Relationship of Crystal Structure and Microwave Dielectric Properties in Ni0.5Ti0.5NbO4 Ceramics with Ta Substitution

被引:12
作者
Huang, Xin [1 ]
Zhang, Huaiwu [1 ]
Lai, Yuanming [1 ]
Wang, Gang [1 ]
Li, Mingming [1 ]
Hong, Caiyun [1 ]
Li, Jie [1 ]
机构
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China
基金
中国国家自然科学基金;
关键词
Structure elucidation; Microwave dielectric properties; Niobium; Tantalum; Ionic substitution; ZNZRNB2O8; IONS; MG; CO;
D O I
10.1002/ejic.201800016
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We have prepared Ni0.5Ti0.5Nb1-xTaxO4 microwave dielectric ceramics using a traditional solid-state reaction method. The influence of Ta5+ substituted at the Nb5+ site on the crystal structures and dielectric properties of Ni0.5Ti0.5Nb1-xTaxO4 ceramics is discussed. Structural refinement indicates that the distortion in the oxygen octahedron is affected by Ta substitution. The dielectric constant is dependent on the polarization of the NbO6 octahedron. The Q x f value is improved as the Ta content increases, because of the increasing packing fractions. The (f) value is mostly dominated by distortions of the Nb-O bonds ((Nb-O)); and (Nb-O) reduces with increasing Ta ion doping in the Nb site, which makes the (f) value decrease with increasing Ta content. Optimal microwave dielectric properties (epsilon(r) = 48.5, Q x f = 17500 GHz, and (f) = 88.6 ppm degrees C-1 at the resonant frequency of 6.05 GHz) are obtained for Ni0.5Ti0.5Nb1-xTaxO4 ceramics at x = 0.2.
引用
收藏
页码:1800 / 1804
页数:5
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  • [21] Sintering characteristics and microwave dielectric properties of low loss ZnZrNb2O8 ceramics achieved by reaction sintering process
    Wu, Haitao
    Bi, J. X.
    Wang, H. J.
    Jiang, X. S.
    Mao, Y. X.
    [J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2016, 27 (06) : 5670 - 5675
  • [22] Bond ionicity, lattice energy, bond energy and microwave dielectric properties of ZnZr(Nb1-xAx)2O8 (A = Ta, Sb) ceramics
    Zhang, Ping
    Zhao, Yonggui
    Wu Haitao
    [J]. DALTON TRANSACTIONS, 2015, 44 (38) : 16684 - 16693
  • [23] Correlation of crystal structure and microwave dielectric properties of Nd1.02(Nb1-xTax)0.988O4 ceramic
    Zhang, Ping
    Zhao, Yonggui
    Liu, Jian
    Song, Zhenkun
    Xiao, Mi
    Wang, Xiuyu
    [J]. DALTON TRANSACTIONS, 2015, 44 (11) : 5053 - 5057
  • [24] Crystal structure and microwave dielectric characteristics of Zr-substituted CoTiNb2O8 ceramics
    Zhang, Yun
    Zhang, Yingchun
    Xiang, Maoqiao
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2016, 36 (08) : 1945 - 1951
  • [25] Influence of Ta substitution for Nb in Zn3Nb2O8 and the impact on the crystal structure and microwave dielectric properties
    Zhao, Yonggui
    Zhang, Ping
    [J]. DALTON TRANSACTIONS, 2016, 45 (29) : 11807 - 11816
  • [26] High permittivity and low loss microwave dielectrics suitable for 5G resonators and low temperature co-fired ceramic architecture
    Zhou, Di
    Pang, Li-Xia
    Wang, Da-Wei
    Li, Chun
    Jin, Biao-Bing
    Reaney, Ian M.
    [J]. JOURNAL OF MATERIALS CHEMISTRY C, 2017, 5 (38) : 10094 - 10098