Transmission Electron Microscopy Study of 3.2 YSZ Single Crystals Manufactured by the Skull Melting Method

摘要

Transmission electron microscopy (TEM) analyses were performed to examine the spontaneously ordered structure in single crystals of 3.2 mole% of Y_2O_3 added ZrO_2 (3.2 YSZ) manufactured by the Skull melting method. The selected area electron diffraction patterns showed several superstructure reflections with symmetrical intensity at (100), (010), and (110) positions, indicating that Y_(0.5)Zr_(0.5)O_(2-x) with L1_0-like cation-ordered structure was formed in 3.2 YSZ. High-resolution TEM has been used to reveal the presence of the partially ordered structure, which was characterized by a doublet periodicity in the contrast of the {100} lattice planes.