Research Article

Nano Research

, Volume 1, Issue 4, pp 303-313

Open Access This content is freely available online to anyone, anywhere at any time.

Magnetic field-induced solvothermal synthesis of one-dimensional assemblies of Ni-Co alloy microstructures

  • Ming Jun HuAffiliated withDivision of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, School of Chemistry and Materials, University of Science and Technology of China
  • , Bin LinAffiliated withDivision of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, School of Chemistry and Materials, University of Science and Technology of China
  • , Shu Hong YuAffiliated withDivision of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, School of Chemistry and Materials, University of Science and Technology of China Email author 

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.

http://static-content.springer.com/image/art%3A10.1007%2Fs12274-008-8031-6/MediaObjects/12274_2008_8031_Fig1_HTML.jpg

Keywords

Ni-Co alloy microstructures magnetic field-induced assembly solvothermal synthesis