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

  title={On the hardness of a new boron phase, orthorhombic $\gamma$-B28},
  author={Vladimir L. Solozhenko and Oleksandr O. Kurakevych and Artem R. Oganov},
  journal={Journal of Superhard Materials},
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. 
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