Room temperature ferromagnetism was observed in Mn-doped zinc stannate (ZTO:Mn) nanowires, which were prepared by chemical vapor transport. Structural and magnetic properties and Mn chemical states of ZTO:Mn nanowires were investigated by X-ray diffraction, superconducting quantum interference device (SQUID) magnetometry and X-ray photoelectron spectroscopy. Manganese predominantly existed as Mn2+ and substituted for Zn (MnZn) in ZTO:Mn. This conclusion was supported by first-principles calculations. MnZn in ZTO:Mn had a lower formation energy than that of Mn substituted for Sn (MnSn). The nearest neighbor MnZn in ZTO stabilized ferromagnetic coupling. This observation supported the experimental results.
Experimental and first-principles study of ferromagnetism in Mn-doped zinc stannate nanowires
Rui Deng, Hang Zhou, Yong-Feng Li, Tom Wu, Bin Yao, Jie-Ming Qin, Yu-Chun Wan, Da-Yong Jiang, Qing-Cheng Liang, Lei Liu; Experimental and first-principles study of ferromagnetism in Mn-doped zinc stannate nanowires. J. Appl. Phys. 21 July 2013; 114 (3): 033910. https://doi.org/10.1063/1.4815884
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