Crystal structure and physical properties of UMo3B7

Salamakha, Leonid; Sologub, Oksana; Rizzoli, Corrado; Michor, Herwig; Gonҫalves, Antonio P.; Rogl, Peter; Bauer, Ernst

doi:10.1016/j.intermet.2017.02.009

Record link:

https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-3251
http://hdl.handle.net/20.500.12708/873

Title:

Crystal structure and physical properties of UMo3B7

Citation:

Salamakha, L., Sologub, O., Rizzoli, C., Michor, H., Gonҫalves, A. P., Rogl, P., & Bauer, E. (2017). Crystal structure and physical properties of UMo3B7. Intermetallics. https://doi.org/10.1016/j.intermet.2017.02.009

Publisher DOI:

10.1016/j.intermet.2017.02.009

CatalogPlus:

AC11364801

Publication Type:

Article - Original Research Article

Language:

English

Authors:

Salamakha, Leonid
Sologub, Oksana
Rizzoli, Corrado
Michor, Herwig
Gonҫalves, Antonio P.
Rogl, Peter
Bauer, Ernst

Organisational Unit:

E138 - Institut für Festkörperphysik

Journal:

Intermetallics

ISSN:

0966-9795

Date (published):

2017

Publisher:

Elsevier Ltd.

Peer reviewed:

Yes

Keywords:

uranium molybdenum boride; crystal chemistry; electrical resistivity; magnetic susceptibility; specific heat; X-ray diffraction

Abstract:

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.

Additional information:

The final publication is available via <a href="https://doi.org/10.1016/j.intermet.2017.02.009" target="_blank">https://doi.org/10.1016/j.intermet.2017.02.009</a>.

License:

In Copyright

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