Investigation on transition behavior and electrical properties of (K0.5Na0.5)1-xLixNb0.84Ta0.1Sb0.06O3 around polymorphic phase transition region

Chen Zhu; Wenchao Wang; Jiquan Huang; Fei Tang; Yang Liu; Honglin Shi; Fangyu Wang; Chong Wang; Yongge Cao; Xuanyi Yuan

doi:10.1063/1.4863200

AIP Advances (Jan 2014)

Investigation on transition behavior and electrical properties of (K0.5Na0.5)1-xLixNb0.84Ta0.1Sb0.06O3 around polymorphic phase transition region

Chen Zhu,
Wenchao Wang,
Jiquan Huang,
Fei Tang,
Yang Liu,
Honglin Shi,
Fangyu Wang,
Chong Wang,
Yongge Cao,
Xuanyi Yuan

Affiliations

Chen Zhu: Department of Physics, Renmin University of China, Beijing 100872, P R China
Wenchao Wang: Department of Physics, Renmin University of China, Beijing 100872, P R China
Jiquan Huang: Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
Fei Tang: Department of Physics, Renmin University of China, Beijing 100872, P R China
Yang Liu: School of Chemistry and Environment Engineering, Shaoguan University, Shaoguan 512005, PR China
Honglin Shi: Department of Physics, Renmin University of China, Beijing 100872, P R China
Fangyu Wang: Department of Physics, Renmin University of China, Beijing 100872, P R China
Chong Wang: Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
Yongge Cao: Department of Physics, Renmin University of China, Beijing 100872, P R China
Xuanyi Yuan: Department of Physics, Renmin University of China, Beijing 100872, P R China

DOI: https://doi.org/10.1063/1.4863200
Journal volume & issue: Vol. 4, no. 1
pp. 017125 – 017125-6

Abstract

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(K0.5Na0.5)1-xLixNb0.84Ta0.1Sb0.06O3 (KNLNTS) lead free ceramics with different Li concentration were fabricated by conventional solid-state reaction method. By increasing Li ions in KNLNTS, the grains grow up and the crystal structure changes from orthorhombic to tetragonal. When 0.03 ≤ x ≤ 0.05, the ceramics structure lays in PPT region. Polarization versus electric field (P-E) hysteresis loops at room temperature show good ferroelectric properties and the remnant polarization decreases by increasing Li content while coercive electric keeps almost unchanged. In PPT region, taking x = 0.04 as an example, the sample shows excellent dielectric properties: the dielectric constant is 1159 and loss tangent is 0.04, while the piezoelectric constant d33 is 245 pC/N and kp is 0.44 at room temperature, it is promising for (K0.5Na0.5)1-xLixNb0.84Ta0.1Sb0.06O3 with 4 at. % Li to substitute PZT.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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