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000006185 084__ $$2WoS$$aNanoscience & Nanotechnology
000006185 084__ $$2WoS$$aMaterials Science, Multidisciplinary
000006185 084__ $$2WoS$$aPhysics, Applied
000006185 1001_ $$0P:(DE-HGF)0$$aStrachan, J.P.$$b0
000006185 245__ $$aStructural and chemical characterization of TiO2 memristive devices by spatially-resolved NEXAFS
000006185 260__ $$aBristol$$bIOP Publ.$$c2009
000006185 300__ $$a485701
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000006185 440_0 $$04475$$aNanotechnology$$v20$$x0957-4484
000006185 500__ $$aWe thank J Borghetti, X Li, P Long, D A A Ohlberg, M D Pickett, Q Xia and W Wu for experimental assistance and P J Kuekes, D B Strukov and W M Tong for helpful discussions. The ALS is funded by the US Department of Energy's Office of Basic Energy Sciences and work at HP is sponsored by the US Government's Nano-Enabled Technology Initiative.
000006185 520__ $$aWe used spatially-resolved NEXAFS (near-edge x-ray absorption fine structure) spectroscopy coupled with microscopy to characterize the electronic, structural and chemical properties of bipolar resistive switching devices. Metal/TiO2/metal devices were electroformed with both bias polarities and then physically opened to study the resulting material changes within the device. Soft x-ray absorption techniques allowed isolated study of the different materials present in the device with 100 nm spatial resolution. The resulting morphology and structural changes reveal a picture of localized polarity-independent heating occurring within these devices initiated by and subsequently accelerating polarity-dependent electrochemical reduction/oxidation processes.
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000006185 7001_ $$0P:(DE-HGF)0$$aYang, J.J.$$b1
000006185 7001_ $$0P:(DE-Juel1)VDB64025$$aMünstermann, R.$$b2$$uFZJ
000006185 7001_ $$0P:(DE-HGF)0$$aScholl, A.$$b3
000006185 7001_ $$0P:(DE-HGF)0$$aMedeiros-Ribeiro, G.$$b4
000006185 7001_ $$0P:(DE-HGF)0$$aStewart, D.R.$$b5
000006185 7001_ $$0P:(DE-HGF)0$$aWilliams, R.S.$$b6
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