The synthesis of lead-free ferroelectric Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3thin films by sol-gel method

T. Yu; Kin Wing Kwok; H. L.W. Chan

doi:10.1016/j.matlet.2006.08.023

The synthesis of lead-free ferroelectric Bi_0.5Na_0.5TiO₃-Bi_0.5K_0.5TiO₃thin films by sol-gel method

T. Yu, Kin Wing Kwok, H. L.W. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

86 Citations (Scopus)

Abstract

(1 - x)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3[BNT-BKT-100x] thin films have been successfully deposited on Pt/Ti/SiO2/Si substrates by a sol-gel process together with rapid thermal annealing. A morphotropic phase boundary (MPB) between Bi0.5Na0.5TiO3and Bi0.5K0.5TiO3was determined around x ∼ 0.15. Near the MPB, the film exhibits the largest grain size, the highest ε value (360) and the largest Prvalue (13.8 μC/cm2). The BNT-BKT thin film system is expected to be a new and promising candidate for lead-free piezoelectric applications.

Original language	English
Pages (from-to)	2117-2120
Number of pages	4
Journal	Materials Letters
Volume	61
Issue number	10
DOIs	https://doi.org/10.1016/j.matlet.2006.08.023
Publication status	Published - 1 Apr 2007

Keywords

Ferroelectric
Lead-free
MPB
Sol-gel process

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

More information

10.1016/j.matlet.2006.08.023

Cite this

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title = "The synthesis of lead-free ferroelectric Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3thin films by sol-gel method",

abstract = "(1 - x)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3[BNT-BKT-100x] thin films have been successfully deposited on Pt/Ti/SiO2/Si substrates by a sol-gel process together with rapid thermal annealing. A morphotropic phase boundary (MPB) between Bi0.5Na0.5TiO3and Bi0.5K0.5TiO3was determined around x ∼ 0.15. Near the MPB, the film exhibits the largest grain size, the highest ε value (360) and the largest Prvalue (13.8 μC/cm2). The BNT-BKT thin film system is expected to be a new and promising candidate for lead-free piezoelectric applications.",

keywords = "Ferroelectric, Lead-free, MPB, Sol-gel process",

author = "T. Yu and Kwok, {Kin Wing} and Chan, {H. L.W.}",

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T1 - The synthesis of lead-free ferroelectric Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3thin films by sol-gel method

AU - Yu, T.

AU - Kwok, Kin Wing

AU - Chan, H. L.W.

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Y1 - 2007/4/1

N2 - (1 - x)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3[BNT-BKT-100x] thin films have been successfully deposited on Pt/Ti/SiO2/Si substrates by a sol-gel process together with rapid thermal annealing. A morphotropic phase boundary (MPB) between Bi0.5Na0.5TiO3and Bi0.5K0.5TiO3was determined around x ∼ 0.15. Near the MPB, the film exhibits the largest grain size, the highest ε value (360) and the largest Prvalue (13.8 μC/cm2). The BNT-BKT thin film system is expected to be a new and promising candidate for lead-free piezoelectric applications.

AB - (1 - x)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3[BNT-BKT-100x] thin films have been successfully deposited on Pt/Ti/SiO2/Si substrates by a sol-gel process together with rapid thermal annealing. A morphotropic phase boundary (MPB) between Bi0.5Na0.5TiO3and Bi0.5K0.5TiO3was determined around x ∼ 0.15. Near the MPB, the film exhibits the largest grain size, the highest ε value (360) and the largest Prvalue (13.8 μC/cm2). The BNT-BKT thin film system is expected to be a new and promising candidate for lead-free piezoelectric applications.

KW - Ferroelectric

KW - Lead-free

KW - MPB

KW - Sol-gel process

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