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Nano Research 2008, 1(4): 303-313 https://doi.org/10.1007/s12274-008-8031-6
Research Article | Open Access | Issue | Published: 01 October 2008

Magnetic Field-Induced Solvothermal Synthesis of One-Dimensional Assemblies of Ni–Co Alloy Microstructures

Show Author's Information Ming Jun Hu,  Bin Lin,  Shu Hong Yu( )
Division of Nanomaterials & ChemistryHefei National Laboratory for Physical Sciences at MicroscaleSchool of Chemistry and MaterialsUniversity of Science and Technology of ChinaHefei230026China
Keywords:
solvothermal synthesis, Ni–Co alloy microstructures, magnetic field-induced assembly
Cite this article:
Jun Hu M, Lin B, Yu SH. Magnetic Field-Induced Solvothermal Synthesis of One-Dimensional Assemblies of Ni–Co Alloy Microstructures. Nano Research, 2008, 1(4): 303-313. https://doi.org/10.1007/s12274-008-8031-6
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Abstract Full text Electronic supplementary material About this article

One-dimensional magnetic Ni–Co alloy microwires with different microstructures and differently shaped building blocks including spherical particles, multilayer stacked alloy plates, and alloy flowers, have been synthesized by an external magnetic field-assisted solvothermal reaction of mixtures of cobalt(Ⅱ) chloride and nickel(Ⅱ) chloride in 1, 2-propanediol with different NaOH concentrations. By adjusting the experimental parameters, such as precursor concentration and Ni/Co ratio, Ni–Co alloy chains with uniform diameters in the range 500 nm to 1.3 μm and lengths ranging from several micrometers to hundreds of micrometers can be obtained. A mechanism of formation of the one-dimensional assemblies of magnetic Ni–Co microparticles in a weak external magnetic field is proposed.


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About this article

Magnetic Field-Induced Solvothermal Synthesis of One-Dimensional Assemblies of Ni–Co Alloy Microstructures

Show Author's information Ming Jun Hu, Bin Lin, Shu Hong Yu( )
Division of Nanomaterials & ChemistryHefei National Laboratory for Physical Sciences at MicroscaleSchool of Chemistry and MaterialsUniversity of Science and Technology of ChinaHefei230026China

Abstract

One-dimensional magnetic Ni–Co alloy microwires with different microstructures and differently shaped building blocks including spherical particles, multilayer stacked alloy plates, and alloy flowers, have been synthesized by an external magnetic field-assisted solvothermal reaction of mixtures of cobalt(Ⅱ) chloride and nickel(Ⅱ) chloride in 1, 2-propanediol with different NaOH concentrations. By adjusting the experimental parameters, such as precursor concentration and Ni/Co ratio, Ni–Co alloy chains with uniform diameters in the range 500 nm to 1.3 μm and lengths ranging from several micrometers to hundreds of micrometers can be obtained. A mechanism of formation of the one-dimensional assemblies of magnetic Ni–Co microparticles in a weak external magnetic field is proposed.

Keywords: solvothermal synthesis, Ni–Co alloy microstructures, magnetic field-induced assembly

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Received: 31 July 2008
Accepted: 25 August 2008
Published: 01 October 2008
Issue date: August 2008

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© Tsinghua Press and Springer-Verlag 2008

Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC) (Grants Nos. 50732006, 20621061, and 20671085), Anhui Development Fund for Talented Personnel (2005CB623601) and Anhui Education Committee (2006Z027, ZD2007004-1), the Specialized Research Fund for the Doctoral Program (SRFDP) of Higher Education State Education Ministry, and the Partner-Group of the Chinese Academy of Sciences-the Max Planck Society.

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