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Fabrication and Properties of Carbon- Encapsulated Cobalt Nanoparticles over NaCl by CVD

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dc.contributor.author Li, Haipeng
dc.contributor.author Li, Yue
dc.contributor.author Zhang, Yongguang
dc.contributor.author Liang, Chunyong
dc.contributor.author Wang, Hongshui
dc.contributor.author Li, Baoe
dc.contributor.author Adair, Desmond
dc.contributor.author Bakenov, Zhumabay
dc.date.accessioned 2016-11-07T06:12:04Z
dc.date.available 2016-11-07T06:12:04Z
dc.date.issued 2016-09-27
dc.identifier.citation Li, H., Li, Y., Zhang, Y., Liang, C., Wang, H., Li, B., … Bakenov, Z. (2016). Fabrication and Properties of Carbon-Encapsulated Cobalt Nanoparticles over NaCl by CVD. Nanoscale Research Letters, 11, 432. http://doi.org/10.1186/s11671-016-1645-9 ru_RU
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/1847
dc.description.abstract Carbon-encapsulated cobalt (Co@C) nanoparticles, with a tunable structure, were synthesized by chemical vapor deposition using Co nanoparticles as the catalyst and supported on a water-soluble substrate (sodium chloride), which was easily removed by washing and centrifugation. The influences of growth temperature and time on the structure and magnetic properties of the Co@C nanoparticles were systematically investigated. For different growth temperatures, the magnetic Co nanoparticles were encapsulated by different types of carbon layers, including amorphous carbon layers, graphitic layers, and carbon nanofibers. This inferred a close relationship between the structure of the carbon-encapsulated metal nanoparticles and the growth temperature. At a fixed growth temperature of 400 °C, prolonged growth time caused an increase in thickness of the carbon layers. The magnetic characterization indicated that the magnetic properties of the obtained Co@C nanoparticles depend not only on the graphitization but also on the thickness of the encapsulated carbon layer, which were easily controlled by the growth temperatures and times. Optimization of the synthesis process allowed achieving relatively high coercivity of the synthesized Co@C nanoparticles and enhancement of its ferromagnetic properties, which make this system promising as a magnetic material, particularly for high-density magnetic recording applications. ru_RU
dc.language.iso en ru_RU
dc.publisher Nanoscale Research Letters ru_RU
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Carbon-encapsulated metal nanoparticles ru_RU
dc.subject Sodium chloride ru_RU
dc.subject Chemical vapor deposition ru_RU
dc.subject Magnetic property ru_RU
dc.title Fabrication and Properties of Carbon- Encapsulated Cobalt Nanoparticles over NaCl by CVD ru_RU
dc.type Article ru_RU

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