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Pressure-induced va...
Pressure-induced valence change in YbAl3 : A combined high-pressure inelastic x-ray scattering and theoretical investigation
- Article/chapterEnglish2008
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LIBRIS-ID:oai:DiVA.org:kth-36307
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36307URI
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https://doi.org/10.1103/PhysRevB.78.075117DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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QC 20110711
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High-resolution x-ray-absorption (XAS) experiments in the partial fluorescence yield mode (PFY) and resonant inelastic x-ray emission (RXES) measurements were performed on the intermediate-valence compound YbAl3 under pressure of up to 38 GPa. The results of the YbAl3 PFY-XAS and RXES studies show that the valence of Yb increases smoothly from 2.75 at ambient pressure to 2.93 at 38 GPa. In situ angle-dispersive synchrotron high-pressure x-ray-diffraction experiments carried out using a diamond cell at room temperature show that the ambient pressure cubic phase is 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.
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Svane, Axel
(author)
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Vaitheeswaran, GanapathyKTH,Tillämpad materialfysik(Swepub:kth)u17pa60w
(author)
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Kanchana, VenkatakrishnanKTH,Tillämpad materialfysik(Swepub:kth)u1232rlz
(author)
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Bauer, Eric D.
(author)
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Hu, Michael
(author)
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Nicol, Malcolm F.
(author)
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Cornelius, Andrew L.
(author)
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KTHTillämpad materialfysik
(creator_code:org_t)
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In:Physical Review B. Condensed Matter and Materials Physics78:7, s. 075117-1098-01211550-235X
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