Orientation dependence of dielectric and piezoelectric properties of (K0.95Li0.05) (Ta0.40Nb0.60) O3 single crystal

Jun Li; Yang Li; Zhongxiang Zhou; Ruyan Guo; Amar S. Bhalla

doi:10.1016/j.ceramint.2015.01.064

Orientation dependence of dielectric and piezoelectric properties of (K_0.95Li_0.05) (Ta_0.40Nb_0.60) O₃ single crystal

Jun Li^*
, Yang Li
, Zhongxiang Zhou
, Ruyan Guo
, Amar S. Bhalla

^*Corresponding author for this work

University of Texas at San Antonio

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

9 Scopus citations

Abstract

(K_0.95Li_0.05) (Ta_0.40Nb_0.60) O₃ (abbreviated as 0.60: KLTN) single crystal has been grown by the top-seeded melt growth method. Dielectric properties in the a- and c-direction have been investigated, and the high anisotropy has been found. ε₁₁=2130, while ε₃₃=371 were determined in the unpoled sample. The piezoelectric constants and electromechanical coupling factors have been determined which are d₁₅=190 pC/N, d₃₁=-140 pC/N, d₃₃=400 pC/N, k₁₅=49.4%, k₃₁=56.2% and k₃₃=75.0%. The crystal orientation dependences of dielectric, piezoelectric and electromechanical coupling properties have been simulated by using the mathematical approach along with phenomenology of the system. These results will be of use for developing high performance lead-free piezoelectric devices.

Original language	English
Pages (from-to)	6657-6662
Number of pages	6
Journal	Ceramics International
Volume	41
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2015.01.064
State	Published - 1 Jun 2015

Keywords

C. Dielectric properties
C. Piezoelectric properties
D. Perovskites

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10.1016/j.ceramint.2015.01.064

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title = "Orientation dependence of dielectric and piezoelectric properties of (K0.95Li0.05) (Ta0.40Nb0.60) O3 single crystal",

abstract = "(K0.95Li0.05) (Ta0.40Nb0.60) O3 (abbreviated as 0.60: KLTN) single crystal has been grown by the top-seeded melt growth method. Dielectric properties in the a- and c-direction have been investigated, and the high anisotropy has been found. ε11=2130, while ε33=371 were determined in the unpoled sample. The piezoelectric constants and electromechanical coupling factors have been determined which are d15=190 pC/N, d31=-140 pC/N, d33=400 pC/N, k15=49.4\%, k31=56.2\% and k33=75.0\%. The crystal orientation dependences of dielectric, piezoelectric and electromechanical coupling properties have been simulated by using the mathematical approach along with phenomenology of the system. These results will be of use for developing high performance lead-free piezoelectric devices.",

keywords = "C. Dielectric properties, C. Piezoelectric properties, D. Perovskites",

author = "Jun Li and Yang Li and Zhongxiang Zhou and Ruyan Guo and Bhalla, \{Amar S.\}",

year = "2015",

month = jun,

day = "1",

doi = "10.1016/j.ceramint.2015.01.064",

language = "英语",

volume = "41",

pages = "6657--6662",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "5",

}

TY - JOUR

T1 - Orientation dependence of dielectric and piezoelectric properties of (K0.95Li0.05) (Ta0.40Nb0.60) O3 single crystal

AU - Li, Jun

AU - Li, Yang

AU - Zhou, Zhongxiang

AU - Guo, Ruyan

AU - Bhalla, Amar S.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - (K0.95Li0.05) (Ta0.40Nb0.60) O3 (abbreviated as 0.60: KLTN) single crystal has been grown by the top-seeded melt growth method. Dielectric properties in the a- and c-direction have been investigated, and the high anisotropy has been found. ε11=2130, while ε33=371 were determined in the unpoled sample. The piezoelectric constants and electromechanical coupling factors have been determined which are d15=190 pC/N, d31=-140 pC/N, d33=400 pC/N, k15=49.4%, k31=56.2% and k33=75.0%. The crystal orientation dependences of dielectric, piezoelectric and electromechanical coupling properties have been simulated by using the mathematical approach along with phenomenology of the system. These results will be of use for developing high performance lead-free piezoelectric devices.

AB - (K0.95Li0.05) (Ta0.40Nb0.60) O3 (abbreviated as 0.60: KLTN) single crystal has been grown by the top-seeded melt growth method. Dielectric properties in the a- and c-direction have been investigated, and the high anisotropy has been found. ε11=2130, while ε33=371 were determined in the unpoled sample. The piezoelectric constants and electromechanical coupling factors have been determined which are d15=190 pC/N, d31=-140 pC/N, d33=400 pC/N, k15=49.4%, k31=56.2% and k33=75.0%. The crystal orientation dependences of dielectric, piezoelectric and electromechanical coupling properties have been simulated by using the mathematical approach along with phenomenology of the system. These results will be of use for developing high performance lead-free piezoelectric devices.

KW - C. Dielectric properties

KW - C. Piezoelectric properties

KW - D. Perovskites

UR - https://www.scopus.com/pages/publications/84925351633

U2 - 10.1016/j.ceramint.2015.01.064

DO - 10.1016/j.ceramint.2015.01.064

M3 - 文章

AN - SCOPUS:84925351633

SN - 0272-8842

VL - 41

SP - 6657

EP - 6662

JO - Ceramics International

JF - Ceramics International

IS - 5

ER -

Orientation dependence of dielectric and piezoelectric properties of (K_0.95Li_0.05) (Ta_0.40Nb_0.60) O₃ single crystal

Abstract

Keywords

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