• Indentation studies on alkaline earth fluoride crystals at elevated temperatures

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    • Keywords


      Hardness; indentation; slip; fluorite type crystals

    • Abstract


      Indentations have been made on the (111) planes of CaF2, SrF2 and BaF2 at various temperatures up to 700°C. By etching the crystals, the indentation dislocation rosettes (IDRs) have been recorded and the relative hardness is estimated from the dimensions of the IDRs. The hardness of all these crystals falls with temperature according to the equationH=A exp(−BT). Dramatic changes are observed in the shape of the IDR at elevated temperatures indicating activation of new slip systems.

    • Author Affiliations


      K Kishan Rao1 D B Sirdeshmukh1

      1. Department of Physics, Kakatiya University, Warangal - 506 009, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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