Solvothermal synthesis of single-crystalline hexagonal cobalt nanofibers with high coercivity

Solvothermal synthesis of single-crystalline hexagonal cobalt nanofibers with high coercivity
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溶剂热合成高矫顽力单晶六方钴纳米纤维

DOI:
10.1016/j.matlet.2014.04.133
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发表时间:
2014-08
期刊:
影响因子:
3
通讯作者:
Ye, Fei
Ye, Fei
中科院分区:
材料科学3区
文献类型:
--
作者:
Dong, Xufeng;Qi, Min;Tong, Yu;Ye, Fei

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以乙二醇为还原剂,聚乙烯吡咯烷酮(PVP)和聚氧乙烯十二烷基醚(Brij30)为表面活性剂,采用溶剂热法制备了新型六方钴纳米纤维。Co纳米纤维的长度可达数百微米,直径小于100 nm。选区电子衍射(SAED)图案表明Co纳米纤维呈现单晶性质。在室温下,Co纳米纤维显示出明显的铁磁特征,其矫顽力为343.2 Oe,大于它们的本体对应物和大多数其他一维Co纳米材料。
Novel hexagonal cobalt nanofibers were solvothermally prepared by using ethylene glycol as a reducing agent, and polyvinyl pyrrolidone (PVP) and polyoxyethylene lauryl ether (Brij30) as surfactants. The lengths of the Co nanofibers are up to several hundreds of micrometers, and the diameters are less than 100 nm. The selected-area electron diffraction (SAED) pattern indicates the Co nanofibers present single-crystalline nature. At room temperature, the Co nanofibers show significant ferromagnetic feature with a coercivity of 343.2 Oe, which is larger than their bulk counterpart and most of the other 1D Co nano materials.
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