Local electronic structure in a LiAl O2 single crystal studied with Li7 NMR spectroscopy and comparison with quantum chemical calculations

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Autoren

Externe Organisationen

  • Stony Brook University (SBU)
  • Leibniz-Institut für Kristallzüchtung (IKZ)
  • Rheinische Friedrich-Wilhelms-Universität Bonn
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Details

OriginalspracheEnglisch
Aufsatznummer245120
FachzeitschriftPhysical Review B - Condensed Matter and Materials Physics
Jahrgang74
Ausgabenummer24
PublikationsstatusVeröffentlicht - 2006

Abstract

The local electronic structure of a γ-LiAl O2 single crystal was investigated with Li7 nuclear magnetic resonance measurements. We observed different sets of spectra which originate from the four crystallographically equivalent but magnetically inequivalent Li sites per unit cell. We find a coupling constant e2 qQ h=115.1±0.6 kHz and an asymmetry parameter η=0.69±0.01. The directions of the principal axes of the electric field gradient tensor at the sites of the Li nuclei have also been determined. We compared these experimental results with quantum chemical calculations at density-functional level and found good agreement.

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Local electronic structure in a LiAl O2 single crystal studied with Li7 NMR spectroscopy and comparison with quantum chemical calculations. / Indris, Sylvio; Heitjans, Paul; Uecker, Reinhard et al.
in: Physical Review B - Condensed Matter and Materials Physics, Jahrgang 74, Nr. 24, 245120, 2006.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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author = "Sylvio Indris and Paul Heitjans and Reinhard Uecker and Thomas Bredow",
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AU - Indris, Sylvio

AU - Heitjans, Paul

AU - Uecker, Reinhard

AU - Bredow, Thomas

PY - 2006

Y1 - 2006

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AB - The local electronic structure of a γ-LiAl O2 single crystal was investigated with Li7 nuclear magnetic resonance measurements. We observed different sets of spectra which originate from the four crystallographically equivalent but magnetically inequivalent Li sites per unit cell. We find a coupling constant e2 qQ h=115.1±0.6 kHz and an asymmetry parameter η=0.69±0.01. The directions of the principal axes of the electric field gradient tensor at the sites of the Li nuclei have also been determined. We compared these experimental results with quantum chemical calculations at density-functional level and found good agreement.

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JO - Physical Review B - Condensed Matter and Materials Physics

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