Seminarium Fizyki Ciała Stałego

GaN enriched with Mn constitutes worthwhile material system whose magnetic characteristics are set by the d-level occupancy of the Mn ions. Basing on the results of a wide temperature range magnetometry (down to 0.5 K) obtained for very high quality GaN:Mn crystals (grown by HVPE method) we will re-visit the crystal field model and show that aided by EPR results, an accurate spin counting of d5 and d4 levels is possible – constituting an indispensable characterization tool for these commercially important crystals. Next we will proceed to much concentrated epitaxial (Ga,Mn)N layers with Mn contents approaching 10%. Here, superexchange-mediated ferromagnetism develops at the low end of cryogenic temperatures. The magnetic anisotropy of such systems will be discussed and some possible means of its control will be presented.
Uwaga
Seminarium w trybie Hybrydowym
Faculty of Physics room 0.06
patrz instrukcja :
instrukcja: (pdf file)

Attention
The seminar in the Hybrid mode
Faculty of Physics room 0.06
see instruction :
instruction: (pdf file)