Study of structure and dielectric properties of Bi1.5Zn1+xNb1.5O7+x ceramics

被引：0
作者：
Peng Xiaosong [1 ]
Ding Shihua [1 ]
Song Tianxiu [1 ]
Jiang Xufeng [1 ]
Liu Xu [1 ]
机构：
[1] Xihua Univ, Sch Mat Sci & Engn, Chengdu, Peoples R China
来源：
FERROELECTRICS | 2016年 / 499卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Dielectric relaxation; pyrochlore structure; bond valance; activation energy; CRYSTAL-CHEMISTRY; RELAXATION;
D O I：
10.1080/00150193.2016.1171990
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bi1.5Zn1+xNb1.5O7+x (x = 0.005, 0.01, 0.015, 0.02) ceramics were prepared and the structure, crystal chemistry and dielectric properties were investigated. The results revealed that the samples showed a cubic pyrochlore structure when x 0.015mol and the second phase occurred at x = 0.02mol. With the increase of x, the lattice constant and the average distance R(A-O) increased and the bond valance theory showed that the AV(O)[A(4)] and oxygen parameter of 48f(O) gradually decreased. The dielectric constant decreased and the dielectric loss increased. The activation energy increased from 0.2925eV to 0.3043eV by using the Arrhenius equation.
引用
收藏
页码：64 / 71
页数：8
相关论文
共 17 条
  • [1] Impurity-induced ferroelectric relaxor behavior in quantum paraelectric SrTiO3 and ferroelectric BaTiO3
    Ang, C
    Yu, Z
    Jing, Z
    [J]. PHYSICAL REVIEW B, 2000, 61 (02): : 957 - 961
  • [2] BOND-VALENCE PARAMETERS FOR SOLIDS
    BRESE, NE
    OKEEFFE, M
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1991, 47 : 192 - 197
  • [3] EMPIRICAL BOND-STRENGTH BOND-LENGTH CURVES FOR OXIDES
    BROWN, ID
    SHANNON, RD
    [J]. ACTA CRYSTALLOGRAPHICA SECTION A, 1973, A 29 (MAY1): : 266 - 282
  • [4] Investigation of the dielectric properties of bismuth pyrochlores
    Cann, DP
    Randall, CA
    Shrout, TR
    [J]. SOLID STATE COMMUNICATIONS, 1996, 100 (07) : 529 - 534
  • [5] Chen Kai, 2006, Journal of the Chinese Ceramic Society, V34, P1374
  • [6] Phase transformation, reaction kinetics and microwave characteristics of Bi2O3-ZnO-Nb2O5 ceramics
    Chen, SY
    Lee, SY
    Lin, YJ
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (06) : 873 - 881
  • [7] Study of structure and dielectrc properties of non-stoichiometric Bi2O3-ZnO-Nb2O5 ceramics
    Ding Shihua
    Yao Xi
    Yuan Li
    [J]. JOURNAL OF ELECTROCERAMICS, 2008, 21 (1-4) : 435 - 438
  • [8] Raman spectra, photoluminescence and dielectric relaxation in Bi1.5ZnNb1.5O7 pyrochlore
    Liu, Y.
    Withers, R. L.
    Chen, H.
    Li, Q.
    Tan, H.
    [J]. CURRENT APPLIED PHYSICS, 2011, 11 (03) : S171 - S174
  • [9] Crystal chemistry on a lattice: The case of BZN and BZN-related pyrochlores
    Liu, Yun
    Withers, Ray L.
    Welberry, T. R.
    Wang, Hong
    Du, Huiling
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (07) : 2141 - 2149
  • [10] STRUCTURAL CHARACTERISTICS OF PYROCHLORE FORMATION
    MCCAULEY, RA
    [J]. JOURNAL OF APPLIED PHYSICS, 1980, 51 (01) : 290 - 294
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