Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres

IMR OpenIR

	Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres
	Y. J. Zhang; Q. Yao; Y. Zhang; T. Y. Cui; D. Li; W. Liu; W. Lawrence; Z. D. Zhang
	2008
发表期刊	Crystal Growth & Design
ISSN	1528-7483
卷号	8 期号:9 页码:3206-3212
摘要	Cobalt chains with lengths of up to 4-20 mu m, self-assembled by flowerlike cobalt submicrospheres, have been synthesized at 200 degrees C for 4 h by a solvothermal method with the surfactant poly(vinyl pyrrolidone) (PVP). The average diameter of individual flowerlike submicrospheres is 700-900 nm, which are composed of compact nanosheets with an average thickness of about 50 nm. The products were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS). The effects of synthetic conditions, such as reaction temperature and the amount of reducing agent, on the morphology and size of the chains were investigated. The growth mechanism of the chains was proposed, based on the evolution of the structure and the morphology with increasing the reaction time. The magnetic hysteresis loops at 5 and 295 K of the chains show ferromagnetic characteristics with coercivities of 347 and 90 Oe, respectively. Our work may shed light on the design fabrication of one-dimensional chainlike structures self-assembled by complex three-dimensional architectures of materials.
部门归属	[zhang, ya-jing; yao, qi; zhang, ying; cui, tie-yu; li, da; liu, wei; zhang, zhi-dong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [lawrence, whitmore] vienna univ technol, univ serv ctr transmiss elect microscopy, vienna, austria.;zhang, yj (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;yjzhang@imr.ac.cn
关键词	Large-scale Synthesis Field-induced Growth Hydrothermal Synthesis Fe-co(c) Nanocapsules Anisotropic Growth Nanoparticles Nanocrystals Nanowires Spheres Nanostructures
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WOS记录号	WOS:000258976100017
引用统计	被引频次：93[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33350
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Zhang,Q. Yao,Y. Zhang,et al. Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres[J]. Crystal Growth & Design,2008,8(9):3206-3212.
APA	Y. J. Zhang.,Q. Yao.,Y. Zhang.,T. Y. Cui.,D. Li.,...&Z. D. Zhang.(2008).Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres.Crystal Growth & Design,8(9),3206-3212.
MLA	Y. J. Zhang,et al."Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres".Crystal Growth & Design 8.9(2008):3206-3212.