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	Piezoelectric properties of low-temperature sintered Li-modified (Na, K)NbO/sub 3/ lead-free ceramics
	Ke Wang ; Jing-Feng Li ; Nan Liu
	2010-10-12 ; 2010-10-12
关键词	Experimental/ crystal structure Curie temperature permittivity piezoceramics potassium compounds sintering sodium compounds solid-state phase transformations/ lead-free piezoceramics crystal structure phase transition piezoelectric constant electromechanical coupling factor Curie temperature low-temperature sintering temperature 900 degC temperature 475 degC (Na/sub 0.535/K/sub 0.48/)NbO/sub 3/-LiNbO/sub 3// A7760 Piezoelectricity and electrostriction A7720 Dielectric permittivity A6160 Crystal structure of specific inorganic compounds A6470K Solid-solid transitions/ temperature 1.17315E+03 K temperature 7.4815E+02 K/ Na0.535K0.48NbO3LiNbO3/ss Na0.535/ss K0.48/ss NbO3/ss O3/ss Li/ss Na/ss Nb/ss K/ss O/ss
中文摘要	LiNbO/sub 3/-doped (Na, K)NbO/sub 3/ lead-free piezoceramics were prepared by conventional sintering at a temperature as low as 950 degrees C using excess Na/sub 2/O additives. The crystal structure changed from orthorhombic to tetragonal with increasing LiNbO/sub 3/ amount since the phase transition temperature T/sub O-T/ shifted downward. In the region of two-phase coexistence, enhanced piezoelectric constant d/sub 33/ (280 pC/N) and electromechanical coupling factor k/sub p/ (48.3%) with a high Curie temperature T/sub C/ (475 degrees C) were obtained in the nominal composition 0.92(Na/sub 0.535/K/sub 0.48/)NbO/sub 3/-0.08LiNbO/sub 3/. Our results open up the way to low-temperature sintering of (Na, K)NbO/sub 3/-based lead-free piezoceramics with high performance.
语种	英语
出版者	American Institute of Physics ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78537]
专题	清华大学
推荐引用方式 GB/T 7714	Ke Wang,Jing-Feng Li,Nan Liu. Piezoelectric properties of low-temperature sintered Li-modified (Na, K)NbO/sub 3/ lead-free ceramics[J],2010, 2010.
APA	Ke Wang,Jing-Feng Li,&Nan Liu.(2010).Piezoelectric properties of low-temperature sintered Li-modified (Na, K)NbO/sub 3/ lead-free ceramics..
MLA	Ke Wang,et al."Piezoelectric properties of low-temperature sintered Li-modified (Na, K)NbO/sub 3/ lead-free ceramics".(2010).

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