Abstract
Zwicky proposed a method for calculating the theoretical strength of ionic crystals using the Madelung potential for alternating series. By this method he calculated the theoretical tensile strength of the sodium chloride crystal along the edge of the unit cube. This is a special case since the transverse compression deformation along the y- and z-axes is the same owing to the identical symmetry of the lattice in these directions. In the present paper the Zwicky method has been extended to other directions in tension, where the contractions in the mutually perpendicular directions are different. The theorretical tensile strength and Young's modulus along the body and face diagonals of the unit cell have been calculated for the sodium chloride crystal.
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Bartenev, G.M., Koryak-Doronenko, E.G. Theoretical tensile strength of sodium chloride crystal along body and face diagonals. Soviet Physics Journal 11, 57–60 (1968). https://doi.org/10.1007/BF00823033
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DOI: https://doi.org/10.1007/BF00823033