| Structure and magnetic properties of amorphous and polycrystalline Fe3O4 thin films |
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| 引用本文： | 唐晓莉 张怀武 苏桦 钟智勇 荆玉兰. Structure and magnetic properties of amorphous and polycrystalline Fe3O4 thin films[J]. 中国有色金属学会会刊, 2006, 16(B01): 249-252 |
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| 作者姓名： | 唐晓莉 张怀武 苏桦 钟智勇 荆玉兰 |
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| 作者单位： | School of Micro-electronics and Solid-state Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| 基金项目： | Project （90306015） supported by the National Natural Science Foundation of China, and the Youths＇ Teacher Supporting Project of University of Electronic Science and Technology of China （UESTC）. |
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| 摘 要： | Half-metallic Fe3O4 films prepared by-DC magnetron reactive sputtering with a tantalum（Ta） buffer layer was investigated. Primary emphasis is placed on the structural impact on its magnetic properties. The experimental results show that the amorphous Fe3O4 films exhibit a superparamagnetic response at a large-scale from 20 nm to 150 nm, and the magnetoresistance （MR） isn＇t detected. By contrast, the polycrystalline Fe3O4 films possess large saturation magnetization Ms of 420 A/（kg.cm） and a clear magnetoresistance with a field of 40 kA/m. The unusual properties for the amorphous Fe3O4 film are attributed to the existing large density of the similar structure as anti-phase boundaries in the film.
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| 关 键 词： | 四氧化三铁 非晶态薄膜 多晶薄膜 结构 磁阻性质 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-25 |
Structure and magnetic properties of amorphous and polycrystalline Fe3O4 thin films |
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| TANG Xiao-li, ZHANG Huai-wu, SU Hua, ZHONG Zhi-yong, JING Yu-lan. Structure and magnetic properties of amorphous and polycrystalline Fe3O4 thin films[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(B01): 249-252 |
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| Authors: | TANG Xiao-li ZHANG Huai-wu SU Hua ZHONG Zhi-yong JING Yu-lan |
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| Abstract: | |
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| Keywords: | half-metal Fe3O4 spintronic devices magnetoresistance |
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