Very high-performance dielectric properties of Ca1−3x/2YbxCu3Ti4O12 ceramics

Boonlakhorn, Jakkree; Thongbai, Prasit; Putasaeng, Bundit; Yamwong, Teerapon; Maensiri, Santi

doi:10.1016/j.jallcom.2014.05.143

Cited by 78 publications

(39 citation statements)

References 38 publications

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“…The values of lattice parameter (a) were found to be 7.3921 ± 0.0001, 7.3907 ± 0.0016, 7.3906 ± 0.0014, and 7.3857 ± 0.0018 Å for the Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 ceramics with x = 0, 0.05, 0.10, and 0.15, respectively. These values are well comparable to the values reported in literature [3,5,12,14,15] and JCPDS 75-2188 for 7.391 Å . Additionally, it is likely that the lattice parameter tends to decrease with increasing Y 3?…”

Section: Introductionsupporting

confidence: 91%

“…In recent years, CaCu 3 Ti 4 O 12 [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and related ACu 3-Ti 4 O 12 ceramic oxides (A = La 2/3 [3,6,16], Bi 2/3 [3,16,17], Y 2/3 [3,18], Na 1/2 Sm 1/2 [3,19], Na 1/2 Bi 1/2 [3,[20][21][22][23][24], Na 1/2 La 1/2 [25,26], Na 1/2 Y 1/2 [27,28], etc.) have received considerable attention due to their very high dielectric constants (e 0 * 10 3 -10 5 ) over the temperature range from 100 to 600 K. These ceramics also exhibited nonlinear current-voltage (or nonlinear current density-electric field, J-E) properties [4,7,19,23,26].…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, the loss tangent (tand) values of CaCu 3 Ti 4 O 12 and related ceramic oxides are still higher than the standard value for capacitor applications, making them unsuitable for capacitor applications [1,5,6,8,10,13,23,28,29]. Investigation to reduce tand value is an important and urgent issue that should be intensively performed [8,10,14,21,[29][30][31]. To overcome this problem, the dielectric properties of CaCu 3 Ti 4 O 12 ceramics substituted by Ln 3? ions have been widely investigated, where Ln 3?…”

Section: Introductionmentioning

confidence: 99%

“…%, Sigma-Aldrich), Cu(CH 3 COO) 2 ÁH 2 O (99.0 %, Sigma-Aldrich), C 16 H 28 O 6 Ti (75 wt % in isopropanol, Sigma-Aldrich), Y(CH 3 CO 2 ) 3 ÁxH 2 O (99.9 %, Sigma-Aldrich), ethylene glycol, citric acid, ethanol, and deionized water. Details of the preparation method are given elsewhere [14]. Polymeric gel of each composition was dried in air at 500°C for 15 min using heating rate 5°C/min.…”

Section: Introductionmentioning

confidence: 99%

“…, and Eu 3? ions were substituted [6,11,12,14,15]. The densities of all the sintered ceramics were measured using the Archimedes method.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Y doping ions on microstructure, dielectric response, and electrical properties of Ca1−3x/2Y x Cu3Ti4O12 ceramics

Boonlakhorn

Kidkhunthod

Putasaeng

et al. 2015

J Mater Sci: Mater Electron

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The effects of Y 3? doping ions on ceramic microstructure, dielectric response, and electrical properties of Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 (x = 0, 0.05, 0.10, and 0.15) ceramics prepared by a modified sol-gel method were investigated. A grain size of Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 was reduced by Y 3? ions due to a solute drag effect. Substitution of CaCu 3 Ti 4 O 12 ceramics with suitable Y 3? concentration of 5 at. % can improve dielectric properties with high-dielectric permittivity of e 0 * 1.37 9 10 4 and low tand * 0.05 at 1 kHz. The results revealed that the relationship of the mean grain size and e 0 cannot be formulated. Using impedance spectroscopy analysis, the grain boundary resistance (R gb ) of Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 ceramics was found to be strongly enhanced by Y 3? doping ions with x = 0.05. With further increasing x from 0.05 to 0.15, R gb decreased. While the grain resistance tended to increase with increasing Y 3?concentration (x = 0-0.15). Variation of a low-frequency tand value in all Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 ceramics due to the influence of Y 3? substitution was well consistent with their changes in R gb values. Non-Ohmic properties of Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 ceramics were also investigated.

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Section: Introductionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…, and Eu 3? ions were substituted [6,11,12,14,15]. The densities of all the sintered ceramics were measured using the Archimedes method.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Y doping ions on microstructure, dielectric response, and electrical properties of Ca1−3x/2Y x Cu3Ti4O12 ceramics

Boonlakhorn

Kidkhunthod

Putasaeng

et al. 2015

J Mater Sci: Mater Electron

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From Synthesis to Applications: Copper Calcium Titanate (CCTO) and its Magnetic and Photocatalytic Properties

et al. 2019

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Investigations focusing on electrical energy storage capacitors especially the dielectric ceramic capacitors for high energy storage density are attracting more and more attention in the recent years. Ceramic capacitors possess a faster charge‐discharge rate and improved mechanical and thermal properties compared with other energy storage devices such as batteries. The challenge is to obtain ceramic capacitors with outstanding mechanical, thermal and storage properties over large temperature and frequencies ranges. ABO 3 as a type of perovskites showed a strong piezoelectric, dielectric, pyroelectric, and electro‐optic properties useful as energy storage and environmental devices. CaCu 3 Ti 4 O 12 (CCTO) perovskite with cubic lattice (Im3 symmetry) was discovered to have a colossal dielectric constant (10 4 ) that is stable over a wide range of frequencies (10 Hz–1 MHz) and temperature independence (100–300 K). The origin of this high dielectric constant is not fully established, specially because it is the same for single crystal and thin films. In this review, the history of CCTO will be introduced. The synthesis and the sintering approaches, the dopant elements used as well as the applications of CCTO will be reported. In addition to dielectrical properties useful to energy storage devices; CCTO could serve as photocatalytic materials with a very good performance in visible light.

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Giant dielectric behavior and electrical properties of Ca1−3x/2Lu x Cu3Ti4O12 ceramics

et al. 2015

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Very high-performance dielectric properties of Ca1−3x/2YbxCu3Ti4O12 ceramics

Cited by 78 publications

References 38 publications

Effects of Y doping ions on microstructure, dielectric response, and electrical properties of Ca1−3x/2Y x Cu3Ti4O12 ceramics

Effects of Y doping ions on microstructure, dielectric response, and electrical properties of Ca1−3x/2Y x Cu3Ti4O12 ceramics

From Synthesis to Applications: Copper Calcium Titanate (CCTO) and its Magnetic and Photocatalytic Properties

Giant dielectric behavior and electrical properties of Ca1−3x/2Lu x Cu3Ti4O12 ceramics

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