Voltage control of magnetism with magneto-ionic approaches: Beyond voltage-driven oxygen ion migration

Magneto-ionics is an emerging field in materials science where voltage used as energy-efficient means to tune magnetic properties, such magnetization, coercive field, or exchange bias, by voltage-driven ion transport. We first discuss the emergence of magneto-ionics last decade, its core aspects, and key avenues research. also highlight recent progress approaches made during past few years. then focus on “structural-ion” approach developed our research group which mobile ions are already present target material potential advantages challenges. Particular emphasis given energetic structural benefits using nitrogen ion, well unique manner ionic motion occurs CoN FeN systems. Extensions into patterned systems textures generate imprinted structures presented. Finally, we comment prospects future directions for practical realizations fields, neuromorphic computing, random-access memory, micro- nano-electromechanical