Interatomic bonding in oxygen-stabilized Ti2 Ni-type compounds

M. Polak; M. Hefetz; M. H. Mintz; M. P. Dariel

doi:10.1016/0368-2048(83)85071-3

Interatomic bonding in oxygen-stabilized Ti₂ Ni-type compounds

M. Polak, M. Hefetz, M. H. Mintz, M. P. Dariel

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Abstract

X-ray photoelectron-spectroscopic studies of oxygen-stabilized Ti₂ Ni-type compounds Ti₄M₂O_x (M = Fe, Co and Ni; x = 0.5, 1) have revealed some charge transfer from the titanium to the oxygen atoms with no direct involvement of the second metallic constituent M. Limited partial ionicity is deduced from the measured core-electron binding energies, which are intermediate between the respective values for TiO₂ and for the pure elements (Ti⁰, O₂). In particular, approximate estimations of the partial charge residing on Ti are consistent with the charges derived for the oxygen atoms, and the results correlate with the TiO distance in Ti₄M₂O, as compared with corresponding data for other systems. The implications of the interatomic bonding for the hydrogen absorption properties of the oxygen-stabilized compounds are discussed.

Original language	English
Pages (from-to)	199-206
Number of pages	8
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	31
Issue number	3
DOIs	https://doi.org/10.1016/0368-2048(83)85071-3
State	Published - 1 Jan 1983

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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10.1016/0368-2048(83)85071-3

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title = "Interatomic bonding in oxygen-stabilized Ti2 Ni-type compounds",

abstract = "X-ray photoelectron-spectroscopic studies of oxygen-stabilized Ti2 Ni-type compounds Ti4M2Ox (M = Fe, Co and Ni; x = 0.5, 1) have revealed some charge transfer from the titanium to the oxygen atoms with no direct involvement of the second metallic constituent M. Limited partial ionicity is deduced from the measured core-electron binding energies, which are intermediate between the respective values for TiO2 and for the pure elements (Ti0, O2). In particular, approximate estimations of the partial charge residing on Ti are consistent with the charges derived for the oxygen atoms, and the results correlate with the TiO distance in Ti4M2O, as compared with corresponding data for other systems. The implications of the interatomic bonding for the hydrogen absorption properties of the oxygen-stabilized compounds are discussed.",

author = "M. Polak and M. Hefetz and Mintz, {M. H.} and Dariel, {M. P.}",

year = "1983",

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TY - JOUR

T1 - Interatomic bonding in oxygen-stabilized Ti2 Ni-type compounds

AU - Polak, M.

AU - Hefetz, M.

AU - Mintz, M. H.

AU - Dariel, M. P.

PY - 1983/1/1

Y1 - 1983/1/1

N2 - X-ray photoelectron-spectroscopic studies of oxygen-stabilized Ti2 Ni-type compounds Ti4M2Ox (M = Fe, Co and Ni; x = 0.5, 1) have revealed some charge transfer from the titanium to the oxygen atoms with no direct involvement of the second metallic constituent M. Limited partial ionicity is deduced from the measured core-electron binding energies, which are intermediate between the respective values for TiO2 and for the pure elements (Ti0, O2). In particular, approximate estimations of the partial charge residing on Ti are consistent with the charges derived for the oxygen atoms, and the results correlate with the TiO distance in Ti4M2O, as compared with corresponding data for other systems. The implications of the interatomic bonding for the hydrogen absorption properties of the oxygen-stabilized compounds are discussed.

AB - X-ray photoelectron-spectroscopic studies of oxygen-stabilized Ti2 Ni-type compounds Ti4M2Ox (M = Fe, Co and Ni; x = 0.5, 1) have revealed some charge transfer from the titanium to the oxygen atoms with no direct involvement of the second metallic constituent M. Limited partial ionicity is deduced from the measured core-electron binding energies, which are intermediate between the respective values for TiO2 and for the pure elements (Ti0, O2). In particular, approximate estimations of the partial charge residing on Ti are consistent with the charges derived for the oxygen atoms, and the results correlate with the TiO distance in Ti4M2O, as compared with corresponding data for other systems. The implications of the interatomic bonding for the hydrogen absorption properties of the oxygen-stabilized compounds are discussed.

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Interatomic bonding in oxygen-stabilized Ti₂ Ni-type compounds

Abstract

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