Microwave absorbing mechanism of soft magnetic alloy Fe85Si2Al6Cr7
(Department of Electronic Science and Technology, Huazhong University of Science and Technology,
Wuhan 430074, China)
Wuhan 430074, China)
Abstract: The powders of amorphous nanocrystalline Fe85Si2Al6Cr7 were prepared by high energy ball milling for different times, and measured by XRD and network analyzer. The results show that: 1) nanocrystalline microstructure remarkably improves the microwave permeability, and the permittivity is controlled effectively; 2) by adding proper dyeing auxiliary (such as copper phthalocyanine), the magnetic properties of powders are improved when the particle sizes milled are excessively small.
Key words: microwave absorbing mechanism; complex permeability; complex permittivity; ball-milling time