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High-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt

TitleHigh-resolution x-ray diffraction study of the heavy-fermion compound YbBiPt
Publication TypeJournal Article
Year of Publication2015
AuthorsUeland, BG, Saunders, SM, Bud'ko, SL, Schmiedeshoff, GM, Canfield, PC, Kreyssig, A, Goldman, AI
JournalPhysical Review B
Date Published11
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000365773100003
Keywordscubic crystal fields, low-energy excitations, magnetism, state, symmetry-breaking, systems, thermal-expansion, ybipt

s thermal expansion has a minimum at approximate to 18K and a region of negative thermal expansion for 9 less than or similar to T less than or similar to 18 K. Despite diffraction patterns taken at 1.6K which indicate that the lattice is face-centered cubic and that the Yb resides on a crystallographic site with cubic point symmetry, we demonstrate that the linear thermal expansion may be modeled using crystalline-electric-field level schemes appropriate for Yb3+ residing on a site with either cubic or less than cubic point symmetry.

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