Pressure-induced valence change in YbAl3 [electronic resource] : a combined high pressure inelastic x-ray scattering and theoretical investigation
- Washington, D.C. : United States. Dept. of Energy, 2008. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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- Free-to-read Unrestricted online access
- High resolution x-ray absorption (XAS) experiments in the partial fluorescence yield mode (PFY) and resonant inelastic x-ray emission (RXES) measurements under pressure were performed on the intermediate valence compound YbAl₃ up to 38 GPa. The results of the Yb L₃ PFY-XAS and RXES studies show a smooth valence increase in YbAl₃ from 2.75 to 2.93 at ambient to 38 GPa. In-situ angle dispersive synchrotron high pressure x-ray diffraction experiments carried out using a diamond cell at room temperature to study the equation of state showed the ambient cubic phase stable up to 40 GPa. The results obtained from self-interaction corrected local spin density functional calculations to understand the pressure effect on the Yb valence and compressibility are in good agreement with the experimental results.
- Published through SciTech Connect., 01/01/2008., "la-ur-08-05220", " la-ur-08-5220", Phys. Rev. B ISSN 1098-0121 FT, and Bauer, E D; Nicol, M F; Hu, M; Kumar, R S; Cornelius, A L; Svane, A; Vaitheeswaran, G; Kanchana, V.
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