Climb‐Dissociated Dislocations in Monazite at Low Temperature

Three types of climb‐dissociated partial dislocations were observed by high‐resolution transmission electron microscopy in monazite (LaPO 4 ) that was indented at room temperature. Two types were found on twin boundaries, and a third in the lattice. Formation mechanisms are discussed. Glide of climb‐dissociated partial dislocations that is allowed by stacking fault migration is considered.