Bykova, Elena, Johansson, Erik, Bykov, Maxim ORCID: 0000-0003-0248-1728, Chariton, Stella, Fei, Hongzhan, Ovsyannikov, Sergey V., Aslandukova, Alena, Gabel, Stefan, Holz, Hendrik ORCID: 0000-0002-6525-359X, Merle, Benoit, Alling, Bjorn, Abrikosov, Igor A., Smith, Jesse S., Prakapenka, Vitali B., Katsura, Tomoo ORCID: 0000-0001-7857-5101, Dubrovinskaia, Natalia, Goncharov, Alexander F. and Dubrovinsky, Leonid . Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B-2 Dumbbells. Chem. Mat.. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5002

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Abstract

Transition metal borides are known due to their attractive mechanical, electronic, refractive, and other properties. A new class of rhenium borides was identified by synchrotron single-crystal X-ray diffraction experiments in laser-heated diamond anvil cells between 26 and 75 GPa. Recoverable to ambient conditions, compounds rhenium triboride (ReB3) and rhenium tetraboride (ReB4) consist of close-packed single layers of rhenium atoms alternating with boron networks built from puckered hexagonal layers, which link short bonded (similar to 1.7 angstrom) axially oriented B-2 dumbbells. The short and incompressible Re-B and B-B bonds oriented along the hexagonal c-axis contribute to low axial compressibility comparable with the linear compressibility of diamond. Sub-millimeter samples of ReB3 and ReB4 were synthesized in a large-volume press at pressures as low as 33 GPa and used for material characterization. Crystals of both compounds are metallic and hard (Vickers hardness, H-V = 34(3) GPa). Geometrical, crystal-chemical, and theoretical analysis considerations suggest that potential ReBx compounds with x > 4 can be based on the same principle of structural organization as in ReB3 and ReB4 and possess similar mechanical and electronic properties.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bykova, ElenaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johansson, ErikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bykov, MaximUNSPECIFIEDorcid.org/0000-0003-0248-1728UNSPECIFIED
Chariton, StellaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fei, HongzhanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ovsyannikov, Sergey V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aslandukova, AlenaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gabel, StefanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holz, HendrikUNSPECIFIEDorcid.org/0000-0002-6525-359XUNSPECIFIED
Merle, BenoitUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alling, BjornUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abrikosov, Igor A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Jesse S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prakapenka, Vitali B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Katsura, TomooUNSPECIFIEDorcid.org/0000-0001-7857-5101UNSPECIFIED
Dubrovinskaia, NataliaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goncharov, Alexander F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dubrovinsky, LeonidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-690258
DOI: 10.1021/acs.chemmater.2c00520
Journal or Publication Title: Chem. Mat.
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 1520-5002
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ELECTRONIC-PROPERTIES; TUNGSTEN TETRABORIDE; CRYSTAL STRUCTURE; ELASTIC-MODULUS; GROUND-STATE; HARDNESS; DIBORIDE; COMPRESSIBILITY; INDENTATION; SYSTEMMultiple languages
Chemistry, Physical; Materials Science, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69025

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