Tuning the magnetic properties of tetragonal CuO and Co doped by strain

Our aim is to grow tetragonal CuO and CoxCu1-xO films in coherent epitaxy on substrates of increasing lattice
constant (from LaAlO3 to MgO) and to study their structure, thanks to the unique characteristics of the INS2-
BM32 beamline which couples the capability of elaborating such kind of films by oxygen-plasma-assisted
MBE with the investigation of ultrathin films by GIXRD. Tetragonal CuO films are supposed to exhibit a high
strain-dependent Néel temperature. Doping with magnetic ions like e.g. cobalt could result in room
temperature semiconductors, with applications in spintronics. The structure of these thin films will be studied
as a function of the Co concentration.