Sintered composite for low temperature coefficient of piezoelectric property in knn based lead-free ceramics

Cheol Woo Ahn; Chee Sung Park; Shashank Priya

doi:10.1142/S1793604710000907

Sintered composite for low temperature coefficient of piezoelectric property in knn based lead-free ceramics

Cheol Woo Ahn, Chee Sung Park, Shashank Priya

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Abstract

We propose the design and synthesis of a polycrystalline sintered composite microstructure that leads to improved stability of piezoelectric response as a function of temperature in (K, Na)NbO₃ (KNN) based ceramics. The microstructure consists of matrix and island both of which have different composition and surface area. The matrix had much larger surface area and smaller orthorhombic to tetragonal transition temperature (T_O-T) than island. The composition corresponding to 0.99(K_0.48Na _0.48Li_0.04)(Nb_0.98Sb_0.02)O ₃-0.01BaTiO₃ (KNLNS-BT, T_O-T 33°C) was selected as matrix while (K_0.5Na_0.5)NbO₃ (KNN, T_O-T 206°C) was selected as island. The results show the flat electromechanical coupling factor from room temperature until 300°C.

Original language	English (US)
Pages (from-to)	35-39
Number of pages	5
Journal	Functional Materials Letters
Volume	3
Issue number	1
DOIs	https://doi.org/10.1142/S1793604710000907
State	Published - Mar 2010

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1142/S1793604710000907

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title = "Sintered composite for low temperature coefficient of piezoelectric property in knn based lead-free ceramics",

abstract = "We propose the design and synthesis of a polycrystalline sintered composite microstructure that leads to improved stability of piezoelectric response as a function of temperature in (K, Na)NbO3 (KNN) based ceramics. The microstructure consists of matrix and island both of which have different composition and surface area. The matrix had much larger surface area and smaller orthorhombic to tetragonal transition temperature (TO-T) than island. The composition corresponding to 0.99(K0.48Na 0.48Li0.04)(Nb0.98Sb0.02)O 3-0.01BaTiO3 (KNLNS-BT, TO-T 33°C) was selected as matrix while (K0.5Na0.5)NbO3 (KNN, TO-T 206°C) was selected as island. The results show the flat electromechanical coupling factor from room temperature until 300°C.",

author = "Ahn, {Cheol Woo} and Park, {Chee Sung} and Shashank Priya",

note = "Funding Information: The authors gratefully acknowledge financial support from Office of Basic Energy Sciences, Department of Energy. The authors would also like to thank NCFL, VT for their help in characterization.",

year = "2010",

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doi = "10.1142/S1793604710000907",

language = "English (US)",

volume = "3",

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publisher = "World Scientific",

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T1 - Sintered composite for low temperature coefficient of piezoelectric property in knn based lead-free ceramics

AU - Ahn, Cheol Woo

AU - Park, Chee Sung

AU - Priya, Shashank

N1 - Funding Information: The authors gratefully acknowledge financial support from Office of Basic Energy Sciences, Department of Energy. The authors would also like to thank NCFL, VT for their help in characterization.

PY - 2010/3

Y1 - 2010/3

N2 - We propose the design and synthesis of a polycrystalline sintered composite microstructure that leads to improved stability of piezoelectric response as a function of temperature in (K, Na)NbO3 (KNN) based ceramics. The microstructure consists of matrix and island both of which have different composition and surface area. The matrix had much larger surface area and smaller orthorhombic to tetragonal transition temperature (TO-T) than island. The composition corresponding to 0.99(K0.48Na 0.48Li0.04)(Nb0.98Sb0.02)O 3-0.01BaTiO3 (KNLNS-BT, TO-T 33°C) was selected as matrix while (K0.5Na0.5)NbO3 (KNN, TO-T 206°C) was selected as island. The results show the flat electromechanical coupling factor from room temperature until 300°C.

AB - We propose the design and synthesis of a polycrystalline sintered composite microstructure that leads to improved stability of piezoelectric response as a function of temperature in (K, Na)NbO3 (KNN) based ceramics. The microstructure consists of matrix and island both of which have different composition and surface area. The matrix had much larger surface area and smaller orthorhombic to tetragonal transition temperature (TO-T) than island. The composition corresponding to 0.99(K0.48Na 0.48Li0.04)(Nb0.98Sb0.02)O 3-0.01BaTiO3 (KNLNS-BT, TO-T 33°C) was selected as matrix while (K0.5Na0.5)NbO3 (KNN, TO-T 206°C) was selected as island. The results show the flat electromechanical coupling factor from room temperature until 300°C.

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Sintered composite for low temperature coefficient of piezoelectric property in knn based lead-free ceramics

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