Microwave absorption properties of TiN nanoparticles

Abstract: TiN nanoparticles with an average diameter of 15nm or so were prepared by the reaction of spongy Ti and NH4Cl at about 530°C. The electromagnetic parameters of the TiN nanoparticles/wax composite were measured by a coaxial line method. The nanoparticles exhibit good microwave absorbing ability owing to dielectric loss, and the measured reflection loss reaches a minimum value of −16.1dB at 13.8GHz. The interfaces between nanocrystalline TiN and the thin amorphous TiO2 layer on the TiN surface contribute dominantly to the high permittivity and good microwave absorbing properties. [Copyright &y& Elsevier]