Structural aspects in A-site ordered perovskite CaCu3Ti4O12: Colossal dielectric behavior and Ca/Cu disordering

被引：4
|
作者：
Hori, T. [1 ]
Takesada, M. [1 ]
Onodera, A. [1 ]
机构：
[1] Hokkaido Univ, Dept Phys, Fac Sci, Sapporo, Hokkaido 0600810, Japan
来源：
FERROELECTRICS | 2017年 / 513卷 / 01期
关键词：
CCTO; colossal dielectric constant; cation disorder; A-site ordered perovskite; CONSTANT;
D O I：
10.1080/00150193.2017.1350500
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Precise analysis of crystal structure of A-site ordered perovskite CaCu3Ti4O12 was studied at 298, 517 and 785 K, where Ca/Cu disordering is taken into account. The ratio of Ca/Cu disordering is 11% at 785 K, which decreases to 1.7 % at 298 K with decreasing temperature. This Ca/Cu dynamical disordering produces meta-stable intermediate atomic configurations which force to have a polar structure for TiO6 octahedra. This structural heterogeneity may induce an instantaneous dipolar fluctuations and results in a colossal dielectric response, while the average stable state is non-polar.
引用
收藏
页码：72 / 77
页数：6
相关论文
共 50 条
  • [31] Dielectric properties of CaCu3Ti4O12 ceramics with Zn substitution for Cu
    Hu, Y.
    Jeng, T. -S.
    Liu, J. -S.
    Liu, T. -C.
    Lin, C. -C.
    ADVANCES IN APPLIED CERAMICS, 2014, 113 (02) : 98 - 101
  • [32] THE EFFECT OF STARTING POWDERS ON THE GIANT DIELECTRIC PROPERTIES OF THE PEROVSKITE CaCu3Ti4O12
    Bender, Barry
    Pan, Ming-Jen
    ADVANCES IN ELECTRONIC CERAMIC MATERIALS, 2005, 26 (05): : 101 - 108
  • [33] Electric and dielectric properties of pure and doped CaCu3Ti4O12 perovskite materials
    Chiodelli, G
    Massarotti, V
    Capsoni, D
    Bini, M
    Azzoni, CB
    Mozzati, MC
    Lupotto, P
    SOLID STATE COMMUNICATIONS, 2004, 132 (3-4) : 241 - 246
  • [34] Soft chemistry synthesis of the perovskite CaCu3Ti4O12
    Marchin, Loeic
    Guillemet-Fritsch, Sophie
    Durand, Bernard
    PROGRESS IN SOLID STATE CHEMISTRY, 2008, 36 (1-2) : 151 - 155
  • [35] Nonintrinsic origin of the colossal dielectric constants in CaCu3Ti4O12 -: art. no. 172102
    Lunkenheimer, P
    Fichtl, R
    Ebbinghaus, SG
    Loidl, A
    PHYSICAL REVIEW B, 2004, 70 (17): : 1 - 4
  • [36] Relaxor behavior in CaCu3Ti4O12 ceramics
    Ke, Shanming
    Huang, Haitao
    Fan, Huiqing
    APPLIED PHYSICS LETTERS, 2006, 89 (18)
  • [37] Structural, thermal and dielectric behavior of Polyaryletherketone (PAEK)/CaCu3Ti4O12 (CCTO) nanocomposite films
    Ashokbabu, A.
    Thomas, P.
    CERAMICS INTERNATIONAL, 2019, 45 (18) : 25052 - 25059
  • [38] Mechanical and dielectric properties of CaCu3Ti4O12 and La doped CaCu3Ti4O12 poly(vinylidene fluoride) composites
    Srivastava, Anshuman
    Maiti, Pralay
    Kumar, Devendra
    Parkash, Om
    COMPOSITES SCIENCE AND TECHNOLOGY, 2014, 93 : 83 - 89
  • [39] Multilayer ceramic capacitors with CaCu3Ti4O12 dielectric
    Kulawik, J.
    Szwagierczak, D.
    Synkiewicz, B.
    2012 INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS HELD JOINTLY WITH 11TH IEEE ECAPD AND IEEE PFM (ISAF/ECAPD/PFM), 2012,
  • [40] Microstructure and dielectric properties of CaCu3Ti4O12 ceramic
    Mohamed, Julie J.
    Hutagalung, Sabar D.
    Ain, M. Fadzil
    Deraman, Karim
    Ahmad, Zainal A.
    MATERIALS LETTERS, 2007, 61 (8-9) : 1835 - 1838
12345