Observation of partially incoherent <110> boundaries between polar nanodomains in Na1/2Bi1/2TiO3 single crystals


The ferroelectric domain structure of Na1/2Bi1/2TiO3 single crystals was investigated by transmission electron microscopy (TEM) and piezoforce microscopy (PFM). Bright-field TEM and PFM images revealed the presence of polar nanodomains, whose boundaries had a tendency to align along the < 110 >. High resolution TEM images revealed planar defects along these < 110 > boundaries, which partially relaxed the coherency of the lattice. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488879]

Ferroelectricity, Transmission electron microscopy, Atomic force microscopy, Crystal structures, Planar defects
Yao, Jianjun, Ge, Wenwei, Yang, Yaodong, Luo, Liang, Li, Jiefang, Viehland, D., Bhattacharyya, Somnath, Zhang, Qinhui, Luo, Haosu (2010). Observation of partially incoherent < 110 > boundaries between polar nanodomains in Na1/2Bi1/2TiO3 single crystals. Journal of Applied Physics, 108(6). doi: 10.1063/1.3488879