Controlling magnetism by means of electric fields is a key issue for the future development of low-power spintronics. The use of ferroelectricity in BaTiO3 crystals allows to tune the sharp metamagnetic transition temperature of epitaxially grown FeRh films and electrically drive a transition between antiferromagnetic and ferromagnetic order with only a few volts, just above room temperature.
R. O. Cherifi et al., Nature Materials 13, 345–351 (2014)
doi:10.1038/nmat3870
http://www.nature.com/nmat/journal/v13/n4/full/nmat3870.html
