Now, the researchers have developed a material based on a thin layer of cobalt mononitride (CoN). In this, by applying an electric field, the accumulation of N ions at the interface between the layer and a liquid electrolyte in which the layer has been placed is possible to be controlled. The arrangement of material is in such a way that it allows the magnetic properties to be controlled when the voltage is applied and even when the voltage is removed. As the external voltage stimulus disappears, the magnetization of the system can be reduced or increased. This can be done by depending on the thickness of the material and considering the protocol of how was the voltage applied previously.