Auger electron spectroscopy (AES) and photoelectron spectroscopy (XPS) combined with a well‐controlled ion mill is applied for the study of nitrogen implanted into Fe(001) single crystal and iron polycrystalline samples. Chemical information is extracted from both, the NKLL Auger and N(1s) XPS spectra. Results obtained prove that not all the implanted nitrogen is in a strong nitride bonding.