Ferroelectric and dielectric properties of Nd2−xCexTi2O7 ceramics

Z.P. Gao; B. Shi; H. Ye; H.X. Yan; M.J. Reece

doi:10.1179/1743676114Y.0000000221

Ferroelectric and dielectric properties of Nd_2−xCe_xTi₂O₇ ceramics

Z.P. Gao, B. Shi, H. Ye, H.X. Yan, M.J. Reece

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

Abstract

The solid solution system Nd_2−xCe_xTi₂O₇ has been investigated. The solubility limit of Ce in Nd_2−xCe_xTi₂O₇ was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd_2−xCe_xTi₂O₇ (x = 0·05, 0·25, 0·5, 0·75) textured ceramics were fabricated using spark plasma sintering. The ferroelectric and dielectric properties of the ceramics were studied. Ce substitution decreases the Curie point T_c of Nd_2−xCe_xTi₂O₇ compounds. The results suggest that the T_c of Ce₂Ti₂O₇ is <1445°C.

Original language	English
Pages (from-to)	191-197
Number of pages	7
Journal	Advances in Applied Ceramics
Volume	114
Issue number	4
Early online date	8 Dec 2014
DOIs	https://doi.org/10.1179/1743676114Y.0000000221
Publication status	Published - 2015

Keywords

perovskite layered structure
ferroelectric
high curie point
texture

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10.1179/1743676114Y.0000000221

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title = "Ferroelectric and dielectric properties of Nd2−xCexTi2O7 ceramics",

abstract = "The solid solution system Nd2−xCexTi2O7 has been investigated. The solubility limit of Ce in Nd2−xCexTi2O7 was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd2−xCexTi2O7 (x = 0·05, 0·25, 0·5, 0·75) textured ceramics were fabricated using spark plasma sintering. The ferroelectric and dielectric properties of the ceramics were studied. Ce substitution decreases the Curie point Tc of Nd2−xCexTi2O7 compounds. The results suggest that the Tc of Ce2Ti2O7 is <1445°C.",

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author = "Z.P. Gao and B. Shi and H. Ye and H.X. Yan and M.J. Reece",

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T1 - Ferroelectric and dielectric properties of Nd2−xCexTi2O7 ceramics

AU - Gao, Z.P.

AU - Shi, B.

AU - Ye, H.

AU - Yan, H.X.

AU - Reece, M.J.

PY - 2015

Y1 - 2015

N2 - The solid solution system Nd2−xCexTi2O7 has been investigated. The solubility limit of Ce in Nd2−xCexTi2O7 was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd2−xCexTi2O7 (x = 0·05, 0·25, 0·5, 0·75) textured ceramics were fabricated using spark plasma sintering. The ferroelectric and dielectric properties of the ceramics were studied. Ce substitution decreases the Curie point Tc of Nd2−xCexTi2O7 compounds. The results suggest that the Tc of Ce2Ti2O7 is <1445°C.

AB - The solid solution system Nd2−xCexTi2O7 has been investigated. The solubility limit of Ce in Nd2−xCexTi2O7 was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd2−xCexTi2O7 (x = 0·05, 0·25, 0·5, 0·75) textured ceramics were fabricated using spark plasma sintering. The ferroelectric and dielectric properties of the ceramics were studied. Ce substitution decreases the Curie point Tc of Nd2−xCexTi2O7 compounds. The results suggest that the Tc of Ce2Ti2O7 is <1445°C.

KW - perovskite layered structure

KW - ferroelectric

KW - high curie point

KW - texture

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U2 - 10.1179/1743676114Y.0000000221

DO - 10.1179/1743676114Y.0000000221

M3 - Article

SN - 1743-6753

VL - 114

SP - 191

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JO - Advances in Applied Ceramics

JF - Advances in Applied Ceramics

IS - 4

ER -

Ferroelectric and dielectric properties of Nd_2−xCe_xTi₂O₇ ceramics

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Keywords

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