Orbital Magnetic Moment Controlled Converse Magnetoelectric Effect in bcc-Co₃Mn/Fe/V/PMN-PT Multiferroic...

Area of Science:

• Materials Science
• Condensed Matter Physics
• Spintronics

Background:

• Multiferroic heterostructures offer potential for novel electronic devices.
• Controlling magnetic properties with electric fields is a key challenge.
• Orbital magnetic moment control is a promising strategy for giant magnetoelectric effects.

Purpose of the Study:

• To demonstrate multiferroic heterostructures with a giant converse magnetoelectric (CME) effect.
• To propose and validate a material design strategy based on orbital magnetic moment control.
• To develop room-temperature electric-field-controlled spintronic devices with ultra-low power consumption.

Main Methods:

• Material design strategy focusing on orbital magnetic moment control.
• Fabrication of (211)-oriented metastable body-centered cubic (bcc) ferromagnetic Co3Mn.
• Integration of Fe/V layers and deposition on piezoelectric Pb(Mg1/3Nb2/3)O3-PbTiO3(011).

Main Results:

• Experimental realization of a highly (211)-oriented bcc Co3Mn layer.
• Demonstration of a giant converse magnetoelectric (CME) effect.
• Achieved repeatable and nonvolatile magnetization vector switching.

Conclusions:

• The proposed material design strategy is effective for achieving giant CME effects.
• The developed heterostructure enables electric-field control of magnetism.
• This work paves the way for low-power, room-temperature spintronic devices.