The slip systems in KC1: Pb : A piezospectroscopic investigation of the Pb++ centre

Abstract

The stress-induced polarization of the luminescence of KC1: Pb is determined. It reveals the many possible slip systems in KC1. If the uniaxial stress is applied along 100 the frequently observed {10}100 systems are stressed. In general, at low stresses one or two of the four stressed systems are active (orthogonal slip), at high stresses all four stressed systems are active (oblique slip). If the uniaxial stress is applied along 111 it is highly probable that one of the three stressed {001}110 systems is active. A uniaxial stress along 110 can produce slip in many different ways. If the sample has a nearly quadratic cross section two or four {10}110 systems are active, if the sample is uncommonly shaped it is possible to force slip on one, two, three, or even four {001}110 systems.