Abstract
Novel methods of switching magnetism with electric fields and vice versa, and aiming at magnetoelectric (ME) data processing are reported. The patented MERAM uses the electric field control of exchange bias via an epitaxial Cr2O3 layer and exchange coupling to a Pt/Co/Pt trilayer. It promises to crucially reduce Joule energy losses. Magnetic switching of the electric polarization in a 3-1 composite of a vertically poled BaTiO3 thick film embedding CoFe2O4 nanopillars by a transverse magnetic field produces a regular surface polarization pattern with rectangular symmetry. Its possible use for data processing is discussed.
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