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Title: Phase transition sequence in Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93} Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} ceramic with large piezoelectric response

Abstract

The piezoceramic 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93}Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} (KNLNS{sub 0.07}-BZ), which shows large piezoelectric response (d{sub 33} ≈ 425 pC/N), has been considered as one of the promising Pb-free substitutions for Pb(Zr,Ti)O{sub 3}. In this paper, we investigate the phase transition sequence for KNLNS{sub 0.07}-BZ by employing the dielectric measurement, mechanical spectroscopy, as well as Raman spectroscopy. Two ferroelectric-ferroelectric transitions have been detected by inspecting anomalies in the spectra, indicating the existence of three ferroelectric phases. Moreover, in-situ X-ray diffraction study has been further performed on KNLNS{sub 0.07}-BZ to identify the crystal structure for each phase. The result reveals that the phase sequence for KNLNS{sub 0.07}-BZ evolves from tetragonal (T) to rhombohedral (R) via an intermediate orthorhombic (O) phase. And the piezoelectric-optimal region for KNLNS{sub 0.07}-BZ locates on a T-O boundary rather than the previously reported T-R boundary. Strong piezoelectricity may stem from the easier polarization rotation on the T-O boundary with reduced polarization anisotropy.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ;  [1]
  1. State Key Laboratory of Electrical Insulation and Power Equipment and Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049 (China)
Publication Date:
OSTI Identifier:
22486348
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CERAMICS; FERROELECTRIC MATERIALS; LITHIUM 5; ORTHORHOMBIC LATTICES; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; POLARIZATION; RAMAN SPECTROSCOPY; SPECTRA; TRIGONAL LATTICES; X-RAY DIFFRACTION

Citation Formats

Gao, Jinghui, Zhang, Le, Zhang, Ming, Dai, Ye, Hu, Xinghao, Wang, Dong, Zhong, Lisheng, Li, Shengtao, Ren, Shuai, Hao, Yanshuang, Fang, Minxia, Ren, Xiaobing, and Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047 Ibaraki. Phase transition sequence in Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93} Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} ceramic with large piezoelectric response. United States: N. p., 2015. Web. doi:10.1063/1.4926874.
Gao, Jinghui, Zhang, Le, Zhang, Ming, Dai, Ye, Hu, Xinghao, Wang, Dong, Zhong, Lisheng, Li, Shengtao, Ren, Shuai, Hao, Yanshuang, Fang, Minxia, Ren, Xiaobing, & Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047 Ibaraki. Phase transition sequence in Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93} Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} ceramic with large piezoelectric response. United States. https://doi.org/10.1063/1.4926874
Gao, Jinghui, Zhang, Le, Zhang, Ming, Dai, Ye, Hu, Xinghao, Wang, Dong, Zhong, Lisheng, Li, Shengtao, Ren, Shuai, Hao, Yanshuang, Fang, Minxia, Ren, Xiaobing, and Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047 Ibaraki. 2015. "Phase transition sequence in Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93} Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} ceramic with large piezoelectric response". United States. https://doi.org/10.1063/1.4926874.
@article{osti_22486348,
title = {Phase transition sequence in Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93} Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} ceramic with large piezoelectric response},
author = {Gao, Jinghui and Zhang, Le and Zhang, Ming and Dai, Ye and Hu, Xinghao and Wang, Dong and Zhong, Lisheng and Li, Shengtao and Ren, Shuai and Hao, Yanshuang and Fang, Minxia and Ren, Xiaobing and Ferroic Physics Group, National Institute for Materials Science, Tsukuba, 305-0047 Ibaraki},
abstractNote = {The piezoceramic 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93}Sb{sub 0.07}O{sub 3}−0.04BaZrO{sub 3} (KNLNS{sub 0.07}-BZ), which shows large piezoelectric response (d{sub 33} ≈ 425 pC/N), has been considered as one of the promising Pb-free substitutions for Pb(Zr,Ti)O{sub 3}. In this paper, we investigate the phase transition sequence for KNLNS{sub 0.07}-BZ by employing the dielectric measurement, mechanical spectroscopy, as well as Raman spectroscopy. Two ferroelectric-ferroelectric transitions have been detected by inspecting anomalies in the spectra, indicating the existence of three ferroelectric phases. Moreover, in-situ X-ray diffraction study has been further performed on KNLNS{sub 0.07}-BZ to identify the crystal structure for each phase. The result reveals that the phase sequence for KNLNS{sub 0.07}-BZ evolves from tetragonal (T) to rhombohedral (R) via an intermediate orthorhombic (O) phase. And the piezoelectric-optimal region for KNLNS{sub 0.07}-BZ locates on a T-O boundary rather than the previously reported T-R boundary. Strong piezoelectricity may stem from the easier polarization rotation on the T-O boundary with reduced polarization anisotropy.},
doi = {10.1063/1.4926874},
url = {https://www.osti.gov/biblio/22486348}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 3,
volume = 107,
place = {United States},
year = {Mon Jul 20 00:00:00 EDT 2015},
month = {Mon Jul 20 00:00:00 EDT 2015}
}