F spots and domain patterns in rhombohedral PbZr[sub 0.90]Ti[sub 0.10]O[sub 3]

Haitao Huang; Li Min Zhou, G.; Jun Guo; Huey Hoon Hng, G.; Joo Tien Oh; Peter Hing, G.
November 2003
Applied Physics Letters;11/3/2003, Vol. 83 Issue 18, p3692
Academic Journal
The microstructure of PbZr[sub 0.9]Ti[sub 0.1]O[sub 3] ceramics is studied by transmission electron microscopy. Two types of domain patterns are found, namely, the 109° domain with the F spots (1/2{hkl} superlattice reflections) observed in neighboring domains and the 71° domain with the F spots observed in one domain and having disappeared in the neighboring one. The computer simulation indicates that the F spots are forbidden at h=k positions so that they do not appear in the electron diffraction pattern if viewed along the [110] direction. Based on this result, the observed two types of domain patterns and their corresponding diffraction patterns can be explained. © 2003 American Institute of Physics.


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