| Fe3O4纳米粒子的制备与超顺磁性 |
| |
| 引用本文： | 秦润华,姜炜,刘宏英,李凤生.Fe3O4纳米粒子的制备与超顺磁性[J].功能材料,2007,38(6):902-903,907. |
| |
| 作者姓名： | 秦润华 姜炜 刘宏英 李凤生 |
| |
| 作者单位： | 1. 南京理工大学,国家特种超细粉体工程技术研究中心,江苏,南京,210094;中北大学,物理系,山西,太原,030051
2. 南京理工大学,国家特种超细粉体工程技术研究中心,江苏,南京,210094 |
| |
| 摘 要： | 采用红外光谱、X射线衍射、透射电子显微镜和振动样品磁强计对用化学共沉淀法制备出的纳米Fe3O4粒子进行了形貌、结构及磁性能表征.其中,红外和XRD测试结果表明制备出的Fe3O4粒子的物态和晶相结构;透射电子显微镜照片表明制备出的纳米四氧化三铁成球性好,且大部分四氧化三铁粒子的粒径在10nm左右;磁化曲线表明制备出的Fe3O4粒子无剩磁和矫顽力,具有超顺磁性.并且,将制备出的纳米Fe3O4粒子和块状Fe3O4的磁性能进行对比,探讨了Fe3O4由块状的亚铁磁性向纳米级的超顺磁性转变的原因.
|
| 关 键 词： | Fe3O4 纳米粒子 超顺磁性 |
| 文章编号： | 1001-9731（2007）06-0902-02 |
| 修稿时间： | 2006-11-152007-02-06 |
Preparation and superparamagnetism of Fe3O4 nanoparticles |
| |
| QIN Run-hua,JIANG Wei,LIU Hong-ying,LI Feng-sheng.Preparation and superparamagnetism of Fe3O4 nanoparticles[J].Journal of Functional Materials,2007,38(6):902-903,907. |
| |
| Authors: | QIN Run-hua JIANG Wei LIU Hong-ying LI Feng-sheng |
| |
| Abstract: | Fe3O4 nanoparticles were prepared by chemical co-precipitation,and characterized by IR,XRD,TEM and VSM(vibrating sample magnetometer).XRD and IR results revealed that the state of matter and crystal structure of the as-deposited Fe3O4 particles.TEM showed that the size of the prepared product is about 10nm.Magnetization curves indicated that the as-deposited Fe3O4 particles without remanent magnetization(Mr) and coercivity(Hc),and with superparamagnetism.The magnetism of Fe3O4 nanoparticles and block Fe3O4 were compared,and the transformation from the sub-ferromagnetism to the superparamagnetism were interpreted. |
| |
| Keywords: | Fe3O4 nano-particles superparamagnetism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
