Abstract
The mechanical properties of crystals are evaluated by mechanical testing which reveals certain surface characteristics. The fastest and simplest type of mechanical testing is hardness measurement. The Vickers and Knoop microhardness studies have been carried out on 4‐methoxy benzaldehyde N‐methyl 4‐stilbazolium tosylate crystals grown by slow evaporation technique over a load range of 10–100 g. The Vickers hardness number (Hv) and the Knoop microhardness number (Hk) were found to increase with the increase in load. The Meyer’s index number ’n’ was calculated from Hv. The Young’s modulus was calculated using the Knoop hardness values. Hardness anisotropy has been observed in accordance with the orientation of the crystal. Laser damage threshold studies have been carried out for the crystal using a Q‐switched Nd:YAG laser of ns pulses. The surface of the grown crystal was analyzed with etching. The results are discussed in detail.
Published Version
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