材料科学
石墨烯
纳米复合材料
反射损耗
超顺磁性
氧化物
电介质
X射线光电子能谱
微波食品加热
介电损耗
化学工程
吸收(声学)
磁滞
复合材料
纳米技术
光电子学
复合数
磁化
冶金
磁场
凝聚态物理
工程类
物理
量子力学
作者
Qi Sun,Liangling Sun,Yingying Cai,Wei Ye,Song Xu,Tao Ji,Guoqiu Yuan
标识
DOI:10.1016/j.ceramint.2019.06.042
摘要
Fe3O4-intercalated reduced graphene oxide (Fe3O4-rGO) nanocomposites were synthesized by an in situ reduction process. The results of XRD and XPS analyses suggested the successful formation of a Fe3O4 crystal phase within the rGO sheets. The SEM and TEM images demonstrated that Fe3O4 was flaky and was inserted stably within the rGO layers to form a typical sandwich-like structure. The hysteresis loops revealed the superparamagnetic behavior of the Fe3O4-rGO nanocomposites at room temperature. The electromagnetic parameters revealed that Fe3O4-rGO nanocomposites exhibited multiple dielectric relaxation and magnetic resonance. The reflection loss revealed that the maximum loss was −49.53 dB at 6.32 GHz for a thickness of 3.4 mm while the highest effective absorption bandwidth was 2.96 GHz.
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