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

Department of Materials Science and Engineering

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

16 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

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",

number = "10",

}

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

AN - SCOPUS:85065259102

SN - 0002-7820

VL - 102

SP - 6115

EP - 6125

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 10

ER -