Nanophase Hexagonal Ferrite for Microwave Absorption:Preparation and Performance Research
ZHANG Xiong LI Min DOU Danruo (The Materials Science & Technology School, Tongji University, Shanghai 200092)
Electromagnetic pollution is an increasing environmental problem in modern society. The pollution comes mainly from microwaves. The general methods to conquer it are shielding and absorpition. Ferrite is an ordinary material used to absorb microwave. This study adopted the citrate Sol-gel method to prepare the nanophase hexagonal ferrite with doping metal to get high performance microwave materials. The crystal style of the ferrite was confirmed by XRD and the grain size of the particle is measured by atomic force microscope (AFM). Finally the absorbency of this ferrite was tested. The dB-loss of microwave intensity field was between 10~25 dB. It has proved to be an effective material to absorb environmental microwave.
【CateGory Index】： TB383