Lead-free piezoelectric K0.5Bi0.5TiO3–Bi(Mg0.5Ti0.5)O3 ceramics with depolarisation temperatures up to ~220 °C

Aurang Zeb; David A Hall; Steven J Milne

doi:10.1007/s10854-015-3777-6

Lead-free piezoelectric K0.5Bi0.5TiO3–Bi(Mg0.5Ti0.5)O3 ceramics with depolarisation temperatures up to ~220 °C

Aurang Zeb, David A Hall, Steven J Milne

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

Abstract

The properties of K0.5Bi0.5TiO3-rich ceramic solid solutions in the system (1 − x)K0.5Bi0.5TiO3–xBi(Mg0.5Ti0.5)O3 are reported. The highest values of piezoelectric charge coefficient, d33, and field-induced strains are found in compositions located close to a compositional boundary between single-phase tetragonal and mixed tetragonal + cubic perovskite phases. Maximum d33 values were ~150 pC/N for x = 0.03, with positive strains of ~0.25 %; the x = 0.04 composition had a d33 ~ 133 pC/N and strain of 0.35 % (bipolar electric field, 50 kV/cm, 1 Hz). Depolarisation temperature Td is an important selection criterion for any lead-free piezoelectric for actuator or sensor applications. A Td of ~220 °C for x = 0.03 is ~100 °C higher than for the widely reported Na0.5Bi0.5TiO3–BaTiO3 system, yet d33 values and strains are similar, suggesting the new material is worthy of further attention as a lead-free piezoceramic for elevated temperature applications.

Original language	English
Pages (from-to)	9516-9521
Number of pages	5
Journal	Journal of Materials Science: Materials in Electronics
Volume	26
DOIs	https://doi.org/10.1007/s10854-015-3777-6
Publication status	Published - Dec 2015

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@article{8e2cb809a69c48bc9b44addf8a43b539,

title = "Lead-free piezoelectric K0.5Bi0.5TiO3–Bi(Mg0.5Ti0.5)O3 ceramics with depolarisation temperatures up to ~220 °C",

abstract = "The properties of K0.5Bi0.5TiO3-rich ceramic solid solutions in the system (1 − x)K0.5Bi0.5TiO3–xBi(Mg0.5Ti0.5)O3 are reported. The highest values of piezoelectric charge coefficient, d33, and field-induced strains are found in compositions located close to a compositional boundary between single-phase tetragonal and mixed tetragonal + cubic perovskite phases. Maximum d33 values were ~150 pC/N for x = 0.03, with positive strains of ~0.25 %; the x = 0.04 composition had a d33 ~ 133 pC/N and strain of 0.35 % (bipolar electric field, 50 kV/cm, 1 Hz). Depolarisation temperature Td is an important selection criterion for any lead-free piezoelectric for actuator or sensor applications. A Td of ~220 °C for x = 0.03 is ~100 °C higher than for the widely reported Na0.5Bi0.5TiO3–BaTiO3 system, yet d33 values and strains are similar, suggesting the new material is worthy of further attention as a lead-free piezoceramic for elevated temperature applications.",

author = "Aurang Zeb and Hall, {David A} and Milne, {Steven J}",

note = "Aurang Zeb wishes to thank the Higher Education Commission of Pakistan and Islamia College Peshawar (Chartered University) for Financial Support. Authors wish to than colleagues me the electroceramics group at Leeds for valuable discussion",

year = "2015",

month = dec,

doi = "10.1007/s10854-015-3777-6",

language = "English",

volume = "26",

pages = "9516--9521",

journal = "Journal of Materials Science: Materials in Electronics",

issn = "0957-4522",

publisher = "Springer Nature",

}

TY - JOUR

T1 - Lead-free piezoelectric K0.5Bi0.5TiO3–Bi(Mg0.5Ti0.5)O3 ceramics with depolarisation temperatures up to ~220 °C

AU - Zeb, Aurang

AU - Hall, David A

AU - Milne, Steven J

N1 - Aurang Zeb wishes to thank the Higher Education Commission of Pakistan and Islamia College Peshawar (Chartered University) for Financial Support. Authors wish to than colleagues me the electroceramics group at Leeds for valuable discussion

PY - 2015/12

Y1 - 2015/12

N2 - The properties of K0.5Bi0.5TiO3-rich ceramic solid solutions in the system (1 − x)K0.5Bi0.5TiO3–xBi(Mg0.5Ti0.5)O3 are reported. The highest values of piezoelectric charge coefficient, d33, and field-induced strains are found in compositions located close to a compositional boundary between single-phase tetragonal and mixed tetragonal + cubic perovskite phases. Maximum d33 values were ~150 pC/N for x = 0.03, with positive strains of ~0.25 %; the x = 0.04 composition had a d33 ~ 133 pC/N and strain of 0.35 % (bipolar electric field, 50 kV/cm, 1 Hz). Depolarisation temperature Td is an important selection criterion for any lead-free piezoelectric for actuator or sensor applications. A Td of ~220 °C for x = 0.03 is ~100 °C higher than for the widely reported Na0.5Bi0.5TiO3–BaTiO3 system, yet d33 values and strains are similar, suggesting the new material is worthy of further attention as a lead-free piezoceramic for elevated temperature applications.

AB - The properties of K0.5Bi0.5TiO3-rich ceramic solid solutions in the system (1 − x)K0.5Bi0.5TiO3–xBi(Mg0.5Ti0.5)O3 are reported. The highest values of piezoelectric charge coefficient, d33, and field-induced strains are found in compositions located close to a compositional boundary between single-phase tetragonal and mixed tetragonal + cubic perovskite phases. Maximum d33 values were ~150 pC/N for x = 0.03, with positive strains of ~0.25 %; the x = 0.04 composition had a d33 ~ 133 pC/N and strain of 0.35 % (bipolar electric field, 50 kV/cm, 1 Hz). Depolarisation temperature Td is an important selection criterion for any lead-free piezoelectric for actuator or sensor applications. A Td of ~220 °C for x = 0.03 is ~100 °C higher than for the widely reported Na0.5Bi0.5TiO3–BaTiO3 system, yet d33 values and strains are similar, suggesting the new material is worthy of further attention as a lead-free piezoceramic for elevated temperature applications.

U2 - 10.1007/s10854-015-3777-6

DO - 10.1007/s10854-015-3777-6

M3 - Article

SN - 0957-4522

VL - 26

SP - 9516

EP - 9521

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

ER -

Lead-free piezoelectric K0.5Bi0.5TiO3–Bi(Mg0.5Ti0.5)O3 ceramics with depolarisation temperatures up to ~220 °C

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