Co-Fe Nanodumbbells: Synthesis, Structure, and Magnetic Properties

被引：24

作者：

Liakakos, Nikos ^{[1
,2
,3
]}

Gatel, Christophe ^{[3
]}

Blon, Thomas ^{[1
,2
]}

Altantzis, Thomas ^{[4
]}

Lentijo-Mozo, Sergio ^{[1
,2
]}

Garcia-Marcelot, Cecile ^{[1
,2
]}

Lacroix, Lise-Marie ^{[1
,2
]}

Respaud, Marc ^{[1
,2
]}

Bals, Sara ^{[4
]}

Van Tendeloo, Gustaaf ^{[4
]}

Soulantica, Katerina ^{[1
,2
]}

机构：

[1] Univ Toulouse, F-31077 Toulouse, France

[2] UPS, LPCNO, INSA, CNRS UMR5215, F-31077 Toulouse, France

[3] CNRS, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France

[4] Univ Antwerp, Electron Microscopy Mat Res EMAT, B-2020 Antwerp, Belgium

来源：

NANO LETTERS | 2014年 / 14卷 / 05期

基金：

欧洲研究理事会;

关键词：

metal heterostructures; nanodumbbells; magnetic nanocrystals; epitaxial growth; cobalt; iron; AU-FE3O4; NANOPARTICLES; HYBRID NANOSTRUCTURES; ELECTRON-MICROSCOPY; PERMANENT-MAGNETS; FACILE SYNTHESIS; GOLD NANORODS; CDSE NANORODS; ATOMIC-SCALE; METAL TIPS; GROWTH;

D O I：

10.1021/nl500734k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the solution phase synthesis, the structural analysis, and the magnetic properties of hybrid nanostructures combining two magnetic metals. These nano-objects are characterized by a remarkable shape, combining Fe nanocubes on Co nanorods. The topological composition, the orientation relationship, and the growth steps have been studied by advanced electron microscopy techniques, such as HRTEM, electron tomography, and state-of-the-art 3-dimensional elemental mapping by EDX tomography. The soft iron nanocubes behave as easy nucleation centers that induce the magnetization reversal of the entire nanohybrid, leading to a drastic modification of the overall effective magnetic anisotropy.

引用

页码：2747 / 2754

页数：8

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