Enhanced piezoelectric properties of Fe2O3-2TiO 2 codoped Li0.05(Na0.5K0.5)0. 95(Nb0.975Sb0.025)O3 lead-free ceramics with uniform microstructure

Yongjie Zhao; Yuzhen Zhao; Rongxia Huang; Rongzheng Liu; Heping Zhou

doi:10.1016/j.matchemphys.2011.09.070

Enhanced piezoelectric properties of Fe₂O₃-2TiO ₂ codoped Li_0.05(Na_0.5K_0.5)0. 95(Nb_0.975Sb_0.025)O₃ lead-free ceramics with uniform microstructure

Yongjie Zhao^*
, Yuzhen Zhao^*
, Rongxia Huang
, Rongzheng Liu
, Heping Zhou

^*Corresponding author for this work

Tsinghua University

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

9 Citations (Scopus)

Abstract

In this study, Fe₂O₃ and TiO₂ codoped Li_0.05(Na_0.5K_0.5)0.95(Nb_0.975Sb _0.025)O₃[(1-x) Li_0.05(Na_0.5K _0.5)0.95 (Nb_0.975Sb_0.025)O₃- x(Fe₂O₃-2TiO₂) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe₂O₃-2TiO₂ content. The grain size distribution of non-doped Li_0.05(Na_0.5K _0.5)0.95(Nb_0.975Sb_0.025)O₃ ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe₂O ₃-2TiO₂ content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.

Original language	English
Pages (from-to)	32-36
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	131
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2011.09.070
Publication status	Published - 15 Dec 2011
Externally published	Yes

Keywords

Enhanced property
Lead-free piezoelectrics
Uniform microstructure

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10.1016/j.matchemphys.2011.09.070

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@article{9d4e3ee359f048afa5c453ece50fc781,

title = "Enhanced piezoelectric properties of Fe2O3-2TiO 2 codoped Li0.05(Na0.5K0.5)0. 95(Nb0.975Sb0.025)O3 lead-free ceramics with uniform microstructure",

abstract = "In this study, Fe2O3 and TiO2 codoped Li0.05(Na0.5K0.5)0.95(Nb0.975Sb 0.025)O3[(1-x) Li0.05(Na0.5K 0.5)0.95 (Nb0.975Sb0.025)O3- x(Fe2O3-2TiO2) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe2O3-2TiO2 content. The grain size distribution of non-doped Li0.05(Na0.5K 0.5)0.95(Nb0.975Sb0.025)O3 ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe2O 3-2TiO2 content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.",

keywords = "Enhanced property, Lead-free piezoelectrics, Uniform microstructure",

author = "Yongjie Zhao and Yuzhen Zhao and Rongxia Huang and Rongzheng Liu and Heping Zhou",

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T1 - Enhanced piezoelectric properties of Fe2O3-2TiO 2 codoped Li0.05(Na0.5K0.5)0. 95(Nb0.975Sb0.025)O3 lead-free ceramics with uniform microstructure

AU - Zhao, Yongjie

AU - Zhao, Yuzhen

AU - Huang, Rongxia

AU - Liu, Rongzheng

AU - Zhou, Heping

PY - 2011/12/15

Y1 - 2011/12/15

N2 - In this study, Fe2O3 and TiO2 codoped Li0.05(Na0.5K0.5)0.95(Nb0.975Sb 0.025)O3[(1-x) Li0.05(Na0.5K 0.5)0.95 (Nb0.975Sb0.025)O3- x(Fe2O3-2TiO2) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe2O3-2TiO2 content. The grain size distribution of non-doped Li0.05(Na0.5K 0.5)0.95(Nb0.975Sb0.025)O3 ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe2O 3-2TiO2 content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.

AB - In this study, Fe2O3 and TiO2 codoped Li0.05(Na0.5K0.5)0.95(Nb0.975Sb 0.025)O3[(1-x) Li0.05(Na0.5K 0.5)0.95 (Nb0.975Sb0.025)O3- x(Fe2O3-2TiO2) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe2O3-2TiO2 content. The grain size distribution of non-doped Li0.05(Na0.5K 0.5)0.95(Nb0.975Sb0.025)O3 ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe2O 3-2TiO2 content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.

KW - Enhanced property

KW - Lead-free piezoelectrics

KW - Uniform microstructure

UR - https://www.scopus.com/pages/publications/84865733300

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DO - 10.1016/j.matchemphys.2011.09.070

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JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Enhanced piezoelectric properties of Fe₂O₃-2TiO ₂ codoped Li_0.05(Na_0.5K_0.5)0. 95(Nb_0.975Sb_0.025)O₃ lead-free ceramics with uniform microstructure

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