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Title
Crystal structure and physical properties of UMo3B7
AuthorSalamakha, Leonid ; Sologub, Oksana ; Rizzoli, Corrado ; Michor, Herwig ; Gonalves, Antonio P. ; Rogl, Peter ; Bauer, Ernst In der Gemeinsamen Normdatei der DNB nachschlagen
Published in
Intermetallics, 2017, Vol. 85, Issue June, page 180-186
PublishedElsevier, 2017
Edition
Submitted version
LanguageEnglish
Document typeJournal Article
Keywords (EN)uranium molybdenum boride / crystal chemistry / electrical resistivity / magnetic susceptibility / specific heat / X-ray diffraction
Project-/ReportnumberAustrian Science Fund (FWF): V279-N19
ISSN0966-9795
URNurn:nbn:at:at-ubtuw:3-3251 Persistent Identifier (URN)
DOI10.1016/j.intermet.2017.02.009 
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 The work is publicly available
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Crystal structure and physical properties of UMo3B7 [0.85 mb]
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Abstract (English)

A novel ternary compound, UMo3B7, has been synthesized by arc melting and annealing at 900 C. Its crystal structure was determined from X-ray single crystal diffraction data (YMo3B7-type structure, space group Pnma; a=1.10310(8) nm, b=0.30995(2) nm, c=1.2792(1) nm, RF2=0.0205). The structure is composed of boron filled trigonal prisms as well as unfilled tetrahedra and tetragonal pyramids formed by metal atoms. With respect to boron atoms aggregation, it exhibits a well-developed two-dimensional boron network revealing infinite bands of edge linked boron hexagons. The relationship with the members of the structural series within the V-B system: VnBn+1= (n-1)VB (CrB-type) + VB2 (AlB2-type) (n=1, 2, 3, 5) is discussed. Specific heat, magnetic susceptibility and electrical resistivity measurements characterizes UMo3B7 as a spin fluctuating system.

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