Letters to the Editor

Journal of Superhard Materials

, Volume 30, Issue 6, pp 428-429

First online:

On the hardness of a new boron phase, orthorhombic γ-B28

  • V. L. SolozhenkoAffiliated withLPMTM-CNRS, Université Paris Nord
  • , O. O. KurakevychAffiliated withLPMTM-CNRS, Université Paris Nord
  • , A. R. OganovAffiliated withDepartment of Materials, ETH Zürich

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Measurements of the hardness of a new high-pressure boron phase, orthorhombic γ-B28, are reported. According to the data obtained, γ-B28 has the highest hardness (∼ 50 GPa) of all known crystal-line modifications of boron.

Key words

orthorhombic boron hardness