New lead-free relaxor ferroelectrics derived from (K0.5Na 0.5)NbO3 for high temperature applications

Hongliang Du; Wancheng Zhou; Fa Luo; Dongmei Zhu; Shaobo Qu; Zhibin Pei

doi:10.1080/00150191003673881

New lead-free relaxor ferroelectrics derived from (K_0.5Na _0.5)NbO₃ for high temperature applications

Hongliang Du, Wancheng Zhou, Fa Luo, Dongmei Zhu, Shaobo Qu, Zhibin Pei

School of Materials Sience and Engineering

Research output: Contribution to journal › Conference article › peer-review

13 Scopus citations

Abstract

In order to develop high-temperature lead-free relaxor ferroelectrics, 0.95(K_0.5Na_0.5) NbO_3-0.05Ba(Mg _1/3Nb_2/3)O₃ (0.95KNN-0.05BMN) solid solution was synthesized by conventional solid-state sintering. The diffuse phase transition and the temperature of the maximum dielectric permittivity shifting towards higher temperature with increasing frequency, which are two typical characteristics for relaxor ferroelectrics, were observed in 0.95KNN-0.05BMN solid solution. The dielectric relaxor behavior obeys a modified Curie-Weiss law. The relaxor nature is attributed to the appearance of polar nano-regions. The results indicate that this material is indeed a lead-free relaxor ferroelectric with high T_m (∼200°C), useful for high temperature applications.

Original language	English
Pages (from-to)	141-147
Number of pages	7
Journal	Ferroelectrics
Volume	401
Issue number	1
DOIs	https://doi.org/10.1080/00150191003673881
State	Published - 2010
Event	12th International Meeting on Ferroelectricity, IMF-12 and the 18th IEEE International Symposium on Applications of Ferroelectrics, ISAF-18 - Xi'an, China Duration: 23 Aug 2009 → 27 Aug 2009

Keywords

High-temperature
Lead-free
Relaxor ferroelectrics

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10.1080/00150191003673881

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title = "New lead-free relaxor ferroelectrics derived from (K0.5Na 0.5)NbO3 for high temperature applications",

abstract = "In order to develop high-temperature lead-free relaxor ferroelectrics, 0.95(K0.5Na0.5) NbO3-0.05Ba(Mg 1/3Nb2/3)O3 (0.95KNN-0.05BMN) solid solution was synthesized by conventional solid-state sintering. The diffuse phase transition and the temperature of the maximum dielectric permittivity shifting towards higher temperature with increasing frequency, which are two typical characteristics for relaxor ferroelectrics, were observed in 0.95KNN-0.05BMN solid solution. The dielectric relaxor behavior obeys a modified Curie-Weiss law. The relaxor nature is attributed to the appearance of polar nano-regions. The results indicate that this material is indeed a lead-free relaxor ferroelectric with high Tm (∼200°C), useful for high temperature applications.",

keywords = "High-temperature, Lead-free, Relaxor ferroelectrics",

author = "Hongliang Du and Wancheng Zhou and Fa Luo and Dongmei Zhu and Shaobo Qu and Zhibin Pei",

year = "2010",

doi = "10.1080/00150191003673881",

language = "英语",

volume = "401",

pages = "141--147",

journal = "Ferroelectrics",

issn = "0015-0193",

publisher = "Taylor and Francis Ltd.",

number = "1",

note = "12th International Meeting on Ferroelectricity, IMF-12 and the 18th IEEE International Symposium on Applications of Ferroelectrics, ISAF-18 ; Conference date: 23-08-2009 Through 27-08-2009",

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TY - JOUR

T1 - New lead-free relaxor ferroelectrics derived from (K0.5Na 0.5)NbO3 for high temperature applications

AU - Du, Hongliang

AU - Zhou, Wancheng

AU - Luo, Fa

AU - Zhu, Dongmei

AU - Qu, Shaobo

AU - Pei, Zhibin

PY - 2010

Y1 - 2010

N2 - In order to develop high-temperature lead-free relaxor ferroelectrics, 0.95(K0.5Na0.5) NbO3-0.05Ba(Mg 1/3Nb2/3)O3 (0.95KNN-0.05BMN) solid solution was synthesized by conventional solid-state sintering. The diffuse phase transition and the temperature of the maximum dielectric permittivity shifting towards higher temperature with increasing frequency, which are two typical characteristics for relaxor ferroelectrics, were observed in 0.95KNN-0.05BMN solid solution. The dielectric relaxor behavior obeys a modified Curie-Weiss law. The relaxor nature is attributed to the appearance of polar nano-regions. The results indicate that this material is indeed a lead-free relaxor ferroelectric with high Tm (∼200°C), useful for high temperature applications.

AB - In order to develop high-temperature lead-free relaxor ferroelectrics, 0.95(K0.5Na0.5) NbO3-0.05Ba(Mg 1/3Nb2/3)O3 (0.95KNN-0.05BMN) solid solution was synthesized by conventional solid-state sintering. The diffuse phase transition and the temperature of the maximum dielectric permittivity shifting towards higher temperature with increasing frequency, which are two typical characteristics for relaxor ferroelectrics, were observed in 0.95KNN-0.05BMN solid solution. The dielectric relaxor behavior obeys a modified Curie-Weiss law. The relaxor nature is attributed to the appearance of polar nano-regions. The results indicate that this material is indeed a lead-free relaxor ferroelectric with high Tm (∼200°C), useful for high temperature applications.

KW - High-temperature

KW - Lead-free

KW - Relaxor ferroelectrics

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U2 - 10.1080/00150191003673881

DO - 10.1080/00150191003673881

M3 - 会议文章

AN - SCOPUS:79955693961

SN - 0015-0193

VL - 401

SP - 141

EP - 147

JO - Ferroelectrics

JF - Ferroelectrics

IS - 1

T2 - 12th International Meeting on Ferroelectricity, IMF-12 and the 18th IEEE International Symposium on Applications of Ferroelectrics, ISAF-18

Y2 - 23 August 2009 through 27 August 2009

ER -

New lead-free relaxor ferroelectrics derived from (K_0.5Na _0.5)NbO₃ for high temperature applications

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Keywords

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