| 离子注入金红石单晶生成的金属Ni纳米晶的磁学性能研究 |
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| 引用本文： | 向霞,祖小涛,张传飞,雷家荣,朱莎,王鲁闵.离子注入金红石单晶生成的金属Ni纳米晶的磁学性能研究[J].强激光与粒子束,2005,17(3):473-476. |
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| 作者姓名： | 向霞 祖小涛 张传飞 雷家荣 朱莎 王鲁闵 |
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| 作者单位： | 1. 电子科技大学 应用物理系， 成都 610054； 2. 中国工程物理研究院 核物理与化学研究所，绵阳 621900；3. 美国密西根大学 核工程与放射科学系，安娜堡 48109 |
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| 基金项目： | 国家自然科学基金委-中国工程物理研究院联合基金资助课题(10376006) |
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| 摘 要： | 研究了能量为64keV、注量1×1017cm-2的Ni离子注入金红石TiO2单晶制备的植入金属纳米晶的微观结构和磁学性能。注入层的结构和磁学性能采用透射电子显微分析（TEM）和超导量子干涉磁强计（SQUID）进行分析。结果表明，金红石单晶中有尺寸为3～18nm的金属Ni纳米晶生成，注入区域基体明显非晶化。10K温度下金属Ni纳米晶的矫顽力约为16.8kA·m-1，比Ni块材的矫顽力大。样品的零场冷却/有场冷却（ZFC/FC）曲线表明，金属Ni纳米晶的截止温度约为85K。
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| 关 键 词： | 离子注入 金红石单晶 Ni纳米晶 显微结构 磁学性能 |
| 文章编号： | 1001-4322(2005)03-0473-04 |
| 收稿时间： | 2004/8/4 |
| 修稿时间： | 2004年8月4日 |
Magnetic properties of metal Ni nanoparticles prepared by ion implantation in rutile TiO2 single crystals |
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| XIANG Xia,ZU Xiao-tao,ZHANG Chuan-fei,LEI Jia-rong,ZHU sha,WANG Lu-min.Magnetic properties of metal Ni nanoparticles prepared by ion implantation in rutile TiO2 single crystals[J].High Power Laser and Particle Beams,2005,17(3):473-476. |
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| Authors: | XIANG Xia ZU Xiao-tao ZHANG Chuan-fei LEI Jia-rong ZHU sha WANG Lu-min |
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| Institution: | 1．Department of Applied Physics, University of Electronic and Technology of China, Chengdu 610054, China; 2．Institute of Nuclear Physics and Chemistry Research, CAEP, Mianyang 621900,China;3. Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI48109, USA |
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| Abstract: | keV Ni ion implantation of a dose of 1×10~(17 )cm-2 was performed at room temperature in rutile TiO1 single crystals in which metallic Ni nanoparticles formed directly. Transmission electron microscopy and a superconducting quantum interference device (SQUID) magnetometer were used to characterize the microstructure and magnetic properties of Ni nanoparticles in TiO1. Metal Ni nanopartilces with size ranging 3~18 nm was observed in the near surface of TiO1. A high-resolution electron microscopy (HREM) image indicated the Ni-implanted area had been entirely amorphized. Magnetic measurement indicated that the coercive force of Ni nanoparticles was about 16.8 kA·m-1 at 10 K, which was larger than that of bulk materials of Ni. The blocking temperature obtained from ZFC/FC curves was about 85 K. |
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| Keywords: | Ion implantation Rutile single crystals Ni nanoparticles Microstructure Magnetic properties |
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