Abstract: In a method for coating a base body, a first target and a second target are arranged in a vacuum chamber. A base body to be coated is arranged in the vacuum chamber is heated to a coating temperature of less than 600° C. During sputtering with sputter gas ions, first target particles are liberated from the first target and second target particles are liberated from the second target and are deposited as coating particles on the base body. A first sputter rate is specified for the first target and a second sputter rate is specified for the second target such that, during the sputtering process, the coating is generated as an A15 phase with an intended stoichiometric ratio of the first target particles to the second target particles. A functional element has a base body and a coating of Nb3Sn applied directly on the surface of the base body.

Abstract: A micro-electronic electrode assembly having a first electrode arranged on a substrate is provided, wherein the first electrode has a thin layer made of a first electrode material having a solid state lattice, wherein the first electrode material oxidizes upon contact with oxygen-containing compounds and has a perovskite or perovskite-derived crystal structure, and wherein the electrode has a functional surface facing away from the substrate, a separation layer is arranged on the functional surface of the electrode, which prevents an oxidation of the electrode material in the region of the functional surface, the oxidation changing the properties of the electrode. An electrically insulating functional layer is arranged on the separation layer and a second electrode is arranged on the electrically insulating functional layer.

Abstract: A micro-electronic electrode assembly having a first electrode arranged on a substrate is provided, wherein the first electrode has a thin layer made of a first electrode material having a solid state lattice, wherein the first electrode material oxidizes upon contact with oxygen-containing compounds and has a perovskite or perovskite-derived crystal structure, and wherein the electrode has a functional surface facing away from the substrate, a separation layer is arranged on the functional surface of the electrode, which prevents an oxidation of the electrode material in the region of the functional surface, the oxidation changing the properties of the electrode. An electrically insulating functional layer is arranged on the separation layer and a second electrode is arranged on the electrically insulating functional layer.