IHEP OpenIR  > 多学科研究中心
Preparation and Characterization of Ring-Shaped Co Nanomaterials
Guo, L; Liang, F; Wang, N; Kong, DS; Wang, SM; He, L; Chen, CP; Meng, XM; Wu, ZY; Wu ZY(吴自玉)
2008
发表期刊CHEMISTRY OF MATERIALS
卷号20期号:16页码:5163-5168
通讯作者[Guo, Lin ; Liang, Fang ; Wang, Ning] Beijing Univ Aeronaut & Astronaut, Sch Chem & Environm, Beijing 100083, Peoples R China ; [Kong, Desheng ; Wang, Siming ; He, Lin ; Chen, Chinping] Peking Univ, Dept Phys, Beijing 100871, Peoples R China ; [Meng, Xiangmin] Chinese Acad Sci, Lab Optoelect Funct Mat & Mol Engn, Beijing 100080, Peoples R China ; [Meng, Xiangmin] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China ; [Wu, Ziyu] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要Donut- or ring-shaped Co nanomaterials were successfully synthesized using the polymer-modified method, by which PVP is used as a surface modifier reagent. The synthesized products were structurally and morphologically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), whereas the magnetic characterization was performed by temperature- and field-dependent magnetization measurements. The results show that the rings have a h-Co nanostructure. The outer diameter is about 400-500 nm, inner diameter 150-250 nm, and the ring plane thickness similar to 120 nm. The magnetization measurements show a typical coercivity of about 112 Oe at 300 K and an almost vanishing coercivity, H-C approximate to 0 at T = 5 K. Numerical calculations using the packeage of object oriented micromagnetic framework (OOMMF) reveal a magnetization ground-state of flux closure structure, as expected for the geometric structure of the submicrometer-sized Co rings. This explains the observed hysteresis loops at low temperature with a vanishing small coercivity. A possible reaction process for the formation of the donut-shaped Co nanostructure is presented.
学科领域Chemistry; Materials Science
研究领域[WOS]Chemistry ; Materials Science ; Chemistry ; Materials Science
DOI10.1021/cm7025784
URL查看原文
语种英语
研究领域[WOS]Chemistry ; Materials Science ; Chemistry ; Materials Science
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号WOS:000258580500010
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240017
专题多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Guo, L,Liang, F,Wang, N,et al. Preparation and Characterization of Ring-Shaped Co Nanomaterials[J]. CHEMISTRY OF MATERIALS,2008,20(16):5163-5168.
APA Guo, L.,Liang, F.,Wang, N.,Kong, DS.,Wang, SM.,...&吴自玉.(2008).Preparation and Characterization of Ring-Shaped Co Nanomaterials.CHEMISTRY OF MATERIALS,20(16),5163-5168.
MLA Guo, L,et al."Preparation and Characterization of Ring-Shaped Co Nanomaterials".CHEMISTRY OF MATERIALS 20.16(2008):5163-5168.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
7493.pdf(874KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Guo, L]的文章
[Liang, F]的文章
[Wang, N]的文章
百度学术
百度学术中相似的文章
[Guo, L]的文章
[Liang, F]的文章
[Wang, N]的文章
必应学术
必应学术中相似的文章
[Guo, L]的文章
[Liang, F]的文章
[Wang, N]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。