Low temperature sintering and piezoelectric properties of CuO-doped (K 0.5Na0.5)NbO3 ceramics

Cheol Woo Ahn; Makarand Karmarkar; Dwight Viehland; Dong Heon Kang; Kyoo Sik Bae; Shashank Priya

doi:10.1080/07315170802353058

Low temperature sintering and piezoelectric properties of CuO-doped (K _0.5Na_0.5)NbO₃ ceramics

Cheol Woo Ahn, Makarand Karmarkar, Dwight Viehland, Dong Heon Kang, Kyoo Sik Bae, Shashank Priya

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

(Na_0.5K_0.5)NbO₃ ceramics require sintering below 1,000°C to avoid the problem of Na-volatilization which results in lower resistivity. In this study we report the effect of CuO on the sintering behavior of (Na0.5K0.5)NbO3 ceramics. It was found that (Na_0.5K _0.5)NbO₃+ 1.5 mol% CuO ceramics sintered at 950°C for 2 hr exhibit excellent piezoelectric properties of d₃₃ = 100 pC/N, kp = 0.36, and Q_m = 1200. The remanent polarization and coercive field of this composition were of the order of 21.94 μ C/cm² and 1.2 kV/mm. These results are very promising for the hard lead free piezoelectric ceramics.

Original language	English (US)
Pages (from-to)	66-72
Number of pages	7
Journal	Ferroelectrics, Letters Section
Volume	35
Issue number	3-4
DOIs	https://doi.org/10.1080/07315170802353058
State	Published - 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Low temperature sintering and piezoelectric properties of CuO-doped (K 0.5Na0.5)NbO3 ceramics",

abstract = "(Na0.5K0.5)NbO3 ceramics require sintering below 1,000°C to avoid the problem of Na-volatilization which results in lower resistivity. In this study we report the effect of CuO on the sintering behavior of (Na0.5K0.5)NbO3 ceramics. It was found that (Na0.5K 0.5)NbO3+ 1.5 mol% CuO ceramics sintered at 950°C for 2 hr exhibit excellent piezoelectric properties of d33 = 100 pC/N, kp = 0.36, and Qm = 1200. The remanent polarization and coercive field of this composition were of the order of 21.94 μ C/cm2 and 1.2 kV/mm. These results are very promising for the hard lead free piezoelectric ceramics.",

author = "Ahn, {Cheol Woo} and Makarand Karmarkar and Dwight Viehland and Kang, {Dong Heon} and Bae, {Kyoo Sik} and Shashank Priya",

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T1 - Low temperature sintering and piezoelectric properties of CuO-doped (K 0.5Na0.5)NbO3 ceramics

AU - Ahn, Cheol Woo

AU - Karmarkar, Makarand

AU - Viehland, Dwight

AU - Kang, Dong Heon

AU - Bae, Kyoo Sik

AU - Priya, Shashank

PY - 2008

Y1 - 2008

N2 - (Na0.5K0.5)NbO3 ceramics require sintering below 1,000°C to avoid the problem of Na-volatilization which results in lower resistivity. In this study we report the effect of CuO on the sintering behavior of (Na0.5K0.5)NbO3 ceramics. It was found that (Na0.5K 0.5)NbO3+ 1.5 mol% CuO ceramics sintered at 950°C for 2 hr exhibit excellent piezoelectric properties of d33 = 100 pC/N, kp = 0.36, and Qm = 1200. The remanent polarization and coercive field of this composition were of the order of 21.94 μ C/cm2 and 1.2 kV/mm. These results are very promising for the hard lead free piezoelectric ceramics.

AB - (Na0.5K0.5)NbO3 ceramics require sintering below 1,000°C to avoid the problem of Na-volatilization which results in lower resistivity. In this study we report the effect of CuO on the sintering behavior of (Na0.5K0.5)NbO3 ceramics. It was found that (Na0.5K 0.5)NbO3+ 1.5 mol% CuO ceramics sintered at 950°C for 2 hr exhibit excellent piezoelectric properties of d33 = 100 pC/N, kp = 0.36, and Qm = 1200. The remanent polarization and coercive field of this composition were of the order of 21.94 μ C/cm2 and 1.2 kV/mm. These results are very promising for the hard lead free piezoelectric ceramics.

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Low temperature sintering and piezoelectric properties of CuO-doped (K _0.5Na_0.5)NbO₃ ceramics

Abstract

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