Shear Modulus of Polycrystalline Rhenium Diboride Determined from Surface Brillouin Spectroscopy

[摘要]：Surface Brillouin specotroscopy of a densified powder compact of rhenium diboride (see scanning electron microscopy image) results in a determined shear modulus of 223 GPa. This value is comparable to the shear modulus of c-BC2N and provides evidence for the superhard nature of ReB2.

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