© 2014 Elsevier Ltd. All rights reserved. Green synthesis of iron oxide thin-films grown from recycled iron foils were done by high-vacuum evaporation and thermal oxidation processes. Dynamic hysteresis loops of samples of grain-oriented oxide were studied with a RF-resonant circuit and its residual magnetic field was related with the perturbing RF-resonant field. Phase formation and structural parameters in all iron oxide thin-films was evaluated by X-ray diffraction as well as Raman studies have demonstrated that structural properties can be connected with its magnetic behavior based on discontinuous grain growth. In the near future, sustainable devices could be designed using special properties of iron oxide thin-films from recycling processes at effective cost.