| ZHANG Ze-yang,LIU Xiang-xuan,WU You-peng,WANG Xuan-jun.Influence of Heat-treatment on the Microstructure and Microwave Absorbing Properties of SrFe12O19[J],(1):109-112 |
| Influence of Heat-treatment on the Microstructure and Microwave Absorbing Properties of SrFe12O19 |
| Received:August 27, 2011 Revised:February 20, 2012 |
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| DOI： |
| KeyWord:strontium ferrite heat-treatment matching thickness microwave absorbing property |
| Author | Institution |
| ZHANG Ze-yang |
No.503 Faculty, The Second Artillery Engineering University, Xi'an, China |
| LIU Xiang-xuan |
No.503 Faculty, The Second Artillery Engineering University, Xi'an, China |
| WU You-peng |
No.503 Faculty, The Second Artillery Engineering University, Xi'an, China |
| WANG Xuan-jun |
No.503 Faculty, The Second Artillery Engineering University, Xi'an, China |
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| Abstract: |
| M-type strontium ferrite powders were prepared by sol-gel-autocombustion and the micro-structures, morphology and the electromagnetic properties of powders were characterized. Impedance matching solution maps was designed to obtain the matching frequency and the matching thickness. Based on the match-ingfrequency and the matching thickness, microwave absorption of the material was studied. The results show that with increasing of temperature the shape of particles change from rice-like to hexagon. It is found that an-nealing temperatures could affect the microwave absorbing properties of SrFe12O19. When annealing tempera-ture is 1000℃ with a 5.2 mm thickness, the maximum reflection loss becomes - 38 dB at 6 GHz, and the - 5 dB bandwidth reaches 4.5 GHz. |
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