Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics

Z.P. Gao; H.X. Yan; H.P. Ning; R. Wilson; X.Y. Wei; B. Shi; H. Ye; M.J. Reece

doi:10.1016/j.jeurceramsoc.2012.11.015

Piezoelectric and dielectric properties of Ce substituted La₂Ti₂O₇ ceramics

Z.P. Gao, H.X. Yan, H.P. Ning, R. Wilson, X.Y. Wei, B. Shi, H. Ye, M.J. Reece

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

Abstract

The ferroelectric and dielectric properties of cerium (Ce) substituted La₂Ti₂O₇ (LTO) have been investigated. Single phase, dense La_2-xCe_xTi₂O₇ (x=0.15, 0.25, 0.35) ceramics were prepared by spark plasma sintering. The solubility limit of Ce in La_2-xCe_xTi₂O₇ was found to be between 0.35 and 0.5. The a-, b- and c-axes of the unit cell decrease with increasing Ce substitution. The Curie point (Tc) of La_2-xCe_xTi₂O₇ (x=0, 0.15, 0.25, 0.35) decreases and dielectric constant and loss increase with increasing Ce substitution. Cerium can increase the d₃₃ of La₂Ti₂O₇. The highest d₃₃ was 3.9±0.1pC/N for La_1.85Ce_0.15Ti₂O₇ textured ceramic.

Original language	English
Pages (from-to)	1001-1008
Number of pages	8
Journal	Journal of the European Ceramic Society
Volume	33
Issue number	5
Early online date	13 Dec 2012
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2012.11.015
Publication status	Published - May 2013

Keywords

curie point
ferroelectric
PLS ceramic
SPS

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10.1016/j.jeurceramsoc.2012.11.015

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title = "Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics",

abstract = "The ferroelectric and dielectric properties of cerium (Ce) substituted La2Ti2O7 (LTO) have been investigated. Single phase, dense La2-xCexTi2O7 (x=0.15, 0.25, 0.35) ceramics were prepared by spark plasma sintering. The solubility limit of Ce in La2-xCexTi2O7 was found to be between 0.35 and 0.5. The a-, b- and c-axes of the unit cell decrease with increasing Ce substitution. The Curie point (Tc) of La2-xCexTi2O7 (x=0, 0.15, 0.25, 0.35) decreases and dielectric constant and loss increase with increasing Ce substitution. Cerium can increase the d33 of La2Ti2O7. The highest d33 was 3.9±0.1pC/N for La1.85Ce0.15Ti2O7 textured ceramic.",

keywords = "curie point, ferroelectric, PLS ceramic, SPS",

author = "Z.P. Gao and H.X. Yan and H.P. Ning and R. Wilson and X.Y. Wei and B. Shi and H. Ye and M.J. Reece",

year = "2013",

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doi = "10.1016/j.jeurceramsoc.2012.11.015",

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T1 - Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics

AU - Gao, Z.P.

AU - Yan, H.X.

AU - Ning, H.P.

AU - Wilson, R.

AU - Wei, X.Y.

AU - Shi, B.

AU - Ye, H.

AU - Reece, M.J.

PY - 2013/5

Y1 - 2013/5

N2 - The ferroelectric and dielectric properties of cerium (Ce) substituted La2Ti2O7 (LTO) have been investigated. Single phase, dense La2-xCexTi2O7 (x=0.15, 0.25, 0.35) ceramics were prepared by spark plasma sintering. The solubility limit of Ce in La2-xCexTi2O7 was found to be between 0.35 and 0.5. The a-, b- and c-axes of the unit cell decrease with increasing Ce substitution. The Curie point (Tc) of La2-xCexTi2O7 (x=0, 0.15, 0.25, 0.35) decreases and dielectric constant and loss increase with increasing Ce substitution. Cerium can increase the d33 of La2Ti2O7. The highest d33 was 3.9±0.1pC/N for La1.85Ce0.15Ti2O7 textured ceramic.

AB - The ferroelectric and dielectric properties of cerium (Ce) substituted La2Ti2O7 (LTO) have been investigated. Single phase, dense La2-xCexTi2O7 (x=0.15, 0.25, 0.35) ceramics were prepared by spark plasma sintering. The solubility limit of Ce in La2-xCexTi2O7 was found to be between 0.35 and 0.5. The a-, b- and c-axes of the unit cell decrease with increasing Ce substitution. The Curie point (Tc) of La2-xCexTi2O7 (x=0, 0.15, 0.25, 0.35) decreases and dielectric constant and loss increase with increasing Ce substitution. Cerium can increase the d33 of La2Ti2O7. The highest d33 was 3.9±0.1pC/N for La1.85Ce0.15Ti2O7 textured ceramic.

KW - curie point

KW - ferroelectric

KW - PLS ceramic

KW - SPS

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 5

ER -

Piezoelectric and dielectric properties of Ce substituted La₂Ti₂O₇ ceramics

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Keywords

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