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线团状硫化钴纳米链的湿化学法合成及磁性表征(英文)

Synthesis of Uniform Clew-Like Cobalt Sulfide Nanochains by Mild Solution Chemical Route and Their Magnetic Property

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【Author】 Zhang Yahui1,Guo Lin2,Liu Kang3,He Lin3,Chen Jinping3 (1. Northeastern University at Qinhuangdao,Qinhuangdao 066004,China) (2. Beijing University of Aeronautics and Astronautics,Beijing 100083,China) (3. Peking University,Beijing 100871,China)

【机构】东北大学秦皇岛分校；北京航空航天大学；北京大学；

【摘要】采用湿化学法在乙二醇体系中,利用以氯化钴为反应物、水合肼为还原剂制备获得的金属钴纳米粒子为前驱物,以低温前驱物硫化法在高分子PVP的修饰下成功的合成出了直径200～250nm,长度可达10μm的"线团状"硫化钴自组装纳米链。产物的场冷及零场冷曲线在T<350K时明显分离,表明样品呈现明显的磁性各向异性,推测由于其准一维形貌结构,使得样品临界势垒温度TB大于350K。更多还原

【Abstract】 Highly regular clew-like Co4S3 nanostructure intertwisted from ultra long nanochains which were self assembled by irregular nanoparticles were synthesized by a simple and mild chemical solution route and the magnetic property of the product was investigated. The results show that MZFC(T) and MFC(T) curves separate widely from each other even with the temperature going up to 350 K. It indicates the presence of a magnetic anisotropy potential barrier even at T > 350 K which cause the blocking temperature,TB,to exceed 350 K.更多还原

【关键词】硫化钴；磁性能；纳米链；
【Key words】 CoS； magnetic property； nanochain；

【基金】 National Natural Science Foundation of China(20673009)

【文献出处】稀有金属材料与工程 ,Rare Metal Materials and Engineering , 编辑部邮箱 ,2009年S2期

【分类号】TB383.1
【被引频次】4
【下载频次】265

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