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Nanohardness and Young’s modulus of oriented monocrystalline II-IV-V 2 chalcopyrite semiconductors are measured by nanoindentation for the first time. The tests are performed on (100) and (001) surfaces. Anisotropy is observed for Young’s modulus only. It is most pronounced for CdSiP 2 . The hardness results display linear dependence on the melting temperature (except for CdSiP 2 ) and the values decrease with the molar mass. They can be well fitted as a function of the molar mass and the unit cell volume. Young’s modulus dependences show similar trends.
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Exner et al. (2024) studied this question.
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