Effect of site selection on dielectric properties of Fe doped CaCu3Ti4O12 electro-ceramic synthesized by citrate nitrate gel route

被引：11
|
作者：
Singh, L. [1 ]
Mandal, K. D. [2 ]
Rai, U. S. [1 ]
Rai, A. K. [3 ]
机构：
[1] Banaras Hindu Univ, Ctr Adv Study, Fac Sci, Dept Chem, Varanasi 221005, Uttar Pradesh, India
[2] Banaras Hindu Univ, Indian Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India
[3] Chonnam Natl Univ, Dept Mat Sci & Engn, Kwangju 500757, South Korea
来源：
INDIAN JOURNAL OF PHYSICS | 2014年 / 88卷 / 07期
关键词：
Synthesis; Scanning electron microscopy; Materials processing; Dielectric constant; CONSTANT;
D O I：
10.1007/s12648-014-0471-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of doping of Fe at Cu2+ and Ti4+ sites in calcium copper titanate, CaCu3Ti4O12, has been examined. The compositions CaCu3-xFexTi4O12 (CCFTO) and CaCu3Ti4-xFexO12 (CCTFO), (x = 0.10) have been synthesized by citrate nitrate gel route. XRD analysis confirms the formation of single-phase ceramics on sintering at 900 degrees C for 8 h. Structure of CaCu3Ti4O12 does not change on doping with iron on Cu-site or Ti-site and it remains cubic. Surface morphology indicates that the average grain size is in range of 30-90 mu m and 5-7 mu m for systems CCFTO and CCTFO, respectively. EDX studies confirm the presence of Ca2+, Cu2+, Ti4+ and Fe3+ ions as per stoichiometry of ceramics. The grain resistance of CCTFO is higher than that of CCFTO. Values of dielectric constant (epsilon(r)) and dielectric loss (tan delta) of CCTFO are higher than those of CCFTO ceramic at all measured frequencies and temperatures.
引用
收藏
页码：665 / 670
页数：6
相关论文
共 50 条
  • [41] Thermal and electrical properties of CaCu3Ti4O12 synthesized by soft chemistry route
    T. C. Porfirio
    E. N. S. Muccillo
    Journal of Thermal Analysis and Calorimetry, 2018, 133 : 851 - 857
  • [42] The effect of processing on the giant dielectric properties of CaCu3Ti4O12
    Bender, BA
    Pan, MJ
    MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2005, 117 (03): : 339 - 347
  • [43] Poly(vinylidene fluoride)/CaCu3Ti4O12 and La doped CaCu3Ti4O12 composites with improved dielectric and mechanical properties
    Srivastava, Anshuman
    Jana, Karun Kumar
    Maiti, Pralay
    Kumar, Devendra
    Parkash, Om
    MATERIALS RESEARCH BULLETIN, 2015, 70 : 735 - 742
  • [44] Dielectric properties of Li-doped CaCu3Ti4O12 Ceramics
    He, Ying
    Zhang, Huaiwu
    Li, Yuanxun
    Ling, Weiwei
    Wang, Yunyan
    Liu, Peng
    FUNCTIONAL AND ELECTRONIC MATERIALS, 2011, 687 : 251 - +
  • [45] Thermal and electrical properties of CaCu3Ti4O12 synthesized by soft chemistry route
    Porfirio, T. C.
    Muccillo, E. N. S.
    JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2018, 133 (02) : 851 - 857
  • [46] Dielectric properties of Sm-doped CaCu3Ti4O12 ceramics
    Li, J.
    Fu, B.
    Lu, H.
    Huang, C.
    Sheng, J. W.
    CERAMICS INTERNATIONAL, 2013, 39 : S149 - S152
  • [47] Dielectric properties of Zr-doped CaCu3Ti4O12 ceramics
    He, Yong
    Chen, Kepi
    Liu, Dongyu
    Liu, Zongde
    HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2, 2008, 368-372 : 129 - 131
  • [48] Dielectric Properties of B-doped CaCu3Ti4O12 Ceramics
    Li Shengtao
    Yang Yang
    Wang Hui
    Li Jianying
    PROCEEDINGS OF 2011 INTERNATIONAL CONFERENCE ON ELECTRICAL INSULATING MATERIALS (ISEIM), 2011, : 482 - 485
  • [49] Dielectric properties of CaCu3Ti4O12 ceramics doped with aluminium and fluorine
    Yanchevskii, O. Z.
    V'yunov, O., I
    Belous, A. G.
    Kovalenko, L. L.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 874
  • [50] Influence of Zn doping on microstructures and dielectric properties in CaCu3Ti4O12 ceramic synthesised by semiwet route
    Singh, L.
    Rai, U. S.
    Mandal, K. D.
    ADVANCES IN APPLIED CERAMICS, 2012, 111 (07) : 374 - 380
12345