Characteristics of giant piezoelectricity around the rhombohedral-tetragonal phase boundary in (K,Na) NbO3-based ceramics with different additives

CAS OpenIR > 中科院上海应用物理研究所2011-2020年

	Characteristics of giant piezoelectricity around the rhombohedral-tetragonal phase boundary in (K,Na) NbO3-based ceramics with different additives
	Wang, XP; Zheng, T; Wu, JG; Xiao, DQ; Zhu, JG; Wang, H; Wang, XJ; Lou, XJ; Gu, YL; Wu, JG (reprint author), Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China.
	2015
Source Publication	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
Volume	3 Issue:31 Pages:15951—15961
Subtype	期刊文献
Abstract	In this work, we confirmed the electric-induced transition (EPT) in (K, Na) NbO3-based ceramics through experiment and theory. Through in situ X-ray diffraction measurements, electric field-induced phases (EPs) could be observed in the ceramics. To explain the appearance of EPs, a new function lambda(Eex) was introduced into the six order Devonshire theory when the external electric field was applied. Further studies indicate that EPT had two possible forms, i. e., tetragonal-electric induced phase transition (T-EP) and rhombohedral-electric induced phase transition (R-EP), and T-EP plays a more positive role than R-EP in terms of the piezoelectric response. Also, a giant piezoelectricity (d(33) = 435-490 p(C) N-1), a high Curie temperature (T-C = 205-234 degrees C), and a converse piezoelectric coefficient (d(33)* = 500-890 pm V-1) can be achieved by choosing optimum metal oxides as well as their content. We believe that such work could help to further study the physical mechanisms of giant piezoelectricity in potassium-sodium niobate.
Keyword	Lead-free Piezoceramics Electrical-properties Solid-solution Sintering Aid Pzt Ceramics Strain Behavior
Indexed By	SCI
Language	英语
WOS ID	WOS:000358722200020
Citation statistics	Cited Times:29[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/24881
Collection	中科院上海应用物理研究所2011-2020年
Corresponding Author	Wu, JG (reprint author), Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China.
Recommended Citation GB/T 7714	Wang, XP,Zheng, T,Wu, JG,et al. Characteristics of giant piezoelectricity around the rhombohedral-tetragonal phase boundary in (K,Na) NbO3-based ceramics with different additives[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(31):15951—15961.
APA	Wang, XP.,Zheng, T.,Wu, JG.,Xiao, DQ.,Zhu, JG.,...&Wu, JG .(2015).Characteristics of giant piezoelectricity around the rhombohedral-tetragonal phase boundary in (K,Na) NbO3-based ceramics with different additives.JOURNAL OF MATERIALS CHEMISTRY A,3(31),15951—15961.
MLA	Wang, XP,et al."Characteristics of giant piezoelectricity around the rhombohedral-tetragonal phase boundary in (K,Na) NbO3-based ceramics with different additives".JOURNAL OF MATERIALS CHEMISTRY A 3.31(2015):15951—15961.

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