Low loss (Ba1−xSrx)(Co1/3Nb2/3)O3 solid solution: phase evolution, microstructure and microwave dielectric properties

Zhefei Wang; Baoyu Huang; Lixi Wang; Zhenxiao Fu; Qitu Zhang

doi:10.1007/s10854-015-2978-3

Low loss (Ba_1−xSr_x)(Co_1/3Nb_2/3)O₃ solid solution: phase evolution, microstructure and microwave dielectric properties

Zhefei Wang, Baoyu Huang, Lixi Wang, Zhenxiao Fu, Qitu Zhang

College of Materials Science and Engineering

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

15 Scopus citations

Abstract

(Ba_1−xSr_x)(Co_1/3Nb_2/3)O₃ (0 ≤ x ≤ 0.5) microwave dielectric ceramics had been prepared using the solid-state reaction method. The dense microstructures with small grains were obtained. All Sr²⁺ substituted samples exhibited the perovskite phase. The structure transition from cubic to hexagonal occurred with the increase of x, which led to higher degree of 1:2 ordered structure in the B site. The improved Q × f value was correlated monotonously with the ordering parameters S. The dielectric constant (ε_r) and the temperature coefficient of resonant frequency (τ_f) could be effectively tuned by tailoring x. A good combination of microwave dielectric properties was obtained for (Ba_0.95Sr_0.05)(Co_1/3Nb_2/3)O₃ sintered at 1380 °C: ε_r = 33.3, Q × f = 87,120 GHz, τ_f = 4 ppm/°C.

Original language	English
Pages (from-to)	4273-4279
Number of pages	7
Journal	Journal of Materials Science: Materials in Electronics
Volume	26
Issue number	6
DOIs	https://doi.org/10.1007/s10854-015-2978-3
State	Published - 1 Jun 2015

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title = "Low loss (Ba1−xSrx)(Co1/3Nb2/3)O3 solid solution: phase evolution, microstructure and microwave dielectric properties",

abstract = "(Ba1−xSrx)(Co1/3Nb2/3)O3 (0 ≤ x ≤ 0.5) microwave dielectric ceramics had been prepared using the solid-state reaction method. The dense microstructures with small grains were obtained. All Sr2+ substituted samples exhibited the perovskite phase. The structure transition from cubic to hexagonal occurred with the increase of x, which led to higher degree of 1:2 ordered structure in the B site. The improved Q × f value was correlated monotonously with the ordering parameters S. The dielectric constant (εr) and the temperature coefficient of resonant frequency (τf) could be effectively tuned by tailoring x. A good combination of microwave dielectric properties was obtained for (Ba0.95Sr0.05)(Co1/3Nb2/3)O3 sintered at 1380 °C: εr = 33.3, Q × f = 87,120 GHz, τf = 4 ppm/°C.",

author = "Zhefei Wang and Baoyu Huang and Lixi Wang and Zhenxiao Fu and Qitu Zhang",

note = "Publisher Copyright: {\textcopyright} 2015, Springer Science+Business Media New York.",

year = "2015",

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doi = "10.1007/s10854-015-2978-3",

language = "英语",

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TY - JOUR

T1 - Low loss (Ba1−xSrx)(Co1/3Nb2/3)O3 solid solution

T2 - phase evolution, microstructure and microwave dielectric properties

AU - Wang, Zhefei

AU - Huang, Baoyu

AU - Wang, Lixi

AU - Fu, Zhenxiao

AU - Zhang, Qitu

PY - 2015/6/1

Y1 - 2015/6/1

N2 - (Ba1−xSrx)(Co1/3Nb2/3)O3 (0 ≤ x ≤ 0.5) microwave dielectric ceramics had been prepared using the solid-state reaction method. The dense microstructures with small grains were obtained. All Sr2+ substituted samples exhibited the perovskite phase. The structure transition from cubic to hexagonal occurred with the increase of x, which led to higher degree of 1:2 ordered structure in the B site. The improved Q × f value was correlated monotonously with the ordering parameters S. The dielectric constant (εr) and the temperature coefficient of resonant frequency (τf) could be effectively tuned by tailoring x. A good combination of microwave dielectric properties was obtained for (Ba0.95Sr0.05)(Co1/3Nb2/3)O3 sintered at 1380 °C: εr = 33.3, Q × f = 87,120 GHz, τf = 4 ppm/°C.

AB - (Ba1−xSrx)(Co1/3Nb2/3)O3 (0 ≤ x ≤ 0.5) microwave dielectric ceramics had been prepared using the solid-state reaction method. The dense microstructures with small grains were obtained. All Sr2+ substituted samples exhibited the perovskite phase. The structure transition from cubic to hexagonal occurred with the increase of x, which led to higher degree of 1:2 ordered structure in the B site. The improved Q × f value was correlated monotonously with the ordering parameters S. The dielectric constant (εr) and the temperature coefficient of resonant frequency (τf) could be effectively tuned by tailoring x. A good combination of microwave dielectric properties was obtained for (Ba0.95Sr0.05)(Co1/3Nb2/3)O3 sintered at 1380 °C: εr = 33.3, Q × f = 87,120 GHz, τf = 4 ppm/°C.

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SN - 0957-4522

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SP - 4273

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JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 6

ER -

Low loss (Ba_1−xSr_x)(Co_1/3Nb_2/3)O₃ solid solution: phase evolution, microstructure and microwave dielectric properties

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