期刊
APPLIED PHYSICS LETTERS
卷 94, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3073716
关键词
barium compounds; crystal structure; ferroelectric materials; piezoelectric materials; piezoelectricity; X-ray diffraction
We report here the finding of a new phase in BaTiO3 single crystals. High precision x-ray diffraction investigations of (001) field cooled crystals have shown the presence of a monoclinic M-C phase for temperatures below 300 K. This M-C phase is shown to be stable upon removal of the electric field. The results demonstrate the presence of structurally bridging low symmetry phases that lie between tetragonal and rhombohedral ones in this classic perovskite system: indicating a means to achieve high piezoelectricity in Pb-free systems via domain engineering.
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