Converse Magnetoelectric Effect in Epitaxial Co2MnSi/Pb(Mg1/3Nb2/3)O3-PbTiO3 Multiferroic Heterostructures

We experimentally study a strain-meditated converse magnetoelectric (CME) effect in multiferroic heterostructures consisting of Co2MnSi and Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT). To investigate the CME effect, Co2MnSi films are grown on PMN-PT(001) at various growth temperatures by molecular beam epitaxy. Using magneto-optical Kerr-effect and strain measurements, we find that the remanent magnetization state only for the L2(1)-ordered Co2MnSi/PMN-PT is modulated by the application of the lattice strain, while that for the B2-ordered Co2MnSi/PMN-PT is insensitive to the strain. We conclude that the formation of L2(1)-ordered structure is needed to obtain an effective CME effect in the Co2MnSi/PMN-PT multiferroic heterostructure.

Automated summary

In this study, we experimentally investigated the strain-mediated converse magnetoelectric effect in multiferroic heterostructures. The results showed that only the heterostructure with a specific structure can modulate its remanent magnetization state under strain, while strain has no effect on heterostructures with other structures. Therefore, the formation of a specific structure is crucial for achieving an effective converse magnetoelectric effect.