Fabrication Of Ferrimagnetic Feox Thin Film And The Resistance Switching Of Au/Feox/Pt Heterostructure
JOURNAL OF APPLIED PHYSICS(2013)
Abstract
By controlling the temperature and oxygen partial pressure, well polycrystalline Fe3O4 thin film on Pt substrate was fabricated, using a stoichiometric alpha-Fe2O3 target. A ferrimagnetic hysteresis loop and a Verwey transition at about 130 K were shown in the results of magnetic measurement. A sharp hysteretic resistance switching below Verwey transition temperature (Tv) was observed in I-V tests of the Au/Fe3O4/Pt heterostructure. Enlarged hysteresis by larger pulse delay and suppressed meta-linsulator transition by larger source currents indicated that enhanced local Joule heating effect played an important role in the hysteresis of resistance switching. (C) 2013 American Institute of Physics.
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Key words
ferrimagnetic feo<sub>x</sub>,resistance switching,thin film
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