Characteristic
Iron nitrides are inorganic chemical compounds of iron and nitrogen.Iron has five nitrides observed at ambient conditions, Fe2N, Fe3N4, Fe4N, Fe7N3 and Fe16N2. They are crystalline, metallic solids. Group 7 and group 8 transition metals form nitrides that decompose at relatively low temperatures - iron nitride, Fe2N decomposes under loss of molecular nitrogen at around 400 °C and formation of lower-nitrogen content iron nitrides.They are insoluble in water.
Application
Colloidal solution of magnetic iron nitride nanoparticles is a way to create ferrofluids.
Iron nitrides also make the strongest naturally magnetic material.