Chemical synthesis and L12 ordering of CrPt3 nanoparticles

被引：4

作者：

Tomou, A. ^{[1
]}

Panagiotopoulos, I. ^{[1
]}

Tzitzios, V. ^{[2
]}

Li, Wanfeng ^{[3
]}

Hadjipanayis, G. C. ^{[3
]}

机构：

[1] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

[2] NCSR Demokritos, Inst Mat Sci, Athens 15310, Greece

[3] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 334卷

关键词：

Nanoparticle; Pt3Cr; Chemical ordering; L12; ordering;

D O I：

10.1016/j.jmmm.2013.01.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cr-Pt nanoparticles of different compositions around the ferrimagnetic Pt3Cr have been synthesized with the thermolytic method and proper adjustment of the Pt(acac)(2) and Cr(acac)(2) mole ratios. The as prepared particles have a size of (5.5 +/- 1.0) nm but after heat-treatment at 850 degrees C for 2 h an inhomogeneous microstructure consisting of clustered nanoparticles with variable sizes 5-50 nm is obtained. Chemical ordering to the L1(2) phase up to S=0.83 has been achieved for the nanoparticles with optimized stoichiometry while moderate coercivity values up to 380 Oe are achieved. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：107 / 110

页数：4

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