贺连星, 李毅, 李广成, 等. 无铅压电陶瓷材料研究进展[J]. 电子元件与材料, 2004, 23(11): 52-55. HE Lianxing, LI Yi, LI Guancheng, et al. Electron Compon Mater (in Chinese), 2004, 23(11): 52-55. [2] TAKENKA T, HUZUMI A, HATA T, et al. Mechanical properties of (BiNa)1/2TiO3-based piezoelectric ceramics [J]. Silic Ind, 1993, 7(8): 136-142. [3] LI Y M, CHEN W, ZHOU J, et al. Dielectric and piezoelectric properties of lead-free (Na0.5Bi0.5)TiO3-NaNbO3 ceramics [J]. Mater Sci Eng B, 2004, 112: 5-9. [4] SAITO Y, TAKAO H, TANI T, et al. Lead-free pizoceramics [J]. Nature, 2004, 432: 84-87. [5] GUO Y, KAKIMOTO K, OHSATO H, et al. Dielectric and piezoelectric properties of lead-free Na0.5K0.5NbO3-SrTiO3 ceramics [J]. Solid State Commun, 2004, 129: 279-284. [6] LI Y M, WANG J, LIAO R, et al. Synthesis and piezoelectric properties of KxNa1-xNbO3 ceramic by molten salt method [J]. J Alloys Compd, 2010, 496(1/2): 282-286. [7] DAI Y J, ZHANG X W, CHEN K P. Morphotropic phase boundary and electrical properties of K1-xNaxNbO3 lead-free ceramics [J] Appl Phys Lett, 2009, 94: 042905. [8] LI Y M, SHEN Z Y, JIANG L, et al. Microstructure, phase transition, and electrical properties of KxNa1-xNbO3 lead-free piezoceramics [J]. Mater Chem Phys, 2010, [9] ABRAHAMS S C, LEVINSTEIN H J, REDDY J M. Ferroelectric lithium niobate: polycrystal X-ray diffraction study between 24 ℃ and 1 200 ℃ [J]. J Phys Chem Solids, 1966, 27: 1019-1026 . [10] GUO Y, KAKIMOTO K, OHSATO H, et al. Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3- LiNbO3 ceramics [J]. Appl Phys Lett, 2004, 85(18): 4121-4123. [11] JAFFE B, COOK W R, JAFFE H. Piezoelectric Ceramics [M]. New York: Academic, 1971: 64-70. [12] EGERTON L, DILLON D M. piezoelectric and dielectric properties of ceramics in the system potassium-sodium niobate [J]. J Am Ceram Soc, 1959, 42: 438-442. [13] HOLLENSTEIN E, DAVIS M, DAMJANOVIC D, et al. Piezoelectric properties of Li and Ta modified (K0.5Na0.5)NbO3 ceramics [J]. Appl Phys Lett, 2005, 87(18): 182905. [14] WANG X X, TANG X G, KWOK K W, et al. Effect of excess Bi2O3 on the electrical properties and microstructure of(Bi1/2Na1/2)TiO3ceramics [J]. Appl Phys A, 2005, 80(5): 1071-1075. [15] AKDO?AN E K, KERMAN K, ABAZARI M, et al. Origin of high piezoelectric activity in ferroelectric (K0.44Na0.52Li0.04)-(Nb0.84Ta0.1? Sb0.06)O3 ceramics [J]. Appl Phys Lett, 2008, 92: 112908. [16] DAMJANOVIC D. A morphotropic phase boundary system based on polarization rotation and polarization extension [J]. Appl Phys Lett, 2010, 97(6): 062906. [17] SHEN Z Y, LI J F. Enhancement of piezoelectric constant d33 in BaTiO3 ceramics due to nano-domain structure [J]. J Ceram Soc Jpn, 2010, 118: 940-943. [18] CROSS L E. Relaxor ferroelectrics [J]. Ferroelectrics, 1987, 76: 241- 267. [19] FU J, ZUO R, WANG X, et al. Polymorphic phase transition and enhanced piezoelectric properties of LiTaO3-modified (Na0.52K0.48)? (Nb0.93Sb0.07)O3 lead-free ceramics [J]. J Phys D: Appl Phys, 2009, 42: 012006. [20] SHEN Z Y, LI J F, WANG K, et al. Electrical and mechanical properties of fine-grained Li/Ta-modified (Na,K)NbO3-based piezoceramics prepared by spark plasma sintering [J]. J Am Ceram Soc, 2010, 93: 1378-1383.