Convergent-beam electron diffraction of CaZr4O9, a complex zirconia alloy phase
Abstract The point-group and space-group symmetry of the controversial fluorite-based stoichiometric superlath phase of o 1 (CaZr 4 O 9 : Z=16), considered to be a coherently-intergrown subphase of lime-stabilized zirconia, is examined. Using convergent-beam and selected-area electron diffraction, it is determined that the space group of o 1 is C2/ c , in apparent agreement with earlier studies utilizing other diffraction techniques.