The influence of hollow structure on the magnetic characteristics for Fe(3)O(4) submicron spheres
文献类型：会议论文
| 作者 | Yan SJ ; Tang JK ; Liu P ; Gao Q ; Hong GY ; Zhen L |
| 出版日期 | 2011 |
| 会议名称 | 55th annual conference on magnetism and magnetic materials |
| 会议日期 | 2010-11-14 |
| 会议地点 | atlanta, ga |
| 关键词 | pH与温度敏感 可降解 水凝胶 |
| 通讯作者 | tang jk |
| 中文摘要 | in this paper, nearly monodisperse fe(3)o(4) hollow and solid submicron spheres were synthesized using a simple solvothermal method. the tem investigation clearly reveals the successful realization of the hollow structure of magnetite spherical particles by the method. the average diameter of the fe(3)o(4) hollow and solid submicron spheres is about 300 and 500 nm, respectively. the submicron spheres are composed of nanometer-sized grains, with grain sizes of 21 and 28 nm for the hollow and solid spheres, respectively. magnetic hysteresis measurements indicate that the hollow structure has higher coercive force and lower saturation magnetization than the solid submicron spheres. magnetization versus temperature curve shows a peak at 107 k in the zero-field-cooled (zfc) runs for the hollow structure, which corresponds to the blocking temperature of the nanograins. the blocking temperature correlates well with the volume of the nanograins according to stoner-wohlfarth theory. the hollow structure exhibits the magnetic properties of individual nanograins because of the weak coupling among them. however, the above-described feature is absent in the solid spheres, due to stronger magnetic coupling between the grains. (c) 2011 american institute of physics. [doi:10.1063/1.3563075] |
| 收录类别 | SCI收录期刊论文 |
| 会议录 | journal of applied physics
 |
| 会议录出版者 | amer inst physics, circulation & fulfillment div, 2 huntington quadrangle, ste 1 n o 1, melville, ny 11747-4501 usa |
| 会议录出版地 | 纽约 |
| 语种 | 英语 |
| ISSN号 | 0021-8979 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/47515]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_会议论文 |
| 推荐引用方式 GB/T 7714 | Yan SJ,Tang JK,Liu P,et al. The influence of hollow structure on the magnetic characteristics for Fe(3)O(4) submicron spheres[C]. 见:55th annual conference on magnetism and magnetic materials. atlanta, ga. 2010-11-14. |
入库方式： OAI收割
来源：长春应用化学研究所
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