Control of the magnetic and electric properties of low-dimensional SrRuO3–BaTiO3 superlattices

Artificial superlattices of SrRuO3 and BaTiO3 were formed on SrTiO3 (110) substrates with various stacking periodicities and their magnetic and electric properties were examined. The Curie temperature and the magnetization of the superlattices decreased as the stacking periodicity decreased. Antiferromagnetic behaviors and the anisotropy of resistivity were observed in a two- by five-layer (2/5) superlattice. Low-dimensional effects appeared strongly in the 2/5 superlattice.