Study on the interaction between a dislocation and impurities Part XVI Relation between effective shear stress and temperature in KCl single crystals doped with divalent impurities

転位と不純物との相互作用に関する研究 (16) :　2 価不純物を含んだKCl 単結晶の有効応力と温度との関係

Study on the interaction between a dislocation and impurities Part XVI Relation between effective shear stress and temperature in KCl single crystals doped with divalent impurities

Creators Kohzuki Yohichi

The interaction between a dislocation and the impurity in KCl:Sr2+ (0.035, 0.050, 0.065 mol% in the melt) single crystals can be approximated to the Fleischer’s model taking account of the Friedel relation. This is because the bending angle, φ0 , at which the dislocation embraces the impurities is within the range of 149° to 161° for the specimens under the effective stress at the temperature of 0 K. Then, the critical temperature, c T , at which the effective stress is zero was determined to be 289 K from the linear plots of (τp1/ τp0)1/ 3 and (temperature)1/2 for the specimens. τp0 is the effective shear stress τp1 due to impurities without thermal activation.

[ISSN]0387-9232

[NCID]AN00031668