Amorfa magnetiska nanostrukturer
Tidsperiod: 2015-01-01 till 2018-12-31
Budget: 3 420 000 SEK
Magnetic materials have played an important role in building up our modern information based society. Magnets are used in power generators, transformers, and for data storage, to mention a few examples of applications that we use in our daily life. In conventional electronic devices only the charge of the electron is being used. However, spin-based electronics, or spintronics, utilizing the manipulation of both charge and spin degrees of freedom is actively being investigated.The purpose of this project is to find new and more efficient means to tune and control the magnetic state of nanostructured magnetic materials. The project includes the design of low-dimensional magnetic materials and devices in which the magnetic properties of amorphous metal alloys are tuned by doping. Ion implantation will be used to dope the materials and study how the doping affects the magnetic properties. Nanostructures will be defined by ion irradiation through lithographically produced masks. The advantage of this technique compared to ordinary topographic nanopatterning is that magnetic nanostructures may be created within matrices.The doping effects, as well as finite-size effects and interlayer coupling in multilayers of amorphous materials, will be investigated in detail, with the aim of getting a deeper fundamental understanding of the underlying physics of amorphous magnetic systems, as well as creating prototypical devices for room-temperature spintronic applications.