期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 19, 期 6, 页码 1588-1592出版社
ELSEVIER
DOI: 10.1016/S1003-6326(09)60075-3
关键词
NiZnCo ferrite; hydrothermal; permeability; permittivity; saturation magnetization
A simple hydrothermal route with cetyltrimethyl ammonium bromide (CTAB) was proposed for directly synthesizing single-crystalline NiZn ferrite at 160 degrees C. X-ray diffraction patterns and micrographs indicate that products consist of spinel ferrite nanogranulars. The dielectric constant of NiZnCo ferrite is about 11 and the imaginary part of complex permittivity is 1.3. The saturation magnetization (M-s) of NiZn ferrite improves from 0.041 to 0.074 A.m(2)/g for Ni0.49Zn0.5Co0.01Fe1.98O4. The dielectric contant of NiZn ferrite increases from 7 to 11 with a cobalt stoichiometry of 0.01. The real part mu' of complex permeability for NiZnCo ferrite reaches 3 at 1 GHz. The imaginary part mu '' of NiZnCo ferrite has a value higher than 1.2 within 0.7-3.0 GHz. Through the incorporation of the magnetic fillers, the low dielectric constant of the composites may meet the requirements of impedance matching to achieve the maximal absorption of the electromagnetic energy in megahertz frequency range.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据