Non-stoichiometry in 'CaCu_(3)Ti_(4)O_(12)' (CCTO) ceramics

机译：“ CaCu_（3）Ti_（4）O_（12）”（CCTO）陶瓷的非化学计量

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A combined powder X-ray lattice parameter and ceramic impedance spectroscopy study is presented on materials within the CaO–CuO–TiO_(2) ternary phase diagram. Several compositions containing CaCu_(3)Ti_(4)O_(12) (CCTO) and small amounts of secondary phases such as TiO_(2), CaTiO_(3) and CuO are analysed and two different defect mechanisms are identified as the cause of the non-stoichiometry in CCTO. The first mechanism involves a variation in the Cu content, which explains the large differences in the intrinsic bulk and extrinsic grain boundary (GB) resistance, and the formation of the ceramic internal barrier layer capacitor (IBLC) structure. The second mechanism is associated with Ca–Cu anti-site disorder causing an unusually high intrinsic bulk permittivity above that predicted from Clausius–Mossotti calculations.

机译：在CaO–CuO–TiO_（2）三元相图内的材料上进行了粉末X射线晶格参数和陶瓷阻抗谱的组合研究。分析了几种包含CaCu_（3）Ti_（4）O_（12）（CCTO）和少量次级相的成分，如TiO_（2），CaTiO_（3）和CuO，并确定了两种不同的缺陷机理是造成这种缺陷的原因。 CCTO中的非化学计量。第一种机制涉及Cu含量的变化，这解释了本征体积和外在晶界（GB）电阻的巨大差异，以及陶瓷内部势垒层电容器（IBLC）结构的形成。第二种机制与Ca-Cu反位错有关，导致固有的高固有介电常数高于从Clausius-Mossotti计算得出的值。

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Schmidt Rainer; Pandey Shubhra; Fiorenza Patrick; Sinclair Darek C.;
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年度 2013
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1. Characterization of nickel doped CCTO: CaCu_(2.9)Ni_(0.1)Ti_4O_(12) and CaCu_3Ti_(3.9)Ni_(0.1)O_(12) http://CaCu3Ti3.9Nio.1O12 synthesized by semi-wet route [J] . Alok Kumar Rai, K.D. Mandal, D. Kumar Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2010,第1a2期

机译：镍掺杂CCTO的表征：通过半湿法合成的CaCu_（2.9）Ni_（0.1）Ti_4O_（12）和CaCu_3Ti_（3.9）Ni_（0.1）O_（12）
2. Dielectric behavior of CaCu_(3)Ti_(4)O_(12) electro-ceramic doped with La,Mn and Ni synthesized by modified citrate-gel route [J] . Laxman SINGH, U.S.RAI, Alok Kumar RAI, 先进陶瓷（英文版） . 2013,第002期

机译：通过改性柠檬酸盐 - 凝胶途径合成的La，Mn和Ni的CaCu_（3）Ti_（4）O_（12）电陶瓷的介电行为
3. Microstructural and dielectric properties of donor doped (La~(3+)) CaCu_(3)Ti_(4)O_(12) ceramics [J] . B. Shri Prakash, K. B. R. Varma Journal of Materials Science. Materials in Electronics . 2006,第11期

机译：施主掺杂（La〜（3+））CaCu_（3）Ti_（4）O_（12）陶瓷的微结构和介电性能
4. DIELECTRIC CHARACTERIZATION OF POLYCRYSTALLINE AND EPITAXIAL THIN-FILM CaCu_(3)Ti_(4)O_(12) (CCTO) [C] . JIANREN LI, KYUHO CHO, NAIJUAN WU, International Conference on Properties and Applications of Dielectric Materials . 2003

机译：多晶和外延薄膜Cacu_（3）Ti_（4）O_（12）（CCTO）的介电表征
5. The trajectory of modern ceramic scholarship: Okuda Seiichi's ceramic appreciation in the Taisho period, 1912 -- 1926. [D] . Sang, Seung Yeon. 2016

机译：现代陶瓷研究的轨迹：奥田诚一大正时期（1912年至1926年）对陶瓷的欣赏。
6. Uniformly Porous Nanocrystalline CaMgFe1.33Ti3O12 Ceramic Derived Electro-Ceramic Nanocomposite for Impedance Type Humidity Sensor [O] . Ashis Tripathy, Sumit Pramanik, Ayan Manna, 2016

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7. Non-stoichiometry in "CaCu3Ti4O12" (CCTO) ceramics [O] . Schmidt R, Pandey S, Fiorenza P, 2013

机译：“CaCu3Ti4O12”（CCTO）陶瓷中的非化学计量

Non-stoichiometry in 'CaCu_(3)Ti_(4)O_(12)' (CCTO) ceramics

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