic wave absorption properties of Fe3O4 octahedral nanocrystallines in gigahertz range

被引：31
作者：
Kong, Jing [1 ,2 ]
Liu, Jiurong [1 ,2 ]
Wang, Fenglong [1 ,2 ]
Luan, Liqiang [1 ,2 ]
Itoh, Masahiro [3 ]
Machida, Ken-ichi [3 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China
[3] Osaka Univ, Ctr Adv Sci & Innovat, Suita, Osaka 5650871, Japan
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2011年 / 105卷 / 02期
基金：
高等学校博士学科点专项科研基金;
关键词：
MAGNETIC-PROPERTIES; WIDE BANDWIDTH; FERRITE; ABSORBER; NANOCOMPOSITES; PERMEABILITY; NANOPARTICLES; FILMS; ZN;
D O I：
10.1007/s00339-011-6593-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Large-scale octahedral Fe3O4 nanocrystallines with crystalline size of 100-500 nm were synthesized by a facile solvent-thermal method for electromagnetic wave application. The Fe3O4 nanocrystallines showed a higher saturation magnetization (M (s) ) value of 86.8 emu/g and larger coercivity (H (cj) ) value of 255 Oe than that of magnetite polycrystallines because of their good crystallization and dispersion. The epoxy resin composites with 40 vol% Fe3O4 powders provided good electromagnetic wave absorption performance (RL < -20 dB) in the range of 2.0-4.3 GHz over the absorber thicknesses of 3.5-6.8 mm. A minimum RL value of -47 dB was observed at 3.1 GHz with a thickness of 4.8 mm.
引用
收藏
页码：351 / 354
页数：4
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