Abstract

The influence of oxygen, carbon and boron segregation at grain boundaries and twin boundaries on the electrical activity of these defects has been investigated and demonstrated using SIMS, EBIC and LBIC measurements. It appears that invariably carbon and boron segregation induces strong electrical activity on extended defects, while simultaneous oxygen and carbon segregation or the sole oxygen segregation induces a variety of electrical effects, like bright contrast or double maxima figures. A preliminary discussion of these results is given.

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