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

Department of Materials Science and Engineering

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

13 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

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 BV",

}

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

AN - SCOPUS:85060340126

SN - 0925-8388

VL - 784

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JO - Journal of Alloys and Compounds

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