2004/04/21 by Dana A. Schwartz, Schwartz, Dana A., Daniel R. Gamelin +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0404518
arxiv created 2004/04/21 · openalex publication_date 2004/04/21 · arxiv updated 2009/12/01 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
The discovery of reversible 300 K ferromagnetic ordering in a diluted\nmagnetic semiconductor is reported. Switching of room-temperature\nferromagnetism between "on" and "off" states is achieved in Co2+:ZnO by lattice\nincorporation and removal of the native n-type defect, interstitial Zn.\nSpectroscopic and magnetic data implicate a double-exchange mechanism for\nferromagnetism. These results demonstrate for the first time reversible\nroom-temperature ferromagnetic ordering in a diluted magnetic semiconductor,\nand present new opportunities for integrating magnetism and conductivity in\nsemiconductor sensor or spin-based electronics devices.\n