采用水热法制备出不同比的Co0.5Zn0.5Fe2O4/C复合物,通过X射线衍射分析仪（XRD）、扫描电镜（SEM）、能谱仪（EDS）、振动样品磁强计（VSM）、网络分析仪对该复合物的形貌、电磁性能进行表征与分析。结果表明：Co0.5Zn0.5Fe2O4被碳包裹...采用水热法制备出不同比的Co0.5Zn0.5Fe2O4/C复合物,通过X射线衍射分析仪（XRD）、扫描电镜（SEM）、能谱仪（EDS）、振动样品磁强计（VSM）、网络分析仪对该复合物的形貌、电磁性能进行表征与分析。结果表明：Co0.5Zn0.5Fe2O4被碳包裹程度随碳相对含量的增加而增加;在频率为3-18 GHz范围内,Co0.5Zn0.5Fe2O4/C复合物的介电常数虚部和介电损耗随Co0.5Zn0.5Fe2O4的相对含量增加而增加;与Co0.5Zn0.5Fe2O4相比,Co0.5Zn0.5Fe2O4/C复合物的最大吸收峰有明显提高,且当0.5 g Co0.5Zn0.5Fe2O4与2 g葡萄糖混合时,制备的样品最大吸收峰在频率16 GHz左右可达到7 d B。展开更多
Nanocrystalline Co0.5Zn0.5Fe2O4 ferrite was synthesized by polyacrylamide gel method. The electromagnetic and microwave absorption properties of the ferrite were investigated. The results indicated that calcining temp...Nanocrystalline Co0.5Zn0.5Fe2O4 ferrite was synthesized by polyacrylamide gel method. The electromagnetic and microwave absorption properties of the ferrite were investigated. The results indicated that calcining temperature of the ferrite had a significant influence on the effective properties of the ferrite. When the calcining temperature was 500, 600 and 700℃, the average size of particles was 10, 30 and 80 nm, respectively. The dielectric loss （ε″） and magnetic loss （μ″） of the ferrite was around 0.65 and 0.29 at 8.2 GHz, respectively. Microwave absorption properties of the ferrites were simultaneously influenced due to the strong correlation between reflection loss and electromagnetic parameters of the ferrite.展开更多
文摘采用水热法制备出不同比的Co0.5Zn0.5Fe2O4/C复合物,通过X射线衍射分析仪（XRD）、扫描电镜（SEM）、能谱仪（EDS）、振动样品磁强计（VSM）、网络分析仪对该复合物的形貌、电磁性能进行表征与分析。结果表明：Co0.5Zn0.5Fe2O4被碳包裹程度随碳相对含量的增加而增加;在频率为3-18 GHz范围内,Co0.5Zn0.5Fe2O4/C复合物的介电常数虚部和介电损耗随Co0.5Zn0.5Fe2O4的相对含量增加而增加;与Co0.5Zn0.5Fe2O4相比,Co0.5Zn0.5Fe2O4/C复合物的最大吸收峰有明显提高,且当0.5 g Co0.5Zn0.5Fe2O4与2 g葡萄糖混合时,制备的样品最大吸收峰在频率16 GHz左右可达到7 d B。
基金the Natural Science Foundation of Liaoning,China under grant No.2040189.
文摘Nanocrystalline Co0.5Zn0.5Fe2O4 ferrite was synthesized by polyacrylamide gel method. The electromagnetic and microwave absorption properties of the ferrite were investigated. The results indicated that calcining temperature of the ferrite had a significant influence on the effective properties of the ferrite. When the calcining temperature was 500, 600 and 700℃, the average size of particles was 10, 30 and 80 nm, respectively. The dielectric loss （ε″） and magnetic loss （μ″） of the ferrite was around 0.65 and 0.29 at 8.2 GHz, respectively. Microwave absorption properties of the ferrites were simultaneously influenced due to the strong correlation between reflection loss and electromagnetic parameters of the ferrite.
