Study on the high magnetic field processed ZnO based diluted magnetic semiconductors

Abstract

Diluted magnetic semiconductors with the unique advantage of simultaneously manipulating the spin and charge of electrons possess potential applications in spintronics and quantum computing, which attracts long-term tremendous attention. It is pivotal and meaningful for practical application that room temperature ferromagnetism has been acquired successively in ZnO based diluted magnetic semiconductors. Although the unclear origin of ferromagnetism hampers their further development, there is a consensus that their magnetic properties are susceptible to materials preparation process. As an extreme condition with high-intensity energy, indirect contact and controllability, high magnetic field has been applied to various materials fabrication. Similarly, high magnetic field is employed in the preparation of ZnO based diluted magnetic semiconductors to adjust micro structural and magnetic properties, such as enhancing Curie temperature, inducing the transition from paramagnetism or diamagnetism to ferromagnetism, and improving ferromagnetism, while exploring the ferromagnetism mechanism from another perspective. In this brief perspective, recent study on the high magnetic field processed ZnO based diluted magnetic semiconductors is reviewed.