Piezoelectric and dielectric properties of Bi 0 ˙ 5 (Na 0 ˙ 84 K 0 ˙ 16 ) 0 ˙ 5 TiO 3 –Ba(Zr 0 ˙ 04 Ti 0 ˙ 96 )O 3 lead free piezoelectric ceramics

Abstract

Lead free piezoelectric ceramics (1–x)Bi_0˙5 (Na_0˙84K_0˙16)_0˙5TiO₃–xBa(Zr_0˙04Ti_0˙96)O₃ (BNKT–BZT100x, wherein x ranged from 0 to 10 mol.-%) were fabricated by a conventional mixed oxide route, whose BZT content effect on electrical properties and crystalline structures was investigated. X-ray diffraction investigation showed that BZT effectively diffused into BNKT lattice and formed a solid solution during sintering, and their crystalline structures changed from rhombohedral phase to tetragonal phase as the BZT content was increased. Piezoelectric property measurements revealed that the BNKT–BZT4 ceramics had the highest piezoelectric performance: piezoelectric constant d₃₃ reached 178 pC N^–1 and planar electromechanical coupling factor k_p was up to 0˙33. The influence of Bi₂O₃ doped content on electrical properties and crystalline structure of the BNKT–BZT4 ceramics were also studied, and found that the piezoelectric property of the ceramics was enhanced when Bi₂O₃ was doped.

Keywords

LEAD FREE PIEZOELECTRIC CERAMICS MORPHOTROPIC PHASE BOUNDARY PIEZOELECTRIC PROPERTIES DIELECTRIC PROPERTIES

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References

Smolenskii

G. A.

, Isupov

V. A.

, Agranovskaya

A. I.

and Krainik

N. N.

: Soy. Phys. Solid State, 1961, 2, 2651–2654.

Zrirgzds

J. V.

, Kapostis

P. P.

and Kruzina

T. V.

: Ferroelectrics, 1980, 40, 75–77.

Hagiyev

M. S.

, Ismaizade

I. H.

and Abiyev

A. K.

: Ferroelectrics, 1984, 56, 215–217.

Isupov

V. A.

, Pronin

T. P.

and Kruzina

T. V.

: Ferroelectr. Lett., 1984, 2, 205–208.

Wang

X. X.

, Or

S. W.

, Tang

X. G.

, Chan

H. L. W.

, Choy

P. K.

and Liu

P. C. K.

: Solid State Commun., 2005, 134, 659–663.

Jiang

X. P.

, Li

L. Z.

, Zeng

and Chan

H. L. W.

: Mater. Lett., 2006, 60, 1786–1790.

Wang

X. X.

, Tang

X. G.

and Chan

H. L. W

: Appl. Phys. Lett., 2004, 85, 91–93.

Takenaka

, Maruyama

and Sakata

: Jpn J. Appl. Phys., 1991, 30, 2236–2239.

Takenaka

, Okuda

and Takegahara

: Ferroelectrics, 1997, 196, 175–178.

10.

Nagata

and Takenaka

: Jpn J. Appl. Phys., 1997, 36, 6055–6059.

11.

Sasaki

, Chiba

, Mamiya

and Otsuki

: Jpn J. Appl. Phys., 1999, 38, 5564–5567.

12.

Herabut

and Safari

: J. Am. Ceram. Soc., 1997, 80, 2954–2958.

13.

Wang

X. X.

, Kwok

K. W.

, Tang

X. G.

, Chan

H. L. W.

and Choy

C. L.

: Solid State Commun., 2004, 129, 319–322.

14.

Hennigs

and Schnell

: J. Am. Ceram. Soc., 1982, 65, 539–544.

15.

Chen

Z. W.

, Sui

A. Z.

, Lu

Z. Y.

and Liu

P. A.

: J. Ceram. Soc. Jpn, 2006, 114, 857–860.

16.

Jaffe

, Roth

R. S.

and Margullo

: J. Res. Bur. Stand:, 1955, 55, 239–243.

17.

Chen

, Li

Y. M.

, Xu

and Thou

: J. Electroceram., 2005, 15, 229–235.

18.

Onoe

and Jumonji

: J. Acoust. Soc. Am., 1967, 41, 974–978.

19.

Isupov

V. A.

and Stolypin

Y. E.

: J. Phys. Soc. Jpn, 1970, 28, 312–317.