Magnetic properties of Fe3C ferromagnetic nanoparticles encapsulated in carbon nanotubes

被引：0

作者：

S. V. Komogortsev

R. S. Iskhakov

A. D. Balaev

A. G. Kudashov

A. V. Okotrub

S. I. Smirnov

机构：

[1] Russian Academy of Sciences,Kirensky Institute of Physics, Siberian Division

[2] Russian Academy of Sciences,Nikolaev Institute of Inorganic Chemistry, Siberian Division

[3] Krasnoyarsk State Pedagogical University,undefined

来源：

Physics of the Solid State | 2007年 / 49卷

关键词：

75.75.+a; 61.46.Df; 65.80.+n; 75.30.-m; 75.60.Nt;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The low-temperature dependences of magnetic characteristics (namely, the coercive force Hc, the remanent magnetization Mr, local magnetic anisotropy fields Ha, and the saturation magnetization Ms) determined from the irreversible and reversible parts of the magnetization curves for Fe3C ferromagnetic nanoparticles encapsulated in carbon nanotubes are investigated experimentally. The behavior of the temperature dependences of the coercive force Hc(T) and the remanent magnetization Mr(T) indicates a single-domain structure of the particles under study and makes it possible to estimate their blocking temperature TB = 420–450 K. It is found that the saturation magnetization Ms and the local magnetic anisotropy field Ha vary with temperature as ∼T5/2.

引用

页码：734 / 738

页数：4

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