Chinese Optics Letters, 2016, 14 (11): 113101, Published Online: Aug. 2, 2018
Regulation of the magnetic behavior by adjusting oxygen stoichiometry in ZrOx film
310.4925 Other properties (stress, chemical,etc.) 050.1755 Computational electromagnetic methods 120.7000 Transmission
Abstract
The mechanism of ferromagnetic ordering in ZrO x 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 ZrO