Crystal structure, infrared spectra and microwave dielectric properties of ultra low-loss Li2Mg4TiO7 ceramics

被引：52
|
作者：
Bi, J. X. [1 ]
Li, C. C. [1 ]
Zhang, Y. H. [1 ]
Xing, C. F. [1 ]
Yang, C. H. [1 ]
Wu, H. T. [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
来源：
MATERIALS LETTERS | 2017年 / 196卷
关键词：
Li2Mg4TiO7; Electroceramics; Microwave dielectric properties; FTIR; SINTERING BEHAVIOR; OXIDES;
D O I：
10.1016/j.matlet.2017.03.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The low-loss Li2Mg4TiO7 dielectric ceramics were prepared by the conventional solid-state method. The relationship among sintering behavior, phase composition, microstructure and dielectric properties of Li2Mg4TiO7 ceramics was investigated. All the sintered samples exhibited the single phase with rock-salt structure belonging to Fm-3m space group. The higher Q.f values of samples above 1500 degrees C were depending on crystal structure and phase composition. IR reflectivity spectrum indicated that the dielectric constant of Li2Mg4TiO7 was mainly affected by the polar optical phonons. Typically, the ceramics sintered at 1600 degrees C exhibited excellent microwave dielectric properties with epsilon(r) = 13.43, Q.f = 233,600 GHz and tau(f) = -7.24 ppm/degrees C. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：128 / 131
页数：4
相关论文
共 50 条
  • [21] Low temperature sintering and microwave dielectric properties of Li2TiO3-Li2WO4 composite ceramics
    Wang Zhen
    Song Li
    Bian Jianjiang
    CERAMICS INTERNATIONAL, 2013, 39 (08) : 9767 - 9772
  • [22] Crystal structure, infrared spectra, and microwave dielectric properties of the EuNbO4 ceramic
    Liu, Lintao
    Chen, Yueguang
    Feng, Zhanbai
    Wu, Haitao
    Zhang, Xiaoyu
    CERAMICS INTERNATIONAL, 2021, 47 (03) : 4321 - 4326
  • [23] Low-Loss Microwave Dielectric Ceramics Using (Mg1-xMnx)2TiO4 (x=0.02-0.1) Solid Solution
    Huang, Cheng-Liang
    Chen, Jhih-Yong
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (03) : 675 - 678
  • [24] Li4Mg3Ti2O9: A novel low-loss microwave dielectric ceramic for LTCC
    Bi, Jinxin
    Niu, Yunjuan
    Wu, Haitao
    CERAMICS INTERNATIONAL, 2017, 43 (10) : 7522 - 7530
  • [25] Microwave dielectric properties of Li2TiO3 ceramics sintered at low temperatures
    Liang, Jun
    Lu, Wen-Zhong
    Wu, Jia-Min
    Guan, Jian-Guo
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2011, 176 (02): : 99 - 102
  • [26] Ultra-low loss Li4+xTi2Mg7O13Fx (0 ≤ x ≤ 1.75) system microwave dielectric ceramics for LTCC applications
    Li, Rui
    Zhou, Xiaobin
    Zhai, Simei
    Hou, Shuofang
    Shi, Peng
    Liu, Peng
    CERAMICS INTERNATIONAL, 2025, 51 (07) : 8824 - 8831
  • [27] Crystal structure, Raman vibrational characteristics, and microwave dielectric properties of Mg2-xCoxTiO4 ceramics
    Huang, Yanwei
    Jiang, Hangyu
    Yang, Xiuhong
    Zhang, Yingchun
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2024, 35 (04)
  • [28] Crystal structure refinement and microwave dielectric properties of new low dielectric loss AZrNb2O8 (A: Mn, Zn, Mg and Co) ceramics
    Ramarao, S. D.
    Murthy, V. R. K.
    SCRIPTA MATERIALIA, 2013, 69 (03) : 274 - 277
  • [29] Crystal structure of corundum type Mg4(Nb2-xTax)O9 microwave dielectric ceramics with low dielectric loss
    Ogawa, H
    Kan, A
    Ishihara, S
    Higashida, Y
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (14) : 2485 - 2488
  • [30] Crystal structure, infrared-reflectivity spectra, and microwave dielectric properties of novel Ce2(MoO4)2(Mo2O7) ceramics
    Tian, Huanrong
    Liu, Lintao
    Du, Jialun
    Wu, Haitao
    Li, MingLing
    Tao, Bingjing
    CERAMICS INTERNATIONAL, 2021, 47 (22) : 31375 - 31382
12345