Large anisotropic remnant magnetization tunability in (011)-La2/3Sr1/3MnO3/0.7Pb(Mg2/3Nb1/3)O3-0.3PbTiO3 multiferroic epitaxial heterostructures

Abstract

A large anisotropic remnant magnetization tunability was observed in multiferroic (011)-La2/3Sr1/3MnO3/0.7Pb(Mg2/3Nb1/3)O3-0.3PbTiO3 (LSMO/PMN-0.3PT) epitaxial heterostructures. The remnant magnetization along [100] direction was suppressed by an electric field applied to the substrate while the remnant magnetization along [011¯] was enhanced. The tunabilities of the remnant magnetization along the [100] and [011¯] directions are about −17.9% and +157% under electric field of +7.27 kV/cm, respectively. This large anisotropic remnant magnetization tunability may find potential applications in the electrically written and magnetically read memories.

Electric field manipulation of magnetic and transport properties in SrRuO3/Pb(Mg1/3Nb2/3)O3-PbTiO3 heterostructure

“…2, T C shifts from 117 K to 115 K with an electric field of 8 kV/cm. According to the earlier reports8910, the magnetization of the strain-mediated ME system is usually modified by altering the magnetic anisotropy, giving rise to an extrinsic CME effect. However, in the case of SRO/PMN-PT heterostructure, not only the magnetization but also T C varies with the electric field, suggesting that the CME effect in SRO film may have other coupling mechanism.…”

“…Up to now, the most used CME mode is the strain-mediated coupling17. By depositing the ferromagnetic component on ferroelectric/piezoelectric substrate, the electric-field-induced strain can remarkably manipulate magnetization, giving rise to large ME effects8910. Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMN-PT) and PbZr x Ti 1-x O 3 (PZT) are frequently selected as the ferroelectric/piezoelectric substrates due to their excellent piezoelectric and ferroelectric performance.…”

“…Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMN-PT) and PbZr x Ti 1-x O 3 (PZT) are frequently selected as the ferroelectric/piezoelectric substrates due to their excellent piezoelectric and ferroelectric performance. As for the ferromagnetic components, magnetic perovskites are ideal candidates because they exhibit abundant physical properties and are easy to grow epitaxially on the ferroelectric substrates10111213. In magnetic-perovskite-based ME heterostructures, the magnetism can be manipulated by means of altering the magnetic anisotropy10, affecting the phase separation1112, or adjusting the spin state of magnetic ions13 through the electric-field-induced strain.…”

“…As for the ferromagnetic components, magnetic perovskites are ideal candidates because they exhibit abundant physical properties and are easy to grow epitaxially on the ferroelectric substrates10111213. In magnetic-perovskite-based ME heterostructures, the magnetism can be manipulated by means of altering the magnetic anisotropy10, affecting the phase separation1112, or adjusting the spin state of magnetic ions13 through the electric-field-induced strain. In addition to strain-mediated mechanism, ferroelectric field-effect14 may also plays a role in tuning magnetic and transport properties of magnetic perovskites in those ME heterostructures due to the accumulation or depletion of charge carries at interface through ferroelectric polarization reversal151617.…”

The unique effect of in-plane anisotropic strain in the magnetization control by electric field

“…[1][2][3][4][5] Many experiments demonstrated that the electric field can modulate the magnetic properties of the FM films including Curie temperature, saturation moment, remanence and coercivity by changing the magnetic anisotropy via the electric field induced strain in the FE substrates. [5][6][7] Recently, the heterostructures composed of epitaxial perovsike manganite films and FE substrates 6,8,9 was considered as a promising platform for studying strain-mediated ME coupling and attracted intense attention due to the abundant physical content in the manganite films such as Jahn-Teller distortion, double-exchange coupling, phase separation and so on. Due to the strong interplay among lattice, spin, charge and orbital degrees of freedom, the lattice strain can largely modulate various novel physical phenomena of the manganite film by modifying the MnO 6 distortion and thus the Jahn-Teller coupling.…”