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.
© 2016 Chinese Laser Press
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