Phase transitions and electrical properties of (Na0.5K0.5)NbO3-Bi(Sc0.5Fe0.5)O3 lead-free piezoelectric ceramics
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
Lead-free ceramics (1-x)(Na0.5K0.5)NbO3-xBi(Sc0.5Fe0.5)O3 (KNN-BSF, x = 0−0.08) were synthesized by conventional solid-state sintering. A morphotropic phase boundary (MPB) is formed in the ceramics near x = 0.01−0.02 at room temperature by Xray analysis. Dielectric temperature spectra indicate the existence of two dielectric anomalous peaks, which correspond to orthorhombic-tetragonal (TOT) and tetragonal-cubic (TC) transitions. The ceramic with x = 0.0125 near the MPB exhibits the following optimal electrical properties: Pr = 33.9 μC/cm2, Ec = 18.1 kV/cm, d33 = 255 pC/N, kp = 0.44, and Tc = 372 oC.
Abstract
Lead-free ceramics (1-x)(Na0.5K0.5)NbO3-xBi(Sc0.5Fe0.5)O3 (KNN-BSF, x = 0−0.08) were synthesized by conventional solid-state sintering. A morphotropic phase boundary (MPB) is formed in the ceramics near x = 0.01−0.02 at room temperature by Xray analysis. Dielectric temperature spectra indicate the existence of two dielectric anomalous peaks, which correspond to orthorhombic-tetragonal (TOT) and tetragonal-cubic (TC) transitions. The ceramic with x = 0.0125 near the MPB exhibits the following optimal electrical properties: Pr = 33.9 μC/cm2, Ec = 18.1 kV/cm, d33 = 255 pC/N, kp = 0.44, and Tc = 372 oC.
참고문헌 (22)
- S.J. Zhang, , J. Electroceram, 19, pp.251~257 (2007)
- H. Takkao, , Nature, 432, pp.84~87 (2004)
- R.E. Jaeger, , J Am. Ceram Soc, 45, pp.209~213 (1962)
- Y.P. Guo, , Appl. Phys. Lett., 85, pp.4121~4123 (2004)
- B.P. Zhang, , J. Am. Ceram. Soc, 89, pp.1605~1609 (2006)
- J.F. Li, , J. Am. Ceram. Soc., 89, pp.706~709 (2006)
- H. Kazuhiko, , J. Eur. Ceram. Soc., 27, pp.4107~4110 (2007)
- H.L. Du, , Mater. Sci. Eng. B, 136, pp.165~169 (2007)
- P. Zhao, , Scripta Materialia, 58, pp.429~432 (2008)
- J.G. Wu, , J. Appl. Phys, 102, pp.114113~114115 (2007)
- R.Z. Zuo, , Appl. Phys. Lett, 90, pp.92904~3 (2007)
- Y.F. Chang, , Mater. Lett., 61(3), pp.785~789 (2007)
- H.Y. Park, , Appl. Phys. Lett, 89, pp.62906~3 (2006)
- D.M. Lin, , Appl. Phys. Lett., 91, pp.143513~3 (2007)
- H.L. Du, , J. Appl. Phys., 104, pp.34104~7 (2008)
- R.Z. Zuo, , J. Phys. Chem. Solids, 69, pp.230~235 (2008)
- M.M. Kumar, , Appl. Phys. Lett, 76, pp.2764~2766 (2000)
- A.A. Belik, , J. Am. Chem. Soc., 128, pp.706~707 (2006)
- D.I. Woodward, , J. Appl. Phys., 94, pp.3313~3318 (2003)
- S.J. Zhang, , J. Cryst. Growth, 236, pp.210~216 (2002)
- G. Shirane, , Phys. Rev., 96, pp.581~588 (1954)
- B. Jaffe, , J. Appl. Phys., 25, pp.809~810 (1954)