Optimization on dielectric properties of Y2Ti2O 7 ceramics with Bi2O3-Nd2O 3-Nb2O5 co-doping

Jiayu Ding; Zhefei Wang; Zhijie Gong; Yuan Xiao; Lixi Wang; Qitu Zhang

doi:10.1016/S1002-0721(10)60522-4

Optimization on dielectric properties of Y₂Ti₂O ₇ ceramics with Bi₂O₃-Nd₂O ₃-Nb₂O₅ co-doping

Jiayu Ding, Zhefei Wang, Zhijie Gong, Yuan Xiao, Lixi Wang, Qitu Zhang

College of Materials Science and Engineering

Nanjing Tech University

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

8 Scopus citations

Abstract

The present work aimed to explore a kind of microwave dielectric materials with middle-permittivity, high Qf, near-zero τ_f, and lower sintering temperature. A series of Y₂Ti₂O₇ microwave dielectric ceramics were synthesized by conventional solid-state method. For improving the dielectric properties of Y₂Ti ₂O₇ system, Bi₂O₃, Nd ₂O₃ and Nb₂O₅ were added and their effects on phase composition, microstructure, and dielectric properties at microwave frequencies were investigated by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The queuing score method for multi-target orthogonal design was used to obtain the optimum prescription. The results showed that the Y₂Ti₂O₇ ceramics with 8 wt. Bi₂O₃ and 1 mol. Nd₂O₃-Nb ₂O₅ were well sintered at 1350 °C, exhibiting excellent dielectric characteristics, i.e. ε_r≈76, Qf≈18980 GHz, τ_f=+25.5 ppm/°C.

Original language	English
Pages (from-to)	683-687
Number of pages	5
Journal	Journal of Rare Earths
Volume	29
Issue number	7
DOIs	https://doi.org/10.1016/S1002-0721(10)60522-4
State	Published - Jul 2011

Keywords

dielectric properties
microwave dielectric ceramics
orthogonal design
rare earths

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10.1016/S1002-0721(10)60522-4

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title = "Optimization on dielectric properties of Y2Ti2O 7 ceramics with Bi2O3-Nd2O 3-Nb2O5 co-doping",

abstract = "The present work aimed to explore a kind of microwave dielectric materials with middle-permittivity, high Qf, near-zero τf, and lower sintering temperature. A series of Y2Ti2O7 microwave dielectric ceramics were synthesized by conventional solid-state method. For improving the dielectric properties of Y2Ti 2O7 system, Bi2O3, Nd 2O3 and Nb2O5 were added and their effects on phase composition, microstructure, and dielectric properties at microwave frequencies were investigated by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The queuing score method for multi-target orthogonal design was used to obtain the optimum prescription. The results showed that the Y2Ti2O7 ceramics with 8 wt. Bi2O3 and 1 mol. Nd2O3-Nb 2O5 were well sintered at 1350 °C, exhibiting excellent dielectric characteristics, i.e. εr≈76, Qf≈18980 GHz, τf=+25.5 ppm/°C.",

keywords = "dielectric properties, microwave dielectric ceramics, orthogonal design, rare earths",

author = "Jiayu Ding and Zhefei Wang and Zhijie Gong and Yuan Xiao and Lixi Wang and Qitu Zhang",

year = "2011",

month = jul,

doi = "10.1016/S1002-0721(10)60522-4",

language = "英语",

volume = "29",

pages = "683--687",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Editorial Office of Chinese Rare Earths",

number = "7",

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TY - JOUR

T1 - Optimization on dielectric properties of Y2Ti2O 7 ceramics with Bi2O3-Nd2O 3-Nb2O5 co-doping

AU - Ding, Jiayu

AU - Wang, Zhefei

AU - Gong, Zhijie

AU - Xiao, Yuan

AU - Wang, Lixi

AU - Zhang, Qitu

PY - 2011/7

Y1 - 2011/7

N2 - The present work aimed to explore a kind of microwave dielectric materials with middle-permittivity, high Qf, near-zero τf, and lower sintering temperature. A series of Y2Ti2O7 microwave dielectric ceramics were synthesized by conventional solid-state method. For improving the dielectric properties of Y2Ti 2O7 system, Bi2O3, Nd 2O3 and Nb2O5 were added and their effects on phase composition, microstructure, and dielectric properties at microwave frequencies were investigated by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The queuing score method for multi-target orthogonal design was used to obtain the optimum prescription. The results showed that the Y2Ti2O7 ceramics with 8 wt. Bi2O3 and 1 mol. Nd2O3-Nb 2O5 were well sintered at 1350 °C, exhibiting excellent dielectric characteristics, i.e. εr≈76, Qf≈18980 GHz, τf=+25.5 ppm/°C.

AB - The present work aimed to explore a kind of microwave dielectric materials with middle-permittivity, high Qf, near-zero τf, and lower sintering temperature. A series of Y2Ti2O7 microwave dielectric ceramics were synthesized by conventional solid-state method. For improving the dielectric properties of Y2Ti 2O7 system, Bi2O3, Nd 2O3 and Nb2O5 were added and their effects on phase composition, microstructure, and dielectric properties at microwave frequencies were investigated by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The queuing score method for multi-target orthogonal design was used to obtain the optimum prescription. The results showed that the Y2Ti2O7 ceramics with 8 wt. Bi2O3 and 1 mol. Nd2O3-Nb 2O5 were well sintered at 1350 °C, exhibiting excellent dielectric characteristics, i.e. εr≈76, Qf≈18980 GHz, τf=+25.5 ppm/°C.

KW - dielectric properties

KW - microwave dielectric ceramics

KW - orthogonal design

KW - rare earths

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U2 - 10.1016/S1002-0721(10)60522-4

DO - 10.1016/S1002-0721(10)60522-4

M3 - 文章

AN - SCOPUS:79961043881

SN - 1002-0721

VL - 29

SP - 683

EP - 687

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 7

ER -

Optimization on dielectric properties of Y₂Ti₂O ₇ ceramics with Bi₂O₃-Nd₂O ₃-Nb₂O₅ co-doping

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