METHOD OF DETERMINING DIRECTION OF POLAR AXIS IN MONOCRYSTALS Russian patent published in 1994 - IPC

FIELD: semiconductor engineering; crystallography. SUBSTANCE: electric field is applied to β-diphosphide cadmium monocrystal by means of needle electrode through needle-crystal charge space, which is placed into dielectric liquid. Needle electrode is brought from basic planes of chipping and positive polarity single electric pulse sequence is applied to it when electrode is shifted along the crystal. If amplitudes of voltage pulses are sufficient, the breakdown channels originate at single-time effects already, which are sufficient for microscopic testing of sizes. Direction of polar axis is judged from the lengths of break-down channels in sample. EFFECT: improved reliability; improved precision. 1 dwg, 1 tbl