One-step solution fabrication of magnetic chains consisting of jingle-bell-shaped cobalt mesospheres

Autor:	Lin Guo, Qunpeng Zhong, Xiaogang Wen, Chinping Chen, Fang Liang, Weiguo Chu, Wangzhi Zheng, Shihe Yang, Nina Zhang
Rok vydání:	2006
Předmět:	Fabrication Materials science Physics and Astronomy (miscellaneous) chemistry.chemical_element Nanotechnology One-Step Coercivity chemistry.chemical_compound Chemical engineering Ferromagnetism chemistry Remanence Nano Ethylene glycol Cobalt
Zdroj:	Applied Physics Letters. 89:103105
ISSN:	1077-3118 0003-6951
Popis:	Using a one-step solution phase approach, the authors have synthesized uniform jingle bell-shaped cobalt mesopheres (550–750nm) and assembled the mesospheres into long magnetic chains (20–30μm). All of the cobalt spheres are hollow with ∼40nm thick shells but each contains an ∼200nm diameter solid ball. The nano- to mesoscale structures were realized via reaction of CoCl2∙6H2O and N2H4∙H2O in the presence of polyvinylpyrrolidone (PVP) in an ethylene glycol solution. Magnetic measurements show a coercivity of about 75Oe with a remnance of 9.6emu∕g at 300K. We propose a possible mechanism for the formation of the nanoto mesoscale structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8150a497fd51a234231efc010abadb42 https://doi.org/10.1063/1.2344933 Zobrazit plný text záznamu