Microwave dielectric properties of potassium sodium niobate ceramics with different K/Na ratios

Lu Gao; Wancheng Zhou; Fa Luo; Dongmei Zhu; Zhaoning Yang

doi:10.1016/j.ceramint.2016.09.071

Microwave dielectric properties of potassium sodium niobate ceramics with different K/Na ratios

Lu Gao, Wancheng Zhou, Fa Luo, Dongmei Zhu, Zhaoning Yang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

6 Scopus citations

Abstract

Potassium sodium niobate (K_xNa_1−xNbO₃) ceramics with different K/Na ratios were prepared by traditional solid reaction method and the complex permittivity at 8.2–12.4 GHz was measured in this study. Then the complex permittivity at GHz was compared with that at low frequency (KHz and MHz). And the influences of phase structure and microstructure on the dielectric properties were investigated. A lattice parameter discontinuity at x=0.5 was found and the ceramic with x=0.5 has well faceted and homogeneous grain size distribution compared with others. In addition, the reflection loss of the ceramics was calculated. All the ceramics possess better absorption property at the frequency around 11 GHz, while the effective absorption bandwidth is narrow. The ceramic with x=0 shows the best absorption property because of its relatively low dielectric permittivity.

Original language	English
Pages (from-to)	19105-19109
Number of pages	5
Journal	Ceramics International
Volume	42
Issue number	16
DOIs	https://doi.org/10.1016/j.ceramint.2016.09.071
State	Published - 1 Dec 2016

Keywords

Dielectric property
K/Na ratios
Microwave absorption
Potassium sodium niobate ceramic

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10.1016/j.ceramint.2016.09.071

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title = "Microwave dielectric properties of potassium sodium niobate ceramics with different K/Na ratios",

abstract = "Potassium sodium niobate (KxNa1−xNbO3) ceramics with different K/Na ratios were prepared by traditional solid reaction method and the complex permittivity at 8.2–12.4 GHz was measured in this study. Then the complex permittivity at GHz was compared with that at low frequency (KHz and MHz). And the influences of phase structure and microstructure on the dielectric properties were investigated. A lattice parameter discontinuity at x=0.5 was found and the ceramic with x=0.5 has well faceted and homogeneous grain size distribution compared with others. In addition, the reflection loss of the ceramics was calculated. All the ceramics possess better absorption property at the frequency around 11 GHz, while the effective absorption bandwidth is narrow. The ceramic with x=0 shows the best absorption property because of its relatively low dielectric permittivity.",

keywords = "Dielectric property, K/Na ratios, Microwave absorption, Potassium sodium niobate ceramic",

author = "Lu Gao and Wancheng Zhou and Fa Luo and Dongmei Zhu and Zhaoning Yang",

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doi = "10.1016/j.ceramint.2016.09.071",

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T1 - Microwave dielectric properties of potassium sodium niobate ceramics with different K/Na ratios

AU - Gao, Lu

AU - Zhou, Wancheng

AU - Luo, Fa

AU - Zhu, Dongmei

AU - Yang, Zhaoning

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Potassium sodium niobate (KxNa1−xNbO3) ceramics with different K/Na ratios were prepared by traditional solid reaction method and the complex permittivity at 8.2–12.4 GHz was measured in this study. Then the complex permittivity at GHz was compared with that at low frequency (KHz and MHz). And the influences of phase structure and microstructure on the dielectric properties were investigated. A lattice parameter discontinuity at x=0.5 was found and the ceramic with x=0.5 has well faceted and homogeneous grain size distribution compared with others. In addition, the reflection loss of the ceramics was calculated. All the ceramics possess better absorption property at the frequency around 11 GHz, while the effective absorption bandwidth is narrow. The ceramic with x=0 shows the best absorption property because of its relatively low dielectric permittivity.

AB - Potassium sodium niobate (KxNa1−xNbO3) ceramics with different K/Na ratios were prepared by traditional solid reaction method and the complex permittivity at 8.2–12.4 GHz was measured in this study. Then the complex permittivity at GHz was compared with that at low frequency (KHz and MHz). And the influences of phase structure and microstructure on the dielectric properties were investigated. A lattice parameter discontinuity at x=0.5 was found and the ceramic with x=0.5 has well faceted and homogeneous grain size distribution compared with others. In addition, the reflection loss of the ceramics was calculated. All the ceramics possess better absorption property at the frequency around 11 GHz, while the effective absorption bandwidth is narrow. The ceramic with x=0 shows the best absorption property because of its relatively low dielectric permittivity.

KW - Dielectric property

KW - K/Na ratios

KW - Microwave absorption

KW - Potassium sodium niobate ceramic

UR - https://www.scopus.com/pages/publications/84994479600

U2 - 10.1016/j.ceramint.2016.09.071

DO - 10.1016/j.ceramint.2016.09.071

M3 - 文章

AN - SCOPUS:84994479600

SN - 0272-8842

VL - 42

SP - 19105

EP - 19109

JO - Ceramics International

JF - Ceramics International

IS - 16

ER -

Microwave dielectric properties of potassium sodium niobate ceramics with different K/Na ratios

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Keywords

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