Abstract
We have deposited self-assembled BiFeO(3)-CoFe(2)O(4) (BFO-CFO) thin films on (100)-oriented SrRuO(3)-buffered Pb(Mg(1/3)Nb(2/3))(0.62)Ti(0.38)O(3) (PMN-38PT) single crystal substrates. These heterostructures were used for the study of real-time changes in the magnetization with applied DC electric field (E (DC) ). With increasing E (DC) , a giant magnetization change was observed along the out-of-plane (easy) axis. The induced magnetization changes of the CFO nanopillars in the BFO/CFO layer were about ΔM/M (rDC) = 93% at E (DC) = -3 kv/cm. A giant converse magnetoelectric (CME) coefficient of 1.3 × 10(-7) s/m was estimated from the data. By changing E (DC) , we found multiple(N ≥ 4) unique possible values of a stable magnetization with memory on the removal of the field.