Electronic structure of titania aerogels from soft x-ray absorption spectroscopy

被引：175

作者：

Kucheyev, SO ^{[1
]}

van Buuren, T ^{[1
]}

Baumann, TF ^{[1
]}

Satcher, JH ^{[1
]}

Willey, TM ^{[1
]}

Meulenberg, RW ^{[1
]}

Felter, TE ^{[1
]}

Poco, JF ^{[1
]}

Gammon, SA ^{[1
]}

Terminello, LJ ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.69.245102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic structure of TiO2 aerogels is studied by soft x-ray absorption near-edge structure (XANES) spectroscopy. High-resolution O K-edge and Ti L-2,L-3-edge XANES spectra of aerogels are compared with those of rutile, anatase, and unrelaxed amorphous phases of full-density TiO2. Results show that all the main spectroscopic features of aerogels, reflecting the element-specific partial density of empty electronic states and correlation effects, can be attributed to the absence of long-range order in stoichiometric amorphous TiO2. Based on these results, we discuss the effects of short- and long-range order on the electronic structure of TiO2.

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页码：245102 / 1

页数：7

相关论文

共 36 条

[11] Vacant states of TiO2 with rutile structure and their reflection in different-type x-ray absorption spectra [J].

Finkelstein, LD ;

Zabolotzky, EI ;

Korotin, MA ;

Shamin, SN ;

Butorin, SM ;

Kurmaev, EZ ;

Nordgren, J .

X-RAY SPECTROMETRY, 2002, 31 (06) :414-418

[12] X-RAY BAND SPECTRA AND MOLECULAR-ORBITAL STRUCTURE OF RUTILE TIO2 [J].

FISCHER, DW .

PHYSICAL REVIEW B, 1972, 5 (11) :4219-&

[13]

Glaser R., 2002, HDB POROUS SOLIDS, P395

[14] STRUCTURAL AND ELECTRONIC-PROPERTIES OF TITANIUM-DIOXIDE [J].

GLASSFORD, KM ;

CHELIKOWSKY, JR .

PHYSICAL REVIEW B, 1992, 46 (03) :1284-1298

[15] STUDY OF THE K EDGES OF 3D TRANSITION-METALS IN PURE AND OXIDE FORM BY X-RAY-ABSORPTION SPECTROSCOPY [J].

GRUNES, LA .

PHYSICAL REVIEW B, 1983, 27 (04) :2111-2131

[16] OXYGEN-K NEAR-EDGE FINE-STRUCTURE - AN ELECTRON-ENERGY-LOSS INVESTIGATION WITH COMPARISONS TO NEW THEORY FOR SELECTED 3D TRANSITION-METAL OXIDES [J].

GRUNES, LA ;

LEAPMAN, RD ;

WILKER, CN ;

HOFFMANN, R ;

KUNZ, AB .

PHYSICAL REVIEW B, 1982, 25 (12) :7157-7173

[17] Structure of titania sol-gel films: A study by X-ray absorption spectroscopy [J].

Hanley, TL ;

Luca, V ;

Pickering, I ;

Howe, RF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (06) :1153-1160

[18] Ion beam radiation damage effects in rutile (TiO2) [J].

Hartmann, T ;

Wang, LM ;

Weber, WJ ;

Yu, N ;

Sickafus, KE ;

Mitchell, JN ;

Wetteland, CJ ;

Nastasi, MA ;

Hollander, MG ;

Baker, NP ;

Evans, CR ;

Tesmer, JR ;

Maggiore, CJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 141 (1-4) :398-403

[19] FIRST EXPERIMENTAL RESULTS FROM IBM/TENN/TULANE/LLNL/LBL UNDULATOR BEAMLINE AT THE ADVANCED LIGHT-SOURCE [J].

JIA, JJ ;

CALLCOTT, TA ;

YURKAS, J ;

ELLIS, AW ;

HIMPSEL, FJ ;

SAMANT, MG ;

STOHR, J ;

EDERER, DL ;

CARLISLE, JA ;

HUDSON, EA ;

TERMINELLO, LJ ;

SHUH, DK ;

PERERA, RCC .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (02) :1394-1397

[20] Lattice location and electrical conductivity in Sb-implanted rutile [J].

Khubeis, I ;

Fromknecht, R ;

Meyer, O .

PHYSICAL REVIEW B, 1997, 55 (01) :136-141

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