Thermally stable high strain and piezoelectric characteristics of (Li, Na, K)(Nb, Sb)O3-CaZrO3 ceramics for piezo actuators

Ku Tak Lee; Tae Gon Lee; Sun Woo Kim; Seok June Chae; Eun Ji Kim; Jeong Seog Kim; Ji Won Choi; Sahn Nahm

doi:10.1111/jace.16503

Thermally stable high strain and piezoelectric characteristics of (Li, Na, K)(Nb, Sb)O₃-CaZrO₃ ceramics for piezo actuators

Ku Tak Lee, Tae Gon Lee, Sun Woo Kim, Seok June Chae, Eun Ji Kim, Jeong Seog Kim, Ji Won Choi, Sahn Nahm

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

23 Citations (Scopus)

Abstract

The 0.97(Na_0.5K_0.5)(Nb_1−xSb_x)O₃-0.03CaZrO₃ ceramic with x = 0.09 exhibits a high d₃₃ of 518 pC/N and a strain of 0.13% at 4.0 kV/mm owing to its orthorhombic-pseudocubic polymorphic phase boundary (PPB) structure. However, these values decreased considerably above 90°C owing to its low Curie temperature (T_C), indicating that its thermal stability is not sufficient for practical applications. Li₂O was added to the specimen with x = 0.11 to improve its thermal stability of the strain and d₃₃ by increasing the T_C without degrading the actual d₃₃ and strain values. The 0.97(Li_0.04Na_0.46K_0.5)(Nb_0.89Sb_0.11)O₃-0.03CaZrO₃ ceramic, having an orthorhombic-tetragonal PPB structure, exhibits a d₃₃ of 502 pC/N and a strain of 0.16%. This large strain was maintained up to 150°C and the d₃₃ slightly decreased to 475 pC/N at 130°C. Therefore, this lead-free ceramic displays excellent piezoelectric characteristics with improved thermal stability, indicating that it can be applied to piezoelectric actuators.

Original language	English
Pages (from-to)	6115-6125
Number of pages	11
Journal	Journal of the American Ceramic Society
Volume	102
Issue number	10
DOIs	https://doi.org/10.1111/jace.16503
Publication status	Published - 2019

Bibliographical note

Funding Information:
This research was supported by a National Research Council of Science & Technology (NST) grant from the Korean government (MSIP) (grant number CAP-17-04-KRISS). The authors also thank the KU-KIST Graduate School Program of Korea University.

Publisher Copyright:
© 2019 The American Ceramic Society

Keywords

lead-free ceramics
phase transition
piezoelectric materials/properties
strain
thermal properties

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.16503

Cite this

@article{ec771ec277f34b06a768a0ee5b94ca4f,

title = "Thermally stable high strain and piezoelectric characteristics of (Li, Na, K)(Nb, Sb)O3-CaZrO3 ceramics for piezo actuators",

abstract = "The 0.97(Na0.5K0.5)(Nb1−xSbx)O3-0.03CaZrO3 ceramic with x = 0.09 exhibits a high d33 of 518 pC/N and a strain of 0.13% at 4.0 kV/mm owing to its orthorhombic-pseudocubic polymorphic phase boundary (PPB) structure. However, these values decreased considerably above 90°C owing to its low Curie temperature (TC), indicating that its thermal stability is not sufficient for practical applications. Li2O was added to the specimen with x = 0.11 to improve its thermal stability of the strain and d33 by increasing the TC without degrading the actual d33 and strain values. The 0.97(Li0.04Na0.46K0.5)(Nb0.89Sb0.11)O3-0.03CaZrO3 ceramic, having an orthorhombic-tetragonal PPB structure, exhibits a d33 of 502 pC/N and a strain of 0.16%. This large strain was maintained up to 150°C and the d33 slightly decreased to 475 pC/N at 130°C. Therefore, this lead-free ceramic displays excellent piezoelectric characteristics with improved thermal stability, indicating that it can be applied to piezoelectric actuators.",

