Study On Synthesis And Magnetism Of Ni-based Amorphous Alloyed Nano-materials

Amorphous alloy has the properties of short range ordering and long range disordering, and nano-material has novel physic and chemical properties. It will lead to more outstanding advantage after combining the characters of amorphous and nano-scale particles, such as high resistance, anti-radialization and anti-causticity. Ni-based amorphous alloy nanoparticles have been studied extensively due to their potential applications, especially for catalytic function.Ni-based amorphous alloy nanoparticles were reduced by sodium borohydride in a novel microemusion system (water/sodium, oleic/hexane) at room temperature. X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared spectroscopy (IR) and differential scanning calorimetry (DSC) were carried to measure the nanoparticles from different aspects. The magnetization behavior was studied by vibrating sample magnetometer (VSM). XRD and TEM results showed that these particles were amorphous alloy with narrow deviation, the average particles size was 15nm, IR DSC XRD and TEM results supported that the nanoparticles with oleic acid coated the surface of the particles. The magnetic property showed a super-paramagnetism corresponding to the nano-scale of the particles.LB technology can well used to control the thickness and structure of film very well in molecular level and orderly arrange molecular in soft reaction condition. In our research, LB technology is applied to self-assemble synthesis of Ni-based amorphous alloyed nanoparticles. The π-A isotherm were learned on Langmuir instrument, which illustrated the well filmforming ability of Ni-based amorphous alloyed nanoparticles.