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CoFe_2O_4/Co_3Fe_7-Co纳米核壳结构的微波吸收性能
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作者 王真 左亚路 席力 《纺织高校基础科学学报》 CAS 2017年第1期96-101,共6页
利用溶胶-凝胶法制备了不同粒径的CoFe_2O_4纳米颗粒,再通过H_2热还原法在颗粒表面形成Co_3Fe_7-Co磁性金属纳米壳层,研究不同退火温度、相同还原温度下不同样品的静态和动态磁性.结果表明,还原后样品的饱和磁化强度以及分别代表介电损... 利用溶胶-凝胶法制备了不同粒径的CoFe_2O_4纳米颗粒,再通过H_2热还原法在颗粒表面形成Co_3Fe_7-Co磁性金属纳米壳层,研究不同退火温度、相同还原温度下不同样品的静态和动态磁性.结果表明,还原后样品的饱和磁化强度以及分别代表介电损耗和磁损耗的复数介电常数的虚部和复磁导率的虚部都得到提高,且通过线传输理论计算得到,纳米核壳结构CoFe_2O_4/Co_3Fe_7-Co可有效提高材料的微波吸收性能. 展开更多
关键词 CoFe2O4/Co3Fe7-Co 纳米核壳结构 微波吸收
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Preparation and Magnetic Properties of (Fe_7Co_3)_(0.15)(SiO_2)_(0.85)Granular Solids Using the Sol-Gel Method
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作者 Wei CHEN Denglu HOU +4 位作者 Ying LIU Guide TANG Minggang ZHU Jianguo ZHAO Xiangfu NIE and Hongyan WU(Department of Physics, Hebei Normal University, Shijiazhuang 050016, Hebei, China)To whom correspondence should be addressed E-mail: dlhou@hebtu.edu.cn 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1999年第4期389-389,共1页
(Fe7Co3)0.15(SiO2)0.85 granular alloy solid was prepared successfully using sol-gel method. The samples with different reducing temperatures were investigated by X-ray diffractometer(XRD),transmission electron microgr... (Fe7Co3)0.15(SiO2)0.85 granular alloy solid was prepared successfully using sol-gel method. The samples with different reducing temperatures were investigated by X-ray diffractometer(XRD),transmission electron micrography(TEM) and vibrating sample magnetometer(VSM). The av-erage particIe sizes of the samples were also calculated from Scherrer formula. The magnetic properties of (Fe7Co3 )o. 15 (SiO2)0.85 were studied in detail. 展开更多
关键词 SIO2 fe7co3 Preparation and Magnetic Properties of Granular Solids Using the Sol-Gel Method
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