Large strain response with low driving field in Bi1/2Na1/2TiO3–Bi1/2K1/2TiO3–Bi(Mg2/3Nb1/3)O3 ceramics

Guangzhi Dong; Huiqing Fan; Jing Shi; Qiang Li

doi:10.1111/jace.15589

Large strain response with low driving field in Bi_1/2Na_1/2TiO₃–Bi_1/2K_1/2TiO₃–Bi(Mg_2/3Nb_1/3)O₃ ceramics

Guangzhi Dong, Huiqing Fan, Jing Shi, Qiang Li

School of Materials Sience and Engineering

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

53 Scopus citations

Abstract

The (1−x)(0.8Bi_1/2Na_1/2TiO₃–0.2Bi_1/2K_1/2TiO₃)−xBiMg_2/3Nb_1/3O₃ (100xBMN) ternary solid solutions were designed and prepared using a conventional solid-state reaction. Temperature and compositional dependent ferroelectric, piezoelectric, dielectric features, and structural evolution were systematically studied. At the critical composition of 2BMN, a large bipolar strain of 0.43% was achieved at 55 kV/cm, and the normalized strain reaches to 862 pm/V at a low driving electric field of 40 kV/cm. It was found that the substitution of BiMg_2/3Nb_1/3O₃ induces a transformation from ferroelectric to relaxor phase by disrupting the long range ferroelectric order. Therefore, as the external electric field was applied, a relaxor-ferroelectric phase transition will be induced. This is contributed to the giant strain. The results above suggest that such a ternary composition is a promising candidate for application to actuator.

Original language	English
Pages (from-to)	3947-3955
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	101
Issue number	9
DOIs	https://doi.org/10.1111/jace.15589
State	Published - Sep 2018

Keywords

lead-free ceramics
piezoelectric materials/properties
relaxors
strain

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title = "Large strain response with low driving field in Bi1/2Na1/2TiO3–Bi1/2K1/2TiO3–Bi(Mg2/3Nb1/3)O3 ceramics",

abstract = "The (1−x)(0.8Bi1/2Na1/2TiO3–0.2Bi1/2K1/2TiO3)−xBiMg2/3Nb1/3O3 (100xBMN) ternary solid solutions were designed and prepared using a conventional solid-state reaction. Temperature and compositional dependent ferroelectric, piezoelectric, dielectric features, and structural evolution were systematically studied. At the critical composition of 2BMN, a large bipolar strain of 0.43% was achieved at 55 kV/cm, and the normalized strain reaches to 862 pm/V at a low driving electric field of 40 kV/cm. It was found that the substitution of BiMg2/3Nb1/3O3 induces a transformation from ferroelectric to relaxor phase by disrupting the long range ferroelectric order. Therefore, as the external electric field was applied, a relaxor-ferroelectric phase transition will be induced. This is contributed to the giant strain. The results above suggest that such a ternary composition is a promising candidate for application to actuator.",

keywords = "lead-free ceramics, piezoelectric materials/properties, relaxors, strain",

author = "Guangzhi Dong and Huiqing Fan and Jing Shi and Qiang Li",

note = "Publisher Copyright: {\textcopyright} 2018 The American Ceramic Society",

year = "2018",

month = sep,

doi = "10.1111/jace.15589",

language = "英语",

volume = "101",

pages = "3947--3955",

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T1 - Large strain response with low driving field in Bi1/2Na1/2TiO3–Bi1/2K1/2TiO3–Bi(Mg2/3Nb1/3)O3 ceramics

AU - Dong, Guangzhi

AU - Fan, Huiqing

AU - Shi, Jing

AU - Li, Qiang

PY - 2018/9

Y1 - 2018/9

N2 - The (1−x)(0.8Bi1/2Na1/2TiO3–0.2Bi1/2K1/2TiO3)−xBiMg2/3Nb1/3O3 (100xBMN) ternary solid solutions were designed and prepared using a conventional solid-state reaction. Temperature and compositional dependent ferroelectric, piezoelectric, dielectric features, and structural evolution were systematically studied. At the critical composition of 2BMN, a large bipolar strain of 0.43% was achieved at 55 kV/cm, and the normalized strain reaches to 862 pm/V at a low driving electric field of 40 kV/cm. It was found that the substitution of BiMg2/3Nb1/3O3 induces a transformation from ferroelectric to relaxor phase by disrupting the long range ferroelectric order. Therefore, as the external electric field was applied, a relaxor-ferroelectric phase transition will be induced. This is contributed to the giant strain. The results above suggest that such a ternary composition is a promising candidate for application to actuator.

AB - The (1−x)(0.8Bi1/2Na1/2TiO3–0.2Bi1/2K1/2TiO3)−xBiMg2/3Nb1/3O3 (100xBMN) ternary solid solutions were designed and prepared using a conventional solid-state reaction. Temperature and compositional dependent ferroelectric, piezoelectric, dielectric features, and structural evolution were systematically studied. At the critical composition of 2BMN, a large bipolar strain of 0.43% was achieved at 55 kV/cm, and the normalized strain reaches to 862 pm/V at a low driving electric field of 40 kV/cm. It was found that the substitution of BiMg2/3Nb1/3O3 induces a transformation from ferroelectric to relaxor phase by disrupting the long range ferroelectric order. Therefore, as the external electric field was applied, a relaxor-ferroelectric phase transition will be induced. This is contributed to the giant strain. The results above suggest that such a ternary composition is a promising candidate for application to actuator.

KW - lead-free ceramics

KW - piezoelectric materials/properties

KW - relaxors

KW - strain

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DO - 10.1111/jace.15589

M3 - 文章

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SN - 0002-7820

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

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ER -

Large strain response with low driving field in Bi_1/2Na_1/2TiO₃–Bi_1/2K_1/2TiO₃–Bi(Mg_2/3Nb_1/3)O₃ ceramics

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