Abstract
This paper presents the results of measurements of the mechanical and electrical properties of as-received pure and lead-doped crystals of potassium chloride. The critical resolved shear stress of the crystals obeys the Franks relationship\(\tau _A^* \propto \surd c_{Pb^{2 + } } \) in the whole concentration range. In addition, the correlation betweenτ 0 and the Vickers hardness numberH was found and the equation is of the formτ 0=k (H−H 0). The solubility of Pb2+ in as-received KCl crystals was observed, from measurements of the electrical conductivity, to be low—the successive saturation of the solid solution started already in an environment of 5 mole ppm in agreement with data from the mechanical measurements. The density of cation vacancies and their mobility were represented by the following euqationsμ 1 T=6·25×104 exp(−·75/kT) cm2 K/volt. sec,n 1=6·95×1023 exp(−2·12/kT) vacancies/cm3 The value of 0sd46±0·02 eV was found as a rough estimate of the association energy.
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The authors wish to express their thanks to Professor Dr. J. Z.Damm and Ing. E.Mariani for their stimulating interest in the present work.
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Suszyńska, M., Hartmanová, M., Řežábková, H. et al. Some physical properties of KCl+Pb2+ crystals. Czech J Phys 26, 1011–1019 (1976). https://doi.org/10.1007/BF01587448
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DOI: https://doi.org/10.1007/BF01587448