keywords = "lead-free ceramics, phase transition, piezoelectric materials/properties, strain, thermal properties",

author = "Lee, {Ku Tak} and Lee, {Tae Gon} and Kim, {Sun Woo} and Chae, {Seok June} and Kim, {Eun Ji} and Kim, {Jeong Seog} and Choi, {Ji Won} and Sahn Nahm",

note = "Funding Information: This research was supported by a National Research Council of Science & Technology (NST) grant from the Korean government (MSIP) (grant number CAP-17-04-KRISS). The authors also thank the KU-KIST Graduate School Program of Korea University. Publisher Copyright: {\textcopyright} 2019 The American Ceramic Society",

year = "2019",

doi = "10.1111/jace.16503",

language = "English",

volume = "102",

pages = "6115--6125",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Thermally stable high strain and piezoelectric characteristics of (Li, Na, K)(Nb, Sb)O3-CaZrO3 ceramics for piezo actuators

AU - Lee, Ku Tak

AU - Lee, Tae Gon

AU - Kim, Sun Woo

AU - Chae, Seok June

AU - Kim, Eun Ji

AU - Kim, Jeong Seog

AU - Choi, Ji Won

AU - Nahm, Sahn

N1 - Funding Information: This research was supported by a National Research Council of Science & Technology (NST) grant from the Korean government (MSIP) (grant number CAP-17-04-KRISS). The authors also thank the KU-KIST Graduate School Program of Korea University. Publisher Copyright: © 2019 The American Ceramic Society

PY - 2019

Y1 - 2019

N2 - The 0.97(Na0.5K0.5)(Nb1−xSbx)O3-0.03CaZrO3 ceramic with x = 0.09 exhibits a high d33 of 518 pC/N and a strain of 0.13% at 4.0 kV/mm owing to its orthorhombic-pseudocubic polymorphic phase boundary (PPB) structure. However, these values decreased considerably above 90°C owing to its low Curie temperature (TC), indicating that its thermal stability is not sufficient for practical applications. Li2O was added to the specimen with x = 0.11 to improve its thermal stability of the strain and d33 by increasing the TC without degrading the actual d33 and strain values. The 0.97(Li0.04Na0.46K0.5)(Nb0.89Sb0.11)O3-0.03CaZrO3 ceramic, having an orthorhombic-tetragonal PPB structure, exhibits a d33 of 502 pC/N and a strain of 0.16%. This large strain was maintained up to 150°C and the d33 slightly decreased to 475 pC/N at 130°C. Therefore, this lead-free ceramic displays excellent piezoelectric characteristics with improved thermal stability, indicating that it can be applied to piezoelectric actuators.

AB - The 0.97(Na0.5K0.5)(Nb1−xSbx)O3-0.03CaZrO3 ceramic with x = 0.09 exhibits a high d33 of 518 pC/N and a strain of 0.13% at 4.0 kV/mm owing to its orthorhombic-pseudocubic polymorphic phase boundary (PPB) structure. However, these values decreased considerably above 90°C owing to its low Curie temperature (TC), indicating that its thermal stability is not sufficient for practical applications. Li2O was added to the specimen with x = 0.11 to improve its thermal stability of the strain and d33 by increasing the TC without degrading the actual d33 and strain values. The 0.97(Li0.04Na0.46K0.5)(Nb0.89Sb0.11)O3-0.03CaZrO3 ceramic, having an orthorhombic-tetragonal PPB structure, exhibits a d33 of 502 pC/N and a strain of 0.16%. This large strain was maintained up to 150°C and the d33 slightly decreased to 475 pC/N at 130°C. Therefore, this lead-free ceramic displays excellent piezoelectric characteristics with improved thermal stability, indicating that it can be applied to piezoelectric actuators.

KW - lead-free ceramics

KW - phase transition

KW - piezoelectric materials/properties

KW - strain

KW - thermal properties

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U2 - 10.1111/jace.16503

DO - 10.1111/jace.16503

M3 - Article

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