Effects of Dislocations on Growth Habit in Crystal of Thallium Acid Phthalate

摘要

The spiral and ordina.ry dislocritions both running nearly perpendicular to the(001)growth surface of thallium acid phdiaJate,were revealed and identified by x-ray topography.They pinyunexpectedly important,role on that face by providing the self-perpetuating step sources so ns to acceJerafe its growth rate or even to change its crystal morphology.