Effect of Li2O on the defect polarization in CuO-added (K0.9Na0.1)NbO3 piezoelectric ceramics

Dae Hyeon Kim; Jongseong Park; Tae Gon Lee; Sung Hoon Cho; Su Jin Park; Ku Tak Lee; Jong Hyun Kim; Sahn Nahm

doi:10.1111/jace.15047

Effect of Li₂O on the defect polarization in CuO-added (K_0.9Na_0.1)NbO₃ piezoelectric ceramics

Dae Hyeon Kim, Jongseong Park, Tae Gon Lee, Sung Hoon Cho, Su Jin Park, Ku Tak Lee, Jong Hyun Kim, Sahn Nahm

Department of Materials Science and Engineering

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

Abstract

CuO-added (Li_xK_0.9−xNa_0.1)NbO₃ [C(L_xK_0.9−xN_0.1)N] ceramics with 0.0≤x≤0.05 were well-sintered at 960°C for 6 hours. The lattice parameters of the specimens decreased with the addition of Li₂O. Defect polarization (P_D) formed between Cu²⁺ions and oxygen vacancies. Double polarization vs electric field (P-E) hysteresis and sprout-shaped strain vs electric field (S-E) curves were observed in these specimens with a large strain of 0.16% at 7.0 kV/mm, possibly owing to the presence of P_D. When the P-E curve was measured at temperatures higher than 75°C, the C(K_0.9N_0.1)N ceramic exhibited a normal P-E hysteresis curve, whereas the C(L_0.04K_0.86N_0.1)N ceramic maintained the double P-E hysteresis curve up to 125°C, indicating that Li₂O increased the thermal stability of P_D. The latter specimen also showed the sprout shaped S-E curve with a strain of 0.15% at 7.0 kV/mm after 10⁴ cycles of a high electric field of 7.0 kV/mm.

Original language	English
Pages (from-to)	5193-5201
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	100
Issue number	11
DOIs	https://doi.org/10.1111/jace.15047
Publication status	Published - 2017 Nov

Keywords

lead-free ceramics
low temperature
piezoelectric materials/properties

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.15047

Cite this

@article{8ef2492ec91747daa6687f5189c7d517,

title = "Effect of Li2O on the defect polarization in CuO-added (K0.9Na0.1)NbO3 piezoelectric ceramics",

abstract = "CuO-added (LixK0.9−xNa0.1)NbO3 [C(LxK0.9−xN0.1)N] ceramics with 0.0≤x≤0.05 were well-sintered at 960°C for 6 hours. The lattice parameters of the specimens decreased with the addition of Li2O. Defect polarization (PD) formed between Cu2+ions and oxygen vacancies. Double polarization vs electric field (P-E) hysteresis and sprout-shaped strain vs electric field (S-E) curves were observed in these specimens with a large strain of 0.16% at 7.0 kV/mm, possibly owing to the presence of PD. When the P-E curve was measured at temperatures higher than 75°C, the C(K0.9N0.1)N ceramic exhibited a normal P-E hysteresis curve, whereas the C(L0.04K0.86N0.1)N ceramic maintained the double P-E hysteresis curve up to 125°C, indicating that Li2O increased the thermal stability of PD. The latter specimen also showed the sprout shaped S-E curve with a strain of 0.15% at 7.0 kV/mm after 104 cycles of a high electric field of 7.0 kV/mm.",

keywords = "lead-free ceramics, low temperature, piezoelectric materials/properties",

author = "Kim, {Dae Hyeon} and Jongseong Park and Lee, {Tae Gon} and Cho, {Sung Hoon} and Park, {Su Jin} and Lee, {Ku Tak} and Kim, {Jong Hyun} and Sahn Nahm",

note = "Funding Information: This work was supported by the Energy Technology Development Project (KETEP) grant funded by the Ministry of Trade, Industry and Energy, Republic of Korea (Piezoelectric Energy Harvester Development and Demonstration for scavenging Energy from Road Traffic System, project No. 20142020103970). This work was also supported by the KU-KIST Graduate School of Converging Science and Technology Program. Publisher Copyright: {\textcopyright} 2017 The American Ceramic Society Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2017",

month = nov,

doi = "10.1111/jace.15047",

language = "English",

volume = "100",

pages = "5193--5201",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "11",

}

TY - JOUR

T1 - Effect of Li2O on the defect polarization in CuO-added (K0.9Na0.1)NbO3 piezoelectric ceramics

AU - Kim, Dae Hyeon

AU - Park, Jongseong

AU - Lee, Tae Gon

AU - Cho, Sung Hoon

AU - Park, Su Jin

AU - Lee, Ku Tak

AU - Kim, Jong Hyun

AU - Nahm, Sahn

N1 - Funding Information: This work was supported by the Energy Technology Development Project (KETEP) grant funded by the Ministry of Trade, Industry and Energy, Republic of Korea (Piezoelectric Energy Harvester Development and Demonstration for scavenging Energy from Road Traffic System, project No. 20142020103970). This work was also supported by the KU-KIST Graduate School of Converging Science and Technology Program. Publisher Copyright: © 2017 The American Ceramic Society Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2017/11

Y1 - 2017/11

N2 - CuO-added (LixK0.9−xNa0.1)NbO3 [C(LxK0.9−xN0.1)N] ceramics with 0.0≤x≤0.05 were well-sintered at 960°C for 6 hours. The lattice parameters of the specimens decreased with the addition of Li2O. Defect polarization (PD) formed between Cu2+ions and oxygen vacancies. Double polarization vs electric field (P-E) hysteresis and sprout-shaped strain vs electric field (S-E) curves were observed in these specimens with a large strain of 0.16% at 7.0 kV/mm, possibly owing to the presence of PD. When the P-E curve was measured at temperatures higher than 75°C, the C(K0.9N0.1)N ceramic exhibited a normal P-E hysteresis curve, whereas the C(L0.04K0.86N0.1)N ceramic maintained the double P-E hysteresis curve up to 125°C, indicating that Li2O increased the thermal stability of PD. The latter specimen also showed the sprout shaped S-E curve with a strain of 0.15% at 7.0 kV/mm after 104 cycles of a high electric field of 7.0 kV/mm.

AB - CuO-added (LixK0.9−xNa0.1)NbO3 [C(LxK0.9−xN0.1)N] ceramics with 0.0≤x≤0.05 were well-sintered at 960°C for 6 hours. The lattice parameters of the specimens decreased with the addition of Li2O. Defect polarization (PD) formed between Cu2+ions and oxygen vacancies. Double polarization vs electric field (P-E) hysteresis and sprout-shaped strain vs electric field (S-E) curves were observed in these specimens with a large strain of 0.16% at 7.0 kV/mm, possibly owing to the presence of PD. When the P-E curve was measured at temperatures higher than 75°C, the C(K0.9N0.1)N ceramic exhibited a normal P-E hysteresis curve, whereas the C(L0.04K0.86N0.1)N ceramic maintained the double P-E hysteresis curve up to 125°C, indicating that Li2O increased the thermal stability of PD. The latter specimen also showed the sprout shaped S-E curve with a strain of 0.15% at 7.0 kV/mm after 104 cycles of a high electric field of 7.0 kV/mm.

KW - lead-free ceramics

KW - low temperature

KW - piezoelectric materials/properties

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U2 - 10.1111/jace.15047

DO - 10.1111/jace.15047

M3 - Article

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SN - 0002-7820

VL - 100

SP - 5193

EP - 5201

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 11

ER -