Vickers hardness measurements have been made on polycrystalline blanks of CsCl𝑥Br(1–x) and single crystals of NH4Cl𝑥Br(1–x). The composition dependence of hardness is highly nonlinear in both systems and follows an empirical model that includes a lattice contribution and a disorder contribution. The Gilman–Chin parameter (𝐻/𝐶44) has been calculated and its significance discussed.
Volume 43, 2020
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