Capping layer effects in the structure and composition of Co nanoparticle ultrathin films -: art. no. 032510

被引：17

作者：

Arbiol, J

Peiró, F

Cornet, A

Clavero, C

Cebollada, A

Armelles, G

Huttel, Y

机构：

[1] Univ Barcelona, EME, Dept Elect, E-08028 Barcelona, Spain

[2] CSIC, Inst Microelect Madrid, CNM, E-28760 Madrid, Spain

[3] CSIC, Inst Ciencia Mat Madrid, ICMM, Madrid 28029, Spain

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 03期

关键词：

D O I：

10.1063/1.1854746

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, we present the correlation of the magnetic and structural properties of Co nanoparticles deposited by sputtering on Si3N4 substrates at different temperatures, and covered with different capping layers, two insulators, AlN and MgO, and a metal, Pt. High-resolution transmission electron microscopy shows the formation of CoPt3 and CO2N, for the Pt and AIN capping layers, respectively, giving to a significant change of the magnetic behavior. When using a cap of MgO, energy-filtered transmission electron microscopy shows an oxidized shell covering the Co nanoparticles with thickness decreasing as the deposition temperature increases, explaining the changes in the magnetic response induced by the MgO capping layer. (C) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

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