A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The safety receptacles of the invention can be used in all use situations including both residential and industrial applications to increase safe use of electrical receptacles in residential applications in particular and to decrease industrial liabilities. The respective individual layers are successively deposited on a substrate body. The winding may comprise a clip, a preformed coil, a stamped conductive foil, or an etched trace using chemical or laser etching.