Pseudocubic-based polymorphic phase boundary structures and their effect on the piezoelectric properties of (Li,Na,K)(Nb,Sb)O3-SrZrO3 lead-free ceramics

Ku Tak Lee; Dae Hyeon Kim; Sung Hoon Cho; Jeong Seog Kim; Jungho Ryu; Chel Woo Ahn; Tae Ho Lee; Gyeung Ho Kim; Sahn Nahm

doi:10.1016/j.jallcom.2019.01.011

Pseudocubic-based polymorphic phase boundary structures and their effect on the piezoelectric properties of (Li,Na,K)(Nb,Sb)O₃-SrZrO₃ lead-free ceramics

Ku Tak Lee, Dae Hyeon Kim, Sung Hoon Cho, Jeong Seog Kim, Jungho Ryu, Chel Woo Ahn, Tae Ho Lee, Gyeung Ho Kim, Sahn Nahm

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

23 Citations (Scopus)

Abstract

CuO-added 0.96(Li_xNa_0.5-xK_0.5)(Nb_1-ySb_y)O₃-0.04SrZrO₃ ceramics were sintered at 1020 °C for 6 h. Various crystal structures were synthesized in these specimens by controlling the Li₂CO₃ (x) and Sb₂O₅ (y) contents: pseudocubic, orthorhombic-pseudocubic polymorphic phase boundary (PPB), tetragonal-pseudocubic PPB, orthorhombic-tetragonal-pseudocubic PPB, and orthorhombic-tetragonal PPB structures. The pseudocubic structure developed in these specimens was similar to the R3m rhombohedral structure instead of the Pm3m cubic structure because the specimens with a pure pseudocubic structure showed good ferroelectric and piezoelectric properties. The piezoelectric properties of the specimens were influenced by their crystal structures. The specimen with the tetragonal-pseudocubic PPB structure showed the best piezoelectric properties because this structure was similar to the tetragonal-rhombohedral morphotropic phase boundary structure developed in Pb(Zr_1-xTi_x)O₃-based ceramics. In particular, the specimen with the tetragonal-pseudocubic PPB structure corresponding to x = 0.05 and y = 0.065 showed the largest d₃₃ and k_p values of 431 pC/N and 0.43, respectively.

Original language	English
Pages (from-to)	1334-1343
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	784
DOIs	https://doi.org/10.1016/j.jallcom.2019.01.011
Publication status	Published - 2019 May 5

Bibliographical note

Funding Information:
This research was supported by the 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.

Funding Information:
This research was supported by the 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 Elsevier B.V.

Keywords

(Li,Na,K)(Nb,Sb)O-SrZrO-based lead free piezoelectric ceramics
Piezoelectric properties
Polymorphic phase boundary structure
Pseudocubic structure

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2019.01.011

Cite this

@article{70c4263af6d34ec5b4914cf506a7cece,

title = "Pseudocubic-based polymorphic phase boundary structures and their effect on the piezoelectric properties of (Li,Na,K)(Nb,Sb)O3-SrZrO3 lead-free ceramics",

abstract = "CuO-added 0.96(LixNa0.5-xK0.5)(Nb1-ySby)O3-0.04SrZrO3 ceramics were sintered at 1020 °C for 6 h. Various crystal structures were synthesized in these specimens by controlling the Li2CO3 (x) and Sb2O5 (y) contents: pseudocubic, orthorhombic-pseudocubic polymorphic phase boundary (PPB), tetragonal-pseudocubic PPB, orthorhombic-tetragonal-pseudocubic PPB, and orthorhombic-tetragonal PPB structures. The pseudocubic structure developed in these specimens was similar to the R3m rhombohedral structure instead of the Pm3m cubic structure because the specimens with a pure pseudocubic structure showed good ferroelectric and piezoelectric properties. The piezoelectric properties of the specimens were influenced by their crystal structures. The specimen with the tetragonal-pseudocubic PPB structure showed the best piezoelectric properties because this structure was similar to the tetragonal-rhombohedral morphotropic phase boundary structure developed in Pb(Zr1-xTix)O3-based ceramics. In particular, the specimen with the tetragonal-pseudocubic PPB structure corresponding to x = 0.05 and y = 0.065 showed the largest d33 and kp values of 431 pC/N and 0.43, respectively.",

