Structure and Electromagnetic Properties of Nanocrystalline Sr1-xDyx(ZnZr)0.5 Fe11O19
Dy+3 doped strontium ferrites Sr1-Dyx (ZnZr)0.5 Fe11O19 (x=0, 0.01, 0.02 and 0.03) were prepared by the citrate sol-gel method. The X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry, and vector network analyzer were used for phase characterization and microwave absorption properties of obtained powders. X-ray diffraction identified that all samples were single phase with the M-type hexagonal-ferrite structure. The average crystallite size was about 48-62 nm. The microwave electromagnetic properties of the samples were studied at the frequency range from 12 GHz to 20 GHz. It was shown that small amounts of Dy+3 substitution could magically adjust to microwave electromagnetic parameters. The reflection loss indicates a minimum peak when ‘‘x=0.01’’, and the peak value was 41.0 dB. Also results indicate that a wide bandwidth of microwave absorption is obtained in the composite samples containing ferrite powders with composition ‘‘x=0.02’’ and ‘‘x=0.03’’ in Ku-band frequencies. It should be noted that thicknesses of the absorbers are only 1.7 mm.
No Supplementary Data
No Article Media
Document Type: Research Article
Publication date: April 1, 2014
More about this publication?
- Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites