Chinese Optics Letters, 2016, 14 (11): 113101, Published Online: Aug. 2, 2018  

Regulation of the magnetic behavior by adjusting oxygen stoichiometry in ZrOx film

Author Affiliations
1 Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
2 Key Laboratory of Micro and Nano Photonic Structure (Ministry of Education), Fudan University, Shanghai 200433, China
Abstract
The mechanism of ferromagnetic ordering in ZrOx film is investigated by both experimental observation and theoretical calculation. Magnetic measurements reveal that the magnetic properties can be adjusted from diamagnetism to ferromagnetism by varying the oxygen stoichiometry. We find that oxygen-rich defects can be responsible for the observed magnetic properties by taking the measurements of x-ray photoelectron spectroscopy and room temperature photoluminescence spectra. Density functional theory calculations further confirm that the ferromagnetic order is mainly driven by the exchange interaction between the oxygen antisites and the neighboring anion atoms.

Huanfeng Zhu, Jing Li, Kun Chen, Xinyu Yi, Shuai Cheng, Yafei Yuan, Fuxi Gan. Regulation of the magnetic behavior by adjusting oxygen stoichiometry in ZrOx film[J]. Chinese Optics Letters, 2016, 14(11): 113101.

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