Coevaporation of CoPt nanoparticles

被引：18

作者：

Castaldi, L ^{[1
]}

Giannakopoulos, K ^{[1
]}

Travlos, A ^{[1
]}

Niarchos, D ^{[1
]}

机构：

[1] NCSR Demokritos, IMS, Athens 15310, Greece

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 14期

关键词：

D O I：

10.1063/1.1802378

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Co50Pt50 nanoparticles were codeposited on thermally oxidized Si substrates by electron beam evaporation, at a temperature of the substrate of 700 to 750 degreesC. The codeposition led to a perfect mixture of the Co and Pt elements within the three-dimensional nanoislands, which exhibit a mean diameter between similar to18 and similar to20 nm. The postannealing treatment of the CoPt nanograins resulted in the progressive crystallization of the L1(0) ordered phase and, consequently, in the progressive magnetic hardening of the samples with a maximum coercivity of similar to5.6 kOe. (C) 2004 American Institute of Physics.

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页码：2854 / 2856

页数：3

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