Microwave dielectric properties and vibrational spectra of (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics with scheelite structures

Lixia Pang; Xiaolong Wang; Di Zhou; Zhen Fang; Xingyu Tian; Weiguo Liu; Zeming Qi; Song Xia; Moustafa Adel Darwish

doi:10.1016/j.jeurceramsoc.2022.05.074

Microwave dielectric properties and vibrational spectra of (Na_0.5xLa_1–0.5x)(Nb_1−xMo_x)O₄ ceramics with scheelite structures

Lixia Pang
, Xiaolong Wang
, Di Zhou
, Zhen Fang
, Xingyu Tian
, Weiguo Liu
, Zeming Qi
, Song Xia
, Moustafa Adel Darwish

Faculty of Electronic and Information Engineering

Xi'an Technological University
University of Science and Technology of China
Xi'an Jiaotong University
Tanta University

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

18 Scopus citations

Abstract

In this study, (Na_0.5xLa_1–0.5x)(Nb_1−xMo_x)O₄ (0.0 ≤ x ≤ 1.0) ceramics were synthesized by the traditional solid-state reaction method. All the (Na_0.5xLa_1–0.5x)(Nb_1−xMo_x)O₄ samples could be densified well at 1120–1200 °C. Solid solutions with tetragonal scheelite structures were obtained in the (Na_0.5xLa_1–0.5x)(Nb_1−xMo_x)O₄ ceramics when 0.4 ≤ x < 1.0. A temperature-stable microwave dielectric ceramic with a near-zero temperature coefficient of resonant frequency (TCF) of approximately –2.4 ppm/°C was obtained for the (Na_0.25La_0.75)(Nb_0.5Mo_0.5)O₄ sample, along with a high Q×f value of approximately 45,600 GHz and a low permittivity of approximately 14.5. Introducing the fergusonite phase into the scheelite phase proved effective in obtaining a near-zero TCF.

Original language	English
Pages (from-to)	5726-5730
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	42
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2022.05.074
State	Published - Oct 2022

Keywords

Microwave dielectric ceramic
Scheelite structure
Vibrational spectra

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10.1016/j.jeurceramsoc.2022.05.074

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@article{784c78a2d6074fe582468b8238406756,

title = "Microwave dielectric properties and vibrational spectra of (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics with scheelite structures",

abstract = "In this study, (Na0.5xLa1–0.5x)(Nb1−xMox)O4 (0.0 ≤ x ≤ 1.0) ceramics were synthesized by the traditional solid-state reaction method. All the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 samples could be densified well at 1120–1200 °C. Solid solutions with tetragonal scheelite structures were obtained in the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics when 0.4 ≤ x < 1.0. A temperature-stable microwave dielectric ceramic with a near-zero temperature coefficient of resonant frequency (TCF) of approximately –2.4 ppm/°C was obtained for the (Na0.25La0.75)(Nb0.5Mo0.5)O4 sample, along with a high Q×f value of approximately 45,600 GHz and a low permittivity of approximately 14.5. Introducing the fergusonite phase into the scheelite phase proved effective in obtaining a near-zero TCF.",

keywords = "Microwave dielectric ceramic, Scheelite structure, Vibrational spectra",

author = "Lixia Pang and Xiaolong Wang and Di Zhou and Zhen Fang and Xingyu Tian and Weiguo Liu and Zeming Qi and Song Xia and Darwish, \{Moustafa Adel\}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = oct,

doi = "10.1016/j.jeurceramsoc.2022.05.074",

language = "英语",

volume = "42",

pages = "5726--5730",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Microwave dielectric properties and vibrational spectra of (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics with scheelite structures

AU - Pang, Lixia

AU - Wang, Xiaolong

AU - Zhou, Di

AU - Fang, Zhen

AU - Tian, Xingyu

AU - Liu, Weiguo

AU - Qi, Zeming

AU - Xia, Song

AU - Darwish, Moustafa Adel

PY - 2022/10

Y1 - 2022/10

N2 - In this study, (Na0.5xLa1–0.5x)(Nb1−xMox)O4 (0.0 ≤ x ≤ 1.0) ceramics were synthesized by the traditional solid-state reaction method. All the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 samples could be densified well at 1120–1200 °C. Solid solutions with tetragonal scheelite structures were obtained in the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics when 0.4 ≤ x < 1.0. A temperature-stable microwave dielectric ceramic with a near-zero temperature coefficient of resonant frequency (TCF) of approximately –2.4 ppm/°C was obtained for the (Na0.25La0.75)(Nb0.5Mo0.5)O4 sample, along with a high Q×f value of approximately 45,600 GHz and a low permittivity of approximately 14.5. Introducing the fergusonite phase into the scheelite phase proved effective in obtaining a near-zero TCF.

AB - In this study, (Na0.5xLa1–0.5x)(Nb1−xMox)O4 (0.0 ≤ x ≤ 1.0) ceramics were synthesized by the traditional solid-state reaction method. All the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 samples could be densified well at 1120–1200 °C. Solid solutions with tetragonal scheelite structures were obtained in the (Na0.5xLa1–0.5x)(Nb1−xMox)O4 ceramics when 0.4 ≤ x < 1.0. A temperature-stable microwave dielectric ceramic with a near-zero temperature coefficient of resonant frequency (TCF) of approximately –2.4 ppm/°C was obtained for the (Na0.25La0.75)(Nb0.5Mo0.5)O4 sample, along with a high Q×f value of approximately 45,600 GHz and a low permittivity of approximately 14.5. Introducing the fergusonite phase into the scheelite phase proved effective in obtaining a near-zero TCF.

KW - Microwave dielectric ceramic

KW - Scheelite structure

KW - Vibrational spectra

UR - https://www.scopus.com/pages/publications/85132241847

U2 - 10.1016/j.jeurceramsoc.2022.05.074

DO - 10.1016/j.jeurceramsoc.2022.05.074

M3 - 文章

AN - SCOPUS:85132241847

SN - 0955-2219

VL - 42

SP - 5726

EP - 5730

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 13

ER -

Microwave dielectric properties and vibrational spectra of (Na_0.5xLa_1–0.5x)(Nb_1−xMo_x)O₄ ceramics with scheelite structures

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