THE STRUCTURE AND THE MAGNETIC PROPERTIES OF COBALT NANOPARTICLES IN THE HIGH-POROUS AMORPHOUS CARBON MATRIX

被引：0
|
作者：
Komogortsev, S. V. [1 ]
Iskhakov, R. S. [1 ]
Maltsev, V. K. [1 ]
Chekanova, L. A. [1 ]
Krayuhin, I. A. [1 ]
Momot, N. A. [2 ]
Barnakov, Ch. N. [3 ]
机构：
[1] LV Kirensky Inst Phys SB RAS, Krasnoyarsk, Russia
[2] Siberian Fed Univ, UNESCO Dept, Krasnoyarsk, Russia
[3] RAS, SB, Inst Coal & Coal Chem, Kemerovo, Russia
来源：
PHYSICS, CHEMISTRY AND APPLICATION OF NANOSTRUCTURES | 2009年
基金：
美国国家科学基金会;
关键词：
D O I：
10.1142/9789814280365_0065
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Structure and magnetic properties of Co nanoparticles in the high-porous amorphous carbon matrix are presented. The average size of cobalt particles is 20 nm. The Co nanoparticles are ferromagnetic and characterized by the local magnetic anisotropy fields H-a = 10 kOe. The material consists of fcc and hcp Co phases and highly defective phase with high concentration of stacking faults. There are no variations observed in the line shape of the NMR spectrum of Co particles at different temperatures. This implies that there are no polymorphous transformations inside Co particles with temperature.
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页码：268 / +
页数：2
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