Improvement of the Nonlinear and Dielectric Properties of CaCu3Ti4O12 Ceramics by Nickel Doping

被引:8
作者
Rhouma, Salam [1 ,2 ]
Megriche, Adel [1 ]
Souidi, Emna [1 ]
Said, Senda [1 ]
Autret-lambert, Cecile [2 ]
机构
[1] Univ Tunis El Manar, Fac Sci Tunis, Unite Rech Chim Minerale Appl UR11ES18, Campus Univ Farhat Hached, Tunis 2092, Tunisia
[2] Univ Tours, GREMAN, UFR Sci & Tech, CNRS,UMR 7341, Parc Grandmont, F-37200 Tours, France
关键词
Semi-wet route; Giant dielectric constant; Loss factor; Grain boundary resistance; CU-RICH PHASE; ELECTRICAL-PROPERTIES; GIANT PERMITTIVITY; GRAIN-BOUNDARY; MICROSTRUCTURE; CONSTANT; SEGREGATION; STABILITY; BEHAVIOR; ORIGIN;
D O I
10.1007/s10904-023-02816-4
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
CaCu3Ti4O12 (CCTO) ceramics have been widely demonstrated due to their high dielectric constant and are considered potential materials for capacitor applications. However, its high dielectric loss (tan & delta;), which is greater than 0.1, makes it unsuitable for a lot of uses. Generally, CCTO doped with Ni ions exhibits low nonlinear properties and a high tan & delta;. In this work, CaCu2.9Ni0.1Ti4O12 (with x = 0/0.1/0.2) ceramics were synthesized by a semi-wet route. Significantly, the CaCu2.8Ni0.2Ti4O12 (Ni02) ceramic revealed an enhancement in breakdown electric voltage (E-b & AP; 4208 V/cm) and nonlinear coefficient (& alpha; & AP; 7.69) with a considerably decrease in dielectric loss (tan & delta; & AP; 0.017). The mean grain size for Ni02 ceramic decreased from 6.15 to 2.23 & mu;m. Density increased at first from 91.05 to 92.88% and then decreased by 89.6% with grain size reduction. The decrease in its mean grain size was attributed to the incorporation of Ni ions into Ti sites, as explained by DRX, EDS, and Raman results. The band gap energy increased from 2.25 eV for undoped CCTO ceramic to 3.54 eV for Ni02 ceramic. Additionally, all the ceramic samples present a high dielectric constant (& epsilon;) in the range of 10(4)-10(5). According to the complex impedance spectroscopy results, the electrically heterogeneous CCTO microstructure is responsible for the high dielectric response. Moreover, the enhancement of dielectric and electric properties is attributed to the grain boundary effect.
引用
收藏
页码:221 / 234
页数:14
相关论文
共 59 条
[1]   Representations of impedance spectra of ceramics - Part I. Simulated study cases [J].
Abrantes, JCC ;
Labrincha, JA ;
Frade, JR .
MATERIALS RESEARCH BULLETIN, 2000, 35 (06) :955-964
[2]   Characterization of grain boundary impedances in fine- and coarse-grained CaCu3Ti4O12 ceramics -: art. no. 094124 [J].
Adams, TB ;
Sinclair, DC ;
West, AR .
PHYSICAL REVIEW B, 2006, 73 (09)
[3]   Synthesis and Characterization of CoxZn1-xAlFeO4 Nanoparticles [J].
Amir, Md. ;
Baykal, A. ;
Guner, S. ;
Sertkol, M. ;
Sozeri, H. ;
Toprak, M. .
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, 2015, 25 (04) :747-754
[4]   Synthesis, Structural and Optical Characterization of MgO Nanocrystalline Embedded in PVA Matrix [J].
Bdewi, Shahbaa F. ;
Abdullah, Omed Gh. ;
Aziz, Bakhtyar K. ;
Mutar, Ayad A. R. .
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, 2016, 26 (02) :326-334
[5]   SYNTHESIS AND CHARACTERIZATION OF SERIES OF ISOTYPE PEROVSKITE TITANATES OF (CACU3) (MN4)O12 [J].
BOCHU, B ;
DESCHIZEAUX, MN ;
JOUBERT, JC ;
COLLOMB, A ;
CHENAVAS, J ;
MAREZIO, M .
JOURNAL OF SOLID STATE CHEMISTRY, 1979, 29 (02) :291-298
[6]   Significantly improved giant dielectric response in giant dielectric response in CaCu2.95Ni0.05Ti4-xGexO12 (x = 0.05, 0.10) ceramics [J].
Boonlakhorn, Jakkree ;
Kidkhunthod, Pinit ;
Thongbai, Prasit .
MATERIALS TODAY COMMUNICATIONS, 2019, 21
[7]   Origin of significantly enhanced dielectric response and nonlinear electrical behavior in Ni2+-doped CaCu3Ti4O12: Influence of DC bias on electrical properties of grain boundary and associated giant dielectric properties [J].
Boonlakhorn, Jakkree ;
Putasaeng, Bundit ;
Thongbai, Prasit .
CERAMICS INTERNATIONAL, 2019, 45 (06) :6944-6949
[8]   Role of doping and CuO segregation in improving the giant permittivity of CaCU3Ti4O12 [J].
Capsoni, D ;
Bini, M ;
Massarotti, V ;
Chiodelli, G ;
Mozzati, MC ;
Azzoni, CB .
JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (12) :4494-4500
[9]   Electric and dielectric properties of pure and doped CaCu3Ti4O12 perovskite materials [J].
Chiodelli, G ;
Massarotti, V ;
Capsoni, D ;
Bini, M ;
Azzoni, CB ;
Mozzati, MC ;
Lupotto, P .
SOLID STATE COMMUNICATIONS, 2004, 132 (3-4) :241-246
[10]   Leading role of grain boundaries in colossal permittivity of doped and undoped CCTO [J].
De Almeida-Didry, Sonia ;
Autret, Cecile ;
Lucas, Anthony ;
Honstettre, Christophe ;
Pacreau, Francois ;
Gervais, Francois .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2014, 34 (15) :3649-3654