One to One Correspondence between Etch Pits and Dislocations in KCl Crystals

Abstract

Etch pits of KCl crystals obtained with dehydrated glacial acetic acid were observed. KCl is so soft, comparing with LiF, that dislocations are generated on it by slight mechanical shocks. Therefore, surfaces of KCl crystal are apt to be contaminated in the sense of the dislocation theory. It is supposed its depth usually reaches 100 μ or more and also most of these generated dislocations are surface half loops and isolated loops. One to one correspondence between etch pits and dislocations is discussed.