Large Electrostrain in K(Nb1−xMnx)O3 Lead-Free Piezoelectric Ceramics

Jong Hyun Kim; Dae Hyeon Kim; Tae Ho Lee; Tae Gon Lee; Ji Hyun Lee; Bo Yun Kim; Sahn Nahm; Chong Yun Kang; Jungho Ryu

doi:10.1111/jace.14469

Large Electrostrain in K(Nb_1−xMn_x)O₃ Lead-Free Piezoelectric Ceramics

Jong Hyun Kim, Dae Hyeon Kim, Tae Ho Lee, Tae Gon Lee, Ji Hyun Lee, Bo Yun Kim, Sahn Nahm, Chong Yun Kang, Jungho Ryu

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

19 Citations (Scopus)

Abstract

K(Nb_1−xMn_x)O₃ (KN_1−xM_x) ceramics with 0.005 ≤ x ≤ 0.015 were sintered at 1020°C through a normal sintering process without the formation of a liquid phase. They exhibited double polarization versus electric field (P–E) hysteresis and sprout-shaped strain versus electric field (S–E) curves owing to the presence of a defect dipole (P_D), which was formed between the acceptor Mn³⁺ ion and the oxygen vacancy. Moreover, the aging process was not required to develop the P_D. The KN_1−xM_x ceramics exhibited a large strain of ~0.2% at 6.0 kV/mm. For the KN_0.985M_0.015 ceramic, this large strain was maintained after 10⁴ cycles of an electric field of 6.0 kV/mm. This ceramic also maintained a double hysteresis curve at 200°C. Therefore, the KN_0.985M_0.015 ceramic has a large electric field-induced strain, along with good thermal and fatigue properties for multilayer piezoelectric actuators.

Original language	English
Pages (from-to)	4031-4038
Number of pages	8
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	12
DOIs	https://doi.org/10.1111/jace.14469
Publication status	Published - 2016

Bibliographical note

Publisher Copyright:
© 2016 The American Ceramic Society

Keywords

ferroelectricity/ferroelectric materials
lead-free ceramics
piezoelectric materials/properties

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.14469

Cite this

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title = "Large Electrostrain in K(Nb1−xMnx)O3 Lead-Free Piezoelectric Ceramics",

abstract = "K(Nb1−xMnx)O3 (KN1−xMx) ceramics with 0.005 ≤ x ≤ 0.015 were sintered at 1020°C through a normal sintering process without the formation of a liquid phase. They exhibited double polarization versus electric field (P–E) hysteresis and sprout-shaped strain versus electric field (S–E) curves owing to the presence of a defect dipole (PD), which was formed between the acceptor Mn3+ ion and the oxygen vacancy. Moreover, the aging process was not required to develop the PD. The KN1−xMx ceramics exhibited a large strain of ~0.2% at 6.0 kV/mm. For the KN0.985M0.015 ceramic, this large strain was maintained after 104 cycles of an electric field of 6.0 kV/mm. This ceramic also maintained a double hysteresis curve at 200°C. Therefore, the KN0.985M0.015 ceramic has a large electric field-induced strain, along with good thermal and fatigue properties for multilayer piezoelectric actuators.",

keywords = "ferroelectricity/ferroelectric materials, lead-free ceramics, piezoelectric materials/properties",

author = "Kim, {Jong Hyun} and Kim, {Dae Hyeon} and Lee, {Tae Ho} and Lee, {Tae Gon} and Lee, {Ji Hyun} and Kim, {Bo Yun} and Sahn Nahm and Kang, {Chong Yun} and Jungho Ryu",

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doi = "10.1111/jace.14469",

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AU - Kim, Jong Hyun

AU - Kim, Dae Hyeon

AU - Lee, Tae Ho

AU - Lee, Tae Gon

AU - Lee, Ji Hyun

AU - Kim, Bo Yun

AU - Nahm, Sahn

AU - Kang, Chong Yun

AU - Ryu, Jungho

PY - 2016

Y1 - 2016

N2 - K(Nb1−xMnx)O3 (KN1−xMx) ceramics with 0.005 ≤ x ≤ 0.015 were sintered at 1020°C through a normal sintering process without the formation of a liquid phase. They exhibited double polarization versus electric field (P–E) hysteresis and sprout-shaped strain versus electric field (S–E) curves owing to the presence of a defect dipole (PD), which was formed between the acceptor Mn3+ ion and the oxygen vacancy. Moreover, the aging process was not required to develop the PD. The KN1−xMx ceramics exhibited a large strain of ~0.2% at 6.0 kV/mm. For the KN0.985M0.015 ceramic, this large strain was maintained after 104 cycles of an electric field of 6.0 kV/mm. This ceramic also maintained a double hysteresis curve at 200°C. Therefore, the KN0.985M0.015 ceramic has a large electric field-induced strain, along with good thermal and fatigue properties for multilayer piezoelectric actuators.

AB - K(Nb1−xMnx)O3 (KN1−xMx) ceramics with 0.005 ≤ x ≤ 0.015 were sintered at 1020°C through a normal sintering process without the formation of a liquid phase. They exhibited double polarization versus electric field (P–E) hysteresis and sprout-shaped strain versus electric field (S–E) curves owing to the presence of a defect dipole (PD), which was formed between the acceptor Mn3+ ion and the oxygen vacancy. Moreover, the aging process was not required to develop the PD. The KN1−xMx ceramics exhibited a large strain of ~0.2% at 6.0 kV/mm. For the KN0.985M0.015 ceramic, this large strain was maintained after 104 cycles of an electric field of 6.0 kV/mm. This ceramic also maintained a double hysteresis curve at 200°C. Therefore, the KN0.985M0.015 ceramic has a large electric field-induced strain, along with good thermal and fatigue properties for multilayer piezoelectric actuators.

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