期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 93, 期 10, 页码 2915-2928出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1551-2916.2010.04107.x
关键词
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资金
- Ministry of Science and Technology of China [2008AA03Z410, 2006AA03Z107]
- 973 Program [2009CB623305]
- Natural Science Foundation of China [60837003, 50777065, 50602047]
- Shanghai Municipal Government [08JC1420500]
- Shanghai Institute of Ceramics of Chinese Academy of Sciences [SCX0608]
- National Engineering Research Center for Optoelectronic Crystalline Materials [2005DC105003, 2007K05]
Much attention is drawn to the fundamental research and the applications of the relaxor-based ferroelectrics for the next generation of piezoelectric devices. Mass production of Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) (PMNT) and ternary xPb(In1/2Nb1/2)O-3-yPb(Mg1/3Nb2/3)O-3-zPbTiO(3) (PIMNT) single crystals with a Bridgman method was reported. The piezoelectric, pyroelectric, and electric-optical performances of PMNT single crystals are much more excellent than traditional ceramics with the composition near morphotropic phase boundaries. Compared with PMNT crystal, PIMNT crystals can be used in a more broad range of device applications due to their high Curie temperature T-c and large coercive fields E-c. A relaxor-based Na0.5Bi0.5TiO3-xBaTiO(3) (NBBT) crystal grown by the top seeded solution growth method was also investigated to find a lead-free material with better piezoelectric performance. The properties of these relaxor-based single crystals were summarized. The mechanism of the enhanced piezoelectric response is discussed, based on the phase transitions induced by the variations of the temperature, pressure, composition, and electric field.
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