Magnetic properties of carbon coated Fe, Co and Ni nanoparticles

被引：34

作者：

Wu, Aibing ^{[1
]}

Yang, Xuwei ^{[1
]}

Yang, Hua ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 513卷

基金：

中国国家自然科学基金;

关键词：

Fe@C; Co@C; Ni@C; Magnetic properties; Nanoparticles; GRAPHITE-ENCAPSULATED NANOCRYSTALS; SOLID-STATE METATHESIS; RAMAN-SPECTROSCOPY; AMORPHOUS-CARBON; METAL-OXIDES; CARBIDE NANOPARTICLES; ELECTRON DIFFRACTION; NITRIDE; NICKEL; COBALT;

D O I：

10.1016/j.jallcom.2011.10.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon coated Fe, Co and Ni nanoparticles (Fe@C, Co@C and Ni@C) have been fabricated by an efficient solid-state route using melamine as carbon source. The structure and morphology of Fe@C, Co@C and Ni@C nanoparticles were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It is shown that the structure and morphology of Fe@C are different from those of Co@C and Ni@C. The crystallinity of carbon in Fe@C, Co@C and Ni@C nanoparticles was examined by Raman spectroscopy. The results indicate that the graphitization degree of carbon decreases in the order Fe@C > Co@C > Ni@C. Additionally, the reactions involved in the syntheses are speculated. The magnetic properties of Fe@C, Co@C and Ni@C nanoparticles were tested by VSM at room temperature. The variations of magnetic properties of Co@C and Ni@C with the increase of reactive temperatures are discussed respectively. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：193 / 201

页数：9

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