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Structure, Electrical, and Optical Properties of ( Na 1/2 Bi 1/2 ) TiO 3 –1.5at.% Bi ( Zn 1/2 Ti 1/2 ) O 3 Lead‐free Single Crystal Grown by a TSSG Technique
Author(s) -
Chen Chao,
Zhang Haiwu,
Zhao Xiangyong,
Deng Hao,
Li Long,
Ren Bo,
Lin Di,
Li Xiaobing,
Luo Haosu,
Chen Zhen,
Su Jun
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12847
Subject(s) - raman spectroscopy , tetragonal crystal system , materials science , analytical chemistry (journal) , single crystal , crystallography , chemistry , crystal structure , physics , optics , chromatography
Lead‐free single crystal ( Na 1/2 Bi 1/2 ) TiO 3 –1.5 at.% Bi ( Zn 1/2 Ti 1/2 ) O 3 ( NBT –1.5 BZT ) with dimension of Φ35 mm × 12 mm was successfully grown by a top‐seeded solution growth technique. The average and local structure were studied by a combination of X‐ray diffraction and Raman spectroscopy. The electric and optical properties of <001>‐oriented single crystals were investigated systematically. Compared with pure NBT , the piezoelectric constant and transmission coefficient were both enhanced, that is, from 62 pC/N and ~60% to 121 pC/N and ~70%, respectively. Furthermore, domain structure observation suggested that the <110>‐oriented tetragonal ferroelastic domains in NBT were suppressed at room temperature with addition of BZT , which was responsible for the improved piezoelectric and optical properties of NBT –1.5 BZT single crystal.

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