Low-angle grain boundaries in natural barite single crystals
A R Patel; J Koshy; A R Patel; Department of Physics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India; J Koshy; Department of Physics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
Журнал:
Journal of Physics D: Applied Physics
Дата:
1968-05-01
Аннотация:
Natural barite (BaSO<sub>4</sub>) crystals have been cleaved along (110) and (001) cleavages and etched in H<sub>2</sub>SO<sub>4</sub> and KOH. Rows of equally spaced pits are observed on both the cleavage faces. By etching matched cleavage faces correspondence has been established for intersecting grain boundaries. Correspondence has also been established on the two sides of a thin flake 1000 μm thick. For all the intersecting grain boundaries observed, the condition n<sub>a</sub>=n<sub>b</sub>+n<sub>c</sub> is satisfied, n<sub>a</sub>, n<sub>b</sub> and n<sub>c</sub> being the numbers of dislocations per micrometre in the three branches.
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