Possible Superhardness of CrB4

Chromium tetraboride [orthorhombic, space group Pnnm (No. 58), a = 474.65(9) pm, b = 548.0(1) pm, c = 286.81(5) pm, and R value (all data) = 0.041], formerly described in space group Immm, was found not to be superhard, despite several theory-based prognoses. CrB4 shows an almost temperature-indepen...

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Bibliographic Details
Published in:Inorganic chemistry 2013-01, Vol.52 (2), p.540-542
Main Authors: Knappschneider, Arno, Litterscheid, Christian, Dzivenko, Dmytro, Kurzman, Joshua A, Seshadri, Ram, Wagner, Norbert, Beck, Johannes, Riedel, Ralf, Albert, Barbara
Format: Article
Language:English
Online Access:Get full text
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Summary:Chromium tetraboride [orthorhombic, space group Pnnm (No. 58), a = 474.65(9) pm, b = 548.0(1) pm, c = 286.81(5) pm, and R value (all data) = 0.041], formerly described in space group Immm, was found not to be superhard, despite several theory-based prognoses. CrB4 shows an almost temperature-independent paramagnetism, consistent with low-spin CrI in a metallic compound. Conductivity measurements confirm the metallic character.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic3020404