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Possible Superhardness of CrB4

Knappschneider, Arno and Litterscheid, Christian and Dzivenko, Dmytro and Kurzman, Joshua A. and Seshadri, Ram and Wagner, Norbert and Beck, Johannes and Riedel, Ralf and Albert, Barbara (2013):
Possible Superhardness of CrB4.
In: Inorganic Chemistry, ACS Publications, pp. 540-542, 52, (2), ISSN 0020-1669, [Online-Edition: http://dx.doi.org/10.1021/ic3020404],
[Article]

Abstract

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.

Item Type: Article
Erschienen: 2013
Creators: Knappschneider, Arno and Litterscheid, Christian and Dzivenko, Dmytro and Kurzman, Joshua A. and Seshadri, Ram and Wagner, Norbert and Beck, Johannes and Riedel, Ralf and Albert, Barbara
Title: Possible Superhardness of CrB4
Language: English
Abstract:

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.

Journal or Publication Title: Inorganic Chemistry
Volume: 52
Number: 2
Publisher: ACS Publications
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
07 Department of Chemistry > Fachgebiet Anorganische Chemie
07 Department of Chemistry > Physical Chemistry
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
07 Department of Chemistry
Date Deposited: 13 Jan 2014 12:55
Official URL: http://dx.doi.org/10.1021/ic3020404
Identification Number: doi:10.1021/ic3020404
Funders: This work made use of the shared experimental facilities of the Materials Research Laboratory supported by the National Science Foundation through the MRSEC Program (NSF DMR-1121053). , J.A.K. thanks the ConvEne-IGERT Program (NSF-DGE 0801627) for an Associateship, B.A. gratefully acknowledges financial support from the Alexander von Humboldt Foundation and the German Academic Exchange Service.
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