Catalytic Growth of N-doped MgO on Mo(001)
  A simple pathway to grow thin films of N-doped MgO (MgO:N), which has been found experimentally to be a ferromagnetic d0 insulator, is presented. It relies on the catalytic properties of a Mo(001) substrate using growth of Mg in a mixed atmosphere of O2 and N2. Scanning tunneling spectroscopy reveals that the films are insulating and exhibit an N-induced state slightly below the conduction band minimum. 
M. Grob, M. Pratzer, M. Le\v{z}ai\'c and M. Morgenstern
cond-mat.mes-hall