Co-sputtered carbon-nickel nanocomposite thin films

被引：5

作者：

Ferlauto, AS ^{[1
]}

Alvarez, F ^{[1
]}

Fonseca, FC ^{[1
]}

Goya, GF ^{[1
]}

Jardim, RF ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

来源：

ISMANAM 2003: METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS | 2004年 / 20-21卷

关键词：

amorphous carbon; nanocomposites; nanoparticles; superparamagnetic;

D O I：

10.4028/www.scientific.net/JMNM.20-21.700

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon-nickel nanocomposite thin films were prepared by co-sputtering a graphite target with a small Ni chip attached on its surface. The Ni concentration in the films was controlled by the size of the Ni chip and measured by in-situ X-ray photoelectron spectroscopy. Transmission electron microscopy images showed that the films have a granular structure with nanosized Ni particles embedded in an amorphous carbon matrix. The Ni particles have an average diameter of 4 nm, with a rather narrow size distribution. Magnetization measurements revealed that films are superparamagnetic and present blocking temperatures T-B < 15 K.

引用

页码：700 / 704

页数：5

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