摘要:
A preferred embodiment of the invention provides a device having a structural element, which has magnetic properties that are dependent on the hydrogen content in the structural element, the structural element containing hydrogen. In a preferred embodiment, the magnetic properties of a material are altered by the introduction of hydrogen, for example in order to convert an otherwise ferromagnetic material into a paramagnetic material. For example, in a structural element made from a ferromagnetic base material, a first region can be converted with the aid of hydrogen into a paramagnetic region which adjoins a second, hydrogen-free region. This makes it possible to fabricate magnetic heterostructures from a single base material without it being necessary to alter the geometric dimensions of the structural element, for example by lithographic structuring and subsequent etching.