keywords = "(Li,Na,K)(Nb,Sb)O-SrZrO-based lead free piezoelectric ceramics, Piezoelectric properties, Polymorphic phase boundary structure, Pseudocubic structure",

author = "Lee, {Ku Tak} and Kim, {Dae Hyeon} and Cho, {Sung Hoon} and Kim, {Jeong Seog} and Jungho Ryu and Ahn, {Chel Woo} and Lee, {Tae Ho} and Kim, {Gyeung Ho} and Sahn Nahm",

note = "Funding Information: This research was supported by the 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. Funding Information: This research was supported by the 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 Elsevier B.V.",

year = "2019",

month = may,

day = "5",

doi = "10.1016/j.jallcom.2019.01.011",

language = "English",

volume = "784",

pages = "1334--1343",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Pseudocubic-based polymorphic phase boundary structures and their effect on the piezoelectric properties of (Li,Na,K)(Nb,Sb)O3-SrZrO3 lead-free ceramics

AU - Lee, Ku Tak

AU - Kim, Dae Hyeon

AU - Cho, Sung Hoon

AU - Kim, Jeong Seog

AU - Ryu, Jungho

AU - Ahn, Chel Woo

AU - Lee, Tae Ho

AU - Kim, Gyeung Ho

AU - Nahm, Sahn

N1 - Funding Information: This research was supported by the 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. Funding Information: This research was supported by the 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 Elsevier B.V.

PY - 2019/5/5

Y1 - 2019/5/5

N2 - CuO-added 0.96(LixNa0.5-xK0.5)(Nb1-ySby)O3-0.04SrZrO3 ceramics were sintered at 1020 °C for 6 h. Various crystal structures were synthesized in these specimens by controlling the Li2CO3 (x) and Sb2O5 (y) contents: pseudocubic, orthorhombic-pseudocubic polymorphic phase boundary (PPB), tetragonal-pseudocubic PPB, orthorhombic-tetragonal-pseudocubic PPB, and orthorhombic-tetragonal PPB structures. The pseudocubic structure developed in these specimens was similar to the R3m rhombohedral structure instead of the Pm3m cubic structure because the specimens with a pure pseudocubic structure showed good ferroelectric and piezoelectric properties. The piezoelectric properties of the specimens were influenced by their crystal structures. The specimen with the tetragonal-pseudocubic PPB structure showed the best piezoelectric properties because this structure was similar to the tetragonal-rhombohedral morphotropic phase boundary structure developed in Pb(Zr1-xTix)O3-based ceramics. In particular, the specimen with the tetragonal-pseudocubic PPB structure corresponding to x = 0.05 and y = 0.065 showed the largest d33 and kp values of 431 pC/N and 0.43, respectively.

AB - CuO-added 0.96(LixNa0.5-xK0.5)(Nb1-ySby)O3-0.04SrZrO3 ceramics were sintered at 1020 °C for 6 h. Various crystal structures were synthesized in these specimens by controlling the Li2CO3 (x) and Sb2O5 (y) contents: pseudocubic, orthorhombic-pseudocubic polymorphic phase boundary (PPB), tetragonal-pseudocubic PPB, orthorhombic-tetragonal-pseudocubic PPB, and orthorhombic-tetragonal PPB structures. The pseudocubic structure developed in these specimens was similar to the R3m rhombohedral structure instead of the Pm3m cubic structure because the specimens with a pure pseudocubic structure showed good ferroelectric and piezoelectric properties. The piezoelectric properties of the specimens were influenced by their crystal structures. The specimen with the tetragonal-pseudocubic PPB structure showed the best piezoelectric properties because this structure was similar to the tetragonal-rhombohedral morphotropic phase boundary structure developed in Pb(Zr1-xTix)O3-based ceramics. In particular, the specimen with the tetragonal-pseudocubic PPB structure corresponding to x = 0.05 and y = 0.065 showed the largest d33 and kp values of 431 pC/N and 0.43, respectively.

KW - (Li,Na,K)(Nb,Sb)O-SrZrO-based lead free piezoelectric ceramics

KW - Piezoelectric properties

KW - Polymorphic phase boundary structure

KW - Pseudocubic structure

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U2 - 10.1016/j.jallcom.2019.01.011

DO - 10.1016/j.jallcom.2019.01.011

M3 - Article

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