| ZHAO Wei,WU Qi-bai,ZENG Guo-xun,ZHANG Hai-yan,CHEN Yi-ming,WANG Jia.Preparation and Microwave Absorption Properties of Mn-doped Zinc Oxide[J],39(5):55-57 |
| Preparation and Microwave Absorption Properties of Mn-doped Zinc Oxide |
| Received:May 17, 2010 Revised:October 10, 2010 |
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| DOI： |
| KeyWord:zinc oxides doped electromagnetic parameters microwave absorption |
| Author | Institution |
| ZHAO Wei |
Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China |
| WU Qi-bai |
Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China |
| ZENG Guo-xun |
1.Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China;2. State Key Laboratory of Millimeter Waves, Nanjing , China |
| ZHANG Hai-yan |
1.Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China;2. State Key Laboratory of Millimeter Waves, Nanjing , China |
| CHEN Yi-ming |
Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China |
| WANG Jia |
Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou , China |
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| Abstract: |
| Mn-doped zinc oxides were prepared through water bath method. By changing the concentration of manganese ions in the reaction solution, zinc oxides with different amount of manganese were obtained. The morphologies, chemical composition and the structures of the samples were investigated by SEM, EDX and XRD respectively. AV3618 vector network analyzer was employed to analyze the electromagnetic parameters of the doped samples in the frequency range of 2～ 16 GHz. The resultsindicate that Mn-dopedZnO is of single-phase structure and a rod-like outline with 0.3～ 0.5μm in diameter and 5～ 6μm in length. There is a dielectric loss peak located at 5～ 8 GHz in the dielectric spectrum and it has a trend of splitting into two peaks as Mn dopant increase. The frequency bandwidth which less than - 10 dB shifts to high frequency and becomes broad with the increase of Mn concentration. |
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