Colloidal synthesis and characterization of tetrapod-shaped magnetic nanocrystals

被引：123

作者：

Cozzoli, P. Davide

Snoeck, Etienne

Garcia, Miguel Angel

Giannini, Cinzia

Guagliardi, Antonietta

Cervellino, Antonio

Gozzo, Fabia

Hernando, Antonio

Achterhold, Klaus

Ciobanu, Nelica

Parak, Fritz G.

Cingolani, Roberto

Manna, Liberato

机构：

[1] INFM, CNRS, Natl Nanotechnol Lab, Unita Ric IIT, I-73100 Lecce, Italy

[2] CNRS, CEMES, F-31055 Toulouse, France

[3] UCM, Dept Mat Phys, Madrid 28230, Spain

[4] UCM, Inst Appl Magnetism, Madrid 28230, Spain

[5] CNR, Ist Cristallog, I-70126 Bari, Italy

[6] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[7] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[8] Tech Univ Munich, Phys Dept E17, D-85747 Garching, Germany

来源：

NANO LETTERS | 2006年 / 6卷 / 09期

关键词：

D O I：

10.1021/nl061112c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tetrapod-shaped maghemite nanocrystals are synthesized by manipulating the decomposition of iron pentacarbonyl in a ternary surfactant mixture under mild thermal conditions. Adjustment of the reaction parameters allows for the systematic tuning of both the width and the length of the tetrapod arms, which grow preferentially along the < 111 > easy axis direction. Such degree of control leads to modulation of the magnetic behavior of the nanocrystals, which evolves systematically as their surface magnetization phase and shape anisotropy are progressively increased.

引用

页码：1966 / 1972

页数：7

共 46 条

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