Nano Research

Article Title

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


Ni Co alloy microstructures, magnetic fi eld-induced assembly, solvothermal synthesis


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 fi eld is proposed.

Graphical Abstract


Tsinghua University Press