Voelkl, E. [P:(DE-HGF)0] ; Zheng, F. [P:(DE-Juel1)165965] ; Migunov, V. [P:(DE-Juel1)159136] ; Beleggia, M. [P:(DE-HGF)0] ; Dunin-Borkowski, R. E. [P:(DE-HGF)0]