Structure, chemical bond and microwave dielectric characteristics of novel Li3Mg4NbO8 ceramics

Guoguang Yao; Jiaxin Yan; Jingjing Tan; Cuijin Pei; Peng Liu; Huaiwu Zhang; Dawei Wang

doi:10.1016/j.jeurceramsoc.2021.06.029

Structure, chemical bond and microwave dielectric characteristics of novel Li₃Mg₄NbO₈ ceramics

Guoguang Yao^*
, Jiaxin Yan
, Jingjing Tan
, Cuijin Pei
, Peng Liu
, Huaiwu Zhang
, Dawei Wang

^*Corresponding author for this work

Xi'an Institute of Posts and Telecommunications
Shaanxi Normal University
University of Electronic Science and Technology of China
Shenzhen Institute of Advanced Technology

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

68 Scopus citations

Abstract

A novel Li₃Mg₄NbO₈ compound was fabricated through the process of solid-state reaction. The crystal structure, sinterability and microwave dielectric properties of the Li₃Mg₄NbO₈ ceramics were investigated. XRD refinement and Raman spectra results ascertained that the Li₃Mg₄NbO₈ compound crystallized into an orthorhombic Li₃Mg₂NbO₆-like structure with space group Fddd. The ε_r value was strongly impacted by the relative density and average ionic polarization. The Q × f value was mainly affected by the relative density and average grain size. The Li₃Mg₄NbO₈ ceramics sintered at 1150 ℃ showed outstanding microwave dielectric performance: ε_r = 13.8 ± 0.14, Q × f = 103 400 ± 3500 GHz (at 9.6 GHz), τ_f = −36.0 ± 1 ppm/℃. Additionally, the bond characteristics were calculated for a better understanding of the structure-property correlation for Li₃Mg₄NbO₈ ceramics.

Original language	English
Pages (from-to)	6490-6494
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	41
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2021.06.029
State	Published - Oct 2021
Externally published	Yes

Keywords

LiMgNbO ceramics
Microwave dielectric properties
Orthorhombic structure

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10.1016/j.jeurceramsoc.2021.06.029

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@article{df6b57f5e5a94e619950c5eb642cb0e0,

title = "Structure, chemical bond and microwave dielectric characteristics of novel Li3Mg4NbO8 ceramics",

abstract = "A novel Li3Mg4NbO8 compound was fabricated through the process of solid-state reaction. The crystal structure, sinterability and microwave dielectric properties of the Li3Mg4NbO8 ceramics were investigated. XRD refinement and Raman spectra results ascertained that the Li3Mg4NbO8 compound crystallized into an orthorhombic Li3Mg2NbO6-like structure with space group Fddd. The εr value was strongly impacted by the relative density and average ionic polarization. The Q × f value was mainly affected by the relative density and average grain size. The Li3Mg4NbO8 ceramics sintered at 1150 ℃ showed outstanding microwave dielectric performance: εr = 13.8 ± 0.14, Q × f = 103 400 ± 3500 GHz (at 9.6 GHz), τf = −36.0 ± 1 ppm/℃. Additionally, the bond characteristics were calculated for a better understanding of the structure-property correlation for Li3Mg4NbO8 ceramics.",

keywords = "LiMgNbO ceramics, Microwave dielectric properties, Orthorhombic structure",

author = "Guoguang Yao and Jiaxin Yan and Jingjing Tan and Cuijin Pei and Peng Liu and Huaiwu Zhang and Dawei Wang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = oct,

doi = "10.1016/j.jeurceramsoc.2021.06.029",

language = "英语",

volume = "41",

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TY - JOUR

T1 - Structure, chemical bond and microwave dielectric characteristics of novel Li3Mg4NbO8 ceramics

AU - Yao, Guoguang

AU - Yan, Jiaxin

AU - Tan, Jingjing

AU - Pei, Cuijin

AU - Liu, Peng

AU - Zhang, Huaiwu

AU - Wang, Dawei

PY - 2021/10

Y1 - 2021/10

N2 - A novel Li3Mg4NbO8 compound was fabricated through the process of solid-state reaction. The crystal structure, sinterability and microwave dielectric properties of the Li3Mg4NbO8 ceramics were investigated. XRD refinement and Raman spectra results ascertained that the Li3Mg4NbO8 compound crystallized into an orthorhombic Li3Mg2NbO6-like structure with space group Fddd. The εr value was strongly impacted by the relative density and average ionic polarization. The Q × f value was mainly affected by the relative density and average grain size. The Li3Mg4NbO8 ceramics sintered at 1150 ℃ showed outstanding microwave dielectric performance: εr = 13.8 ± 0.14, Q × f = 103 400 ± 3500 GHz (at 9.6 GHz), τf = −36.0 ± 1 ppm/℃. Additionally, the bond characteristics were calculated for a better understanding of the structure-property correlation for Li3Mg4NbO8 ceramics.

AB - A novel Li3Mg4NbO8 compound was fabricated through the process of solid-state reaction. The crystal structure, sinterability and microwave dielectric properties of the Li3Mg4NbO8 ceramics were investigated. XRD refinement and Raman spectra results ascertained that the Li3Mg4NbO8 compound crystallized into an orthorhombic Li3Mg2NbO6-like structure with space group Fddd. The εr value was strongly impacted by the relative density and average ionic polarization. The Q × f value was mainly affected by the relative density and average grain size. The Li3Mg4NbO8 ceramics sintered at 1150 ℃ showed outstanding microwave dielectric performance: εr = 13.8 ± 0.14, Q × f = 103 400 ± 3500 GHz (at 9.6 GHz), τf = −36.0 ± 1 ppm/℃. Additionally, the bond characteristics were calculated for a better understanding of the structure-property correlation for Li3Mg4NbO8 ceramics.

KW - LiMgNbO ceramics

KW - Microwave dielectric properties

KW - Orthorhombic structure

UR - https://www.scopus.com/pages/publications/85108850191

U2 - 10.1016/j.jeurceramsoc.2021.06.029

DO - 10.1016/j.jeurceramsoc.2021.06.029

M3 - 文章

AN - SCOPUS:85108850191

SN - 0955-2219

VL - 41

SP - 6490

EP - 6494

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 13

ER -

Structure, chemical bond and microwave dielectric characteristics of novel Li₃Mg₄NbO₈ ceramics

Abstract

Keywords

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