Radiolytic preparation of nanophase cubic cobalt metal particles

被引：12

作者：

Kapoor, S

Salunke, HG

Pande, BM

Kulshreshtha, SK ^{[1
]}

Mittal, JP

机构：

[1] Bhabha Atom Res Ctr, Div Chem, Chem Grp, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Tech Phys & Prototype Engn Div, Bombay 400085, Maharashtra, India

来源：

MATERIALS RESEARCH BULLETIN | 1998年 / 33卷 / 10期

关键词：

nanostructures; electron microscopy; X-ray diffraction;

D O I：

10.1016/S0025-5408(98)00136-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt nanoparticles have been prepared by gamma-radiolysis in three different forms, namely, aqueous sol, self-supporting powder, and dispersed on the surface of Al2O3, and characterized for their particle size distribution and metallic characteristics, using a variety of techniques. Air-stable ferromagnetic cobalt particles were found to possess the face-centered cubic structure with an average crystallite size of 5-6 nm. Magnetization studies carried out on frozen cobalt sol at 5 K also showed ferromagnetic behavior. The agglomeration of these crystallites produced particles in the range of congruent to 100 nm. (C) 1998 Elsevier Science Ltd.

引用

页码：1555 / 1562

页数：8

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