Microstructure and piezoelectric properties of 0.95(Na0.5K0.5)NbO3-0.05SrTiO3 ceramics

被引：56

作者：

Cho, Kyung-Hoon

Park, Hwi-Yeol

Ahn, Cheol-Woo

Nahm, Sahn ^{[1
]}

Uchino, Kenji

Park, Seung-Ho

Lee, Hyeung-Gyu

Lee, Hwack-Joo

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[2] Penn State Univ, Mat Res Inst, Int Ctr Actuators & Transducers, University Pk, PA 16802 USA

[3] Korea Elect Technol Inst, Gyeonggido 463816, South Korea

[4] New Mat Evaluat Ctr, Korea Res Inst Standards & Sci, Taejon 305600, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 06期

关键词：

D O I：

10.1111/j.1551-2916.2007.01715.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The 0.95(Na0.5K0.5)NbO3-0.05SrTiO(3) (0.95NKN-0.05ST) ceramics formed in this study had a porous microstructure with small grains and low piezoelectric properties due to their low density. However, when a small amount of Na2O was intentionally subtracted from the 0.95NKN-0.05ST ceramics, a liquid phase was formed, which led to increased density and grain size. Piezoelectric properties were also improved for the Na2O-subtracted 0.95NKN-0.05ST ceramics. The increased density and grain size were responsible for the enhancement of the piezoelectric properties. In particular, the 0.95(Na0.49K0.5)NbO2.995-0.05ST ceramics showed high piezoelectric properties of d(33)=220, k(p)=0.4, Q(m)=72, and epsilon(T)(3)/epsilon(o)=1447, thereby demonstrating their promising potential as a candidate material for application to lead-free piezoelectric ceramics.

引用

页码：1946 / 1949

页数：4

共 17 条

[1] Effect of MnO2 on the piezoelectric properties of (1-x)(Na0.5K0.5)NbO3-xBaTiO3 ceramics [J].

Ahn, CW ;

Song, HC ;

Nahm, S ;

Park, SH ;

Uchino, K ;

Priya, S ;

Lee, HG ;

Kang, NK .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, 44 (42-45) :L1361-L1364

[2] PIEZOELECTRIC AND DIELECTRIC PROPERTIES OF CERAMICS IN THE SYSTEM POTASSIUM SODIUM NIOBATE [J].

EGERTON, L ;

DILLON, DM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1959, 42 (09) :438-442

[3] Dielectric and piezoelectric properties of lead-free (Na0.5K0.5)NbO3-SrTiO3 ceramics [J].

Guo, YP ;

Kakimoto, K ;

Ohsato, H .

SOLID STATE COMMUNICATIONS, 2004, 129 (05) :279-284

[4] Structure and electrical properties of lead-free (Na0.5K0.5)Nbo3-BaTiO3 ceramics [J].

Guo, YP ;

Kakimoto, K ;

Ohsato, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2004, 43 (9B) :6662-6666

[5] Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 ceramics [J].

Guo, YP ;

Kakimoto, K ;

Ohsato, H .

APPLIED PHYSICS LETTERS, 2004, 85 (18) :4121-4123

[6] PROPERTIES OF HOT-PRESSED FERROELECTRIC ALKALI NIOBATE CERAMICS [J].

HAERTLING, GH .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1967, 50 (06) :329-+

[7] Piezoelectric properties of Li- and Ta-modified (K0.5Na0.5)NbO3 ceramics -: art. no. 182905 [J].

Hollenstein, E ;

Davis, M ;

Damjanovic, D ;

Setter, N .

APPLIED PHYSICS LETTERS, 2005, 87 (18) :1-3

[8] Ferroelectric and piezoelectric properties of kNbO3 ceramics containing small amounts of LaFeO3 [J].

Kakimoto, K ;

Masuda, I ;

Ohsato, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2003, 42 (9B) :6102-6105

[9] Dielectric and ferroelectric properties of (1-x)(Na0.5K0.5)NbO3-xBaTiO3 ceramics [J].

Lu, YT ;

Chen, XM ;

Jin, DZ ;

Hu, X .

MATERIALS RESEARCH BULLETIN, 2005, 40 (10) :1847-1855

[10] Processing and piezoelectric properties of lead-free (K,Na) (Nb,Ta) O3 ceramics [J].

Matsubara, M ;

Yamaguchi, T ;

Sakamoto, W ;

Kikuta, K ;

Yogo, T ;

Hirano, S .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (05) :1190-1196

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