Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10714260 | Physica B: Condensed Matter | 2012 | 7 Pages |
Abstract
A simple wet chemical method was used to synthesize Fe-doped MnO2 composites with iron amount ranging from 0 to 90 M percent. X-ray diffraction, electron probe micro-analyzer, scanning electron microscopy and vector network analyzer were employed to investigate the effect of iron doping on the microstructure and electromagnetic performance of the as-synthesized samples. Results indicate that relative small content of Fe-doping cannot change the α-MnO2 structure but can promote the formation of hollow-structural morphology. The as-obtained products are transformed into a novel compound (Fe0.67Mn0.33)OOH with the increase of Fe-doping to 30 mol%. The possible formation mechanism was proposed in detail. Compared with the pure MnO2, the Fe-doped samples exhibit decreased dielectric loss but increased magnetic loss with increasing the iron content below 20 mol% while relatively poor electromagnetic properties with the iron content above 30 mol%.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Jing Hui, Duan Yuping, Liu Zhuo, Zhang Jia, Liu Shunhua,