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doi:10.1002/sia.v40:3/4

Cited by 7 publications

(7 citation statements)

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“…[20][21][22][23][24] Photoemission in absorption region enables one to extract the partial density of states (PDOS) in the valence band. In the present work, we have performed x-ray photoemission spectroscopy (XPS) and RPES experiments on undoped and Fe doped (2, 6 at %) CeO 2 thin films grown by PLD on Si (100) in order to obtain a fundamental understanding of the electronic structures and modification of valence band, with respect to Fe doping.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure studies of Fe doped CeO2 thin films by resonance photoemission spectroscopy

Khare¹,

Choudhary²,

Phase³

et al. 2011

Journal of Applied Physics

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We have studied the modification in the electronic properties of pulsed laser deposited CeO2 thin films due to Fe doping (2 and 6 at %), with the help of x-ray photoemission spectroscopy (XPS) and resonance photoemission spectroscopy (RPES) measurements. XPS results indicate the ionic state of Fe in the Fe doped films, ruling out the possibility of Fe metallic clusters. Valence band spectra of CeO2 show an additional feature after Fe doping, suggesting its incorporation in the CeO2 matrix. RPES studies on these films reveal the hybridization between oxygen vacancy induced Ce localized states and Fe derived states.

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Section: Introductionmentioning

confidence: 99%

Electronic structure studies of Fe doped CeO2 thin films by resonance photoemission spectroscopy

Khare¹,

Choudhary²,

Phase³

et al. 2011

Journal of Applied Physics

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“…10,11 A shift, in the order of $1 eV, of Cu 2p to higher binding energies has been observed earlier when Cu is dissolved in solid solution with Al. 12,13 We therefore conclude that Cu in Fig. 9a also corresponds to the metallic state.…”

Section: Resultsmentioning

confidence: 57%

Effect of Copper on Anodic Activity of Aluminum-Lead Model Alloy in Chloride Solution

Anawati¹,

Diplas²,

Nisancioḡl̄ū³

2011

J. Electrochem. Soc.

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This paper investigates the effect of alloying element Cu on the anodic activation of aluminum by trace element Pb in chloride so-lution based on a comparison of the surface and electrochemical properties of a model AlPb alloy, containing 20 wt-ppm Pb, and an AlPbCu alloy, containing 0.5 wt % Cu and 20 ppm Pb. Anodic activation of AlPb occurs by the formation of a nanosized metal-lic Pb-rich film at the thermal oxide- aluminum substrate interface as a result of heat treatment at 600C. Activation by Pb was reduced in the presence of Cu, although the Pb film was still formed by heat treatment independent of the presence of Cu in solid solution. While the anodic polarization behavior and corrosion mechanism were similar for the binary and ternary alloys, the cor-rosion rate at identical applied anodic potentials was significantly reduced by the presence of copper in the alloy. Copper became enriched at the surface as a result of selective corrosion of the more active aluminum component. Thus, the increased passivity of the surface by the presence of Cu was attributed to the ennobling effect of Cu countering the activating effect of Pb. VC 2011 The Electrochemical Society. [DOI: 10.1149/1.3562946] All rights reserved. Manuscript submitted December 3, 2010; revised manuscript received February 15, 2011. Published March 28, 2011. High temperature heat treatment on aluminum alloys containing Pb as a trace element is known to cause segregation of a few nano-meters thick Pb-rich film at the oxide metal interface.1–6 The film destabilizes the thermally-formed aluminum oxide when the allo

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“…Cu 2p values higher than that for pure Cu have been observed for Cu in solid solution with Al. 10,11 The XPS data are plotted as quantitative depth profiles in Fig. 11.…”

Section: Resultsmentioning

confidence: 99%