1. Projects One day of experimental work and evaluation of obtained results, as much time is spent on preparation by studying listed references and writing a report. The report should be written as a scientific report including; i) abstract, ii) introduction including a brief description of studied materials, iii) description of performed experiments, iv) presentation of experimental results, v) discussion and conclusions, and vi) references. 1.Magneto-Optical Kerr Effect (MOKE) Wednesday 11/3 2015 Studies of magnetic anisotropy in thin magnetic films by use of MOKE. The films have been fabricated using UHV sputtering technique. The project will consist of the following parts: i)Literature study of MOKE ii) Tutorial on how to use the experimental MOKE equipment iii) Experimental recording of MOKE curves iv)Study of magnetic anisotropy of different thin films and/or multilayers Projektledare: Fridrik Magnus, email fridrik.magnus@physics.uu.sefridrik.magnus@physics.uu.se

2. 2. Electromagnetic losses in soft magnetic materials - Wednesday 11/3 2015 Magnetic measurements on electrical steel (silicon-iron); the measurements will be performed at Surahammars Bruk on materials differing in sheet thickness and Si-content and in an experimental setup called an Epstein frame. The energy loss per field cycle for the different samples will be determined for different AC-field amplitudes and AC-field frequencies. From the measured total loss, you should be able to identify different contributions (hysteresis loss, eddy current loss and anomalous eddy current loss). Projektledare: Arvid Broddefalk, email Arvid.Broddefalk@sura.seArvid.Broddefalk@sura.se 3 & 4 Magnetic nanoparticles as a diagnostic tool (2 projects) 1) Mon 2/3 and 2) Wed 11/3 Magnetic nanoparticles have found numerous applications in bioscience, including magnetic bioseparation, targeted drug delivery, contrast agents in magnetic resonance imaging, etc. In this project you will study how magnetic nanoparticles can be used in bioassays, where the presence or absence of a biological substance in sample is revealed by the response of the nanoparticles to an AC magnetic field. The nanoparticles, functionalized with oligo-nucleotides are mixed with different amounts of amplified DNA molecules. The amplified DNA molecules are the result of molecular recognition events between probe molecules and target molecules, where the target molecules could originate from a patient sample. One project group will use an AC susceptometer for read-out of the assay, while the other group will use an magneto-optical method for read-out. In the magneto-optical method, the scattering of light is affected by the presence of amplified DNA molecules. Projektledare: Mattias Strömberg, email Mattias.Stromberg@angstrom.uu.se magneto-optical method and Rebecca Bejhed, email rebecca.bejhed@angstrom.uu.se AC susceptometerMattias.Stromberg@angstrom.uu.serebecca.bejhed@angstrom.uu.se

3. 5. New Rare Earth Free Permanent magnets for green energy production - Monday 2/3 sofia.kontos@angstrom.uu.se 6. Magnetisk mikrostruktur i 2D arrayer av NiFe mikrometerstora element - Monday 2/3 Arrayerna har tillverkats genom att använda optisk litografi. Arrayerna ska undersökas med AFM för att studera topografi och MFM för att studera domänkonfigurationen i elementen. Exempel på frågor att fundera över: Varför ser domänkonfigurationen ut som den gör? Inverkan av ett yttre magnetfält? Vad bestämmer den magnetisk anisotropin i elementen? Referenser: T. Shinjo et al., Science 289, 930 (2000); S. H. Liou et al., J. Magn. Magn. Mater. 226-230, 1270-1272 (2001); R. D. Gomez, J. Appl. Phys. 85, 6163 (1999). Projektledare: Klas Gunnarsson, email klas.gunnarsson@angstrom.uu.seklas.gunnarsson@angstrom.uu.se