Dielectric and electromechanical properties of LiNbO3-modified (BiNa)TiO3-(BaCa)TiO3 lead-free piezoceramics

Arif Zaman; Ali Hussain; Rizwan Ahmed Malik; Adnan Maqbool; Sahn Nahm; Myong Ho Kim

doi:10.1088/0022-3727/49/17/175301

Dielectric and electromechanical properties of LiNbO₃-modified (BiNa)TiO₃-(BaCa)TiO₃ lead-free piezoceramics

Arif Zaman, Ali Hussain, Rizwan Ahmed Malik, Adnan Maqbool, Sahn Nahm, Myong Ho Kim

Department of Materials Science and Engineering

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

35 Citations (Scopus)

Abstract

The dielectric and electromechanical properties of LiNbO₃-modified (1-x) [0.91Na_0.5Bi_0.5TiO₃-0.09Ba_0.70Ca_0.30TiO₃]-xLiNbO₃ (abbreviated as (BiNa)TiO₃-(BaCa)TiO₃-LN) lead-free piezoceramics were investigated. The electrical properties revealed that the addition of LiNbO₃ (LN) induces a phase transition from a non-ergodic relaxor to an ergodic relaxor in the (BiNa)TiO₃-(BaCa)TiO₃-LN system. A large electrostrain of ∼0.418% with a normalized strain of ∼690 pm V^-1 at 6 kV mm^-1 was observed at the coexistence of the non-ergodic relaxor and ergodic relaxor phases for LN 0.020, where a field-assisted reversible phase transition between metastable ferroelectric and stable ergodic relaxor phases occurs. Subsequently, a gradual enhancement in the temperature stability of the dielectric constant was observed. At 3 mol.% LN, a nearly constant temperature and a frequency-invariant permittivity of ϵ_r ∼ 3300 over a broad temperature range of 147 °C-306 °C was observed along with small losses from room temperature up to 400 °C.

Original language	English
Article number	175301
Journal	Journal of Physics D: Applied Physics
Volume	49
Issue number	17
DOIs	https://doi.org/10.1088/0022-3727/49/17/175301
Publication status	Published - 2016 Mar 24

Keywords

ferroelectric
field-induced strain
lead-free piezoelectrics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

Access to Document

10.1088/0022-3727/49/17/175301

Cite this

@article{f4149f4371674fefb6107800629dbb6b,

title = "Dielectric and electromechanical properties of LiNbO3-modified (BiNa)TiO3-(BaCa)TiO3 lead-free piezoceramics",

abstract = "The dielectric and electromechanical properties of LiNbO3-modified (1-x) [0.91Na0.5Bi0.5TiO3-0.09Ba0.70Ca0.30TiO3]-xLiNbO3 (abbreviated as (BiNa)TiO3-(BaCa)TiO3-LN) lead-free piezoceramics were investigated. The electrical properties revealed that the addition of LiNbO3 (LN) induces a phase transition from a non-ergodic relaxor to an ergodic relaxor in the (BiNa)TiO3-(BaCa)TiO3-LN system. A large electrostrain of ∼0.418% with a normalized strain of ∼690 pm V-1 at 6 kV mm-1 was observed at the coexistence of the non-ergodic relaxor and ergodic relaxor phases for LN 0.020, where a field-assisted reversible phase transition between metastable ferroelectric and stable ergodic relaxor phases occurs. Subsequently, a gradual enhancement in the temperature stability of the dielectric constant was observed. At 3 mol.% LN, a nearly constant temperature and a frequency-invariant permittivity of ϵr ∼ 3300 over a broad temperature range of 147 °C-306 °C was observed along with small losses from room temperature up to 400 °C.",

keywords = "ferroelectric, field-induced strain, lead-free piezoelectrics",

author = "Arif Zaman and Ali Hussain and Malik, {Rizwan Ahmed} and Adnan Maqbool and Sahn Nahm and Kim, {Myong Ho}",

note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), as funded by the Ministry of Education, Science and Technology (MEST) (2011-0030058) and the Ministry of Education (MOE) National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (No. 2013H1B8A2032206). A Z also acknowledges Abdul Wali Khan University, Mardan, KPK (Pakistan) for a fellowship. Publisher Copyright: {\textcopyright} 2016 IOP Publishing Ltd.",

year = "2016",

month = mar,

day = "24",

doi = "10.1088/0022-3727/49/17/175301",

language = "English",

volume = "49",

journal = "Journal Physics D: Applied Physics",

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T1 - Dielectric and electromechanical properties of LiNbO3-modified (BiNa)TiO3-(BaCa)TiO3 lead-free piezoceramics

AU - Zaman, Arif

AU - Hussain, Ali

AU - Malik, Rizwan Ahmed

AU - Maqbool, Adnan

AU - Nahm, Sahn

AU - Kim, Myong Ho

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), as funded by the Ministry of Education, Science and Technology (MEST) (2011-0030058) and the Ministry of Education (MOE) National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (No. 2013H1B8A2032206). A Z also acknowledges Abdul Wali Khan University, Mardan, KPK (Pakistan) for a fellowship. Publisher Copyright: © 2016 IOP Publishing Ltd.

PY - 2016/3/24

Y1 - 2016/3/24

N2 - The dielectric and electromechanical properties of LiNbO3-modified (1-x) [0.91Na0.5Bi0.5TiO3-0.09Ba0.70Ca0.30TiO3]-xLiNbO3 (abbreviated as (BiNa)TiO3-(BaCa)TiO3-LN) lead-free piezoceramics were investigated. The electrical properties revealed that the addition of LiNbO3 (LN) induces a phase transition from a non-ergodic relaxor to an ergodic relaxor in the (BiNa)TiO3-(BaCa)TiO3-LN system. A large electrostrain of ∼0.418% with a normalized strain of ∼690 pm V-1 at 6 kV mm-1 was observed at the coexistence of the non-ergodic relaxor and ergodic relaxor phases for LN 0.020, where a field-assisted reversible phase transition between metastable ferroelectric and stable ergodic relaxor phases occurs. Subsequently, a gradual enhancement in the temperature stability of the dielectric constant was observed. At 3 mol.% LN, a nearly constant temperature and a frequency-invariant permittivity of ϵr ∼ 3300 over a broad temperature range of 147 °C-306 °C was observed along with small losses from room temperature up to 400 °C.

AB - The dielectric and electromechanical properties of LiNbO3-modified (1-x) [0.91Na0.5Bi0.5TiO3-0.09Ba0.70Ca0.30TiO3]-xLiNbO3 (abbreviated as (BiNa)TiO3-(BaCa)TiO3-LN) lead-free piezoceramics were investigated. The electrical properties revealed that the addition of LiNbO3 (LN) induces a phase transition from a non-ergodic relaxor to an ergodic relaxor in the (BiNa)TiO3-(BaCa)TiO3-LN system. A large electrostrain of ∼0.418% with a normalized strain of ∼690 pm V-1 at 6 kV mm-1 was observed at the coexistence of the non-ergodic relaxor and ergodic relaxor phases for LN 0.020, where a field-assisted reversible phase transition between metastable ferroelectric and stable ergodic relaxor phases occurs. Subsequently, a gradual enhancement in the temperature stability of the dielectric constant was observed. At 3 mol.% LN, a nearly constant temperature and a frequency-invariant permittivity of ϵr ∼ 3300 over a broad temperature range of 147 °C-306 °C was observed along with small losses from room temperature up to 400 °C.

KW - ferroelectric

KW - field-induced strain

KW - lead-free piezoelectrics

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