Influence of Sm3+ doping on the dielectric properties of CaCu3Ti4O12 ceramics synthesized via autocombustion

Lopera, Alex; Ramírez, M. A.; Garćıa, Claudia; Paucar, Carlos; Marín, J.H.

doi:10.1016/j.inoche.2013.11.025

Cited by 13 publications

(13 citation statements)

References 16 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%

“…, 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%

“…concentration from x = 0.05 to 0. 15 Figure 6 shows an impedance spectroscopy analyses for the Ca 1-3x/2 Y x Cu 3 Ti 4 O 12 ceramics for revealing the effects of Y 3? doping ions on the electrical properties of grain and grain boundary.…”

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%

“…, 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%

Section: Introductionmentioning

confidence: 99%

See 2 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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“…Lopera et al . used sol‐gel method associated with auto‐combustion to synthetize Sm‐doped CaCu 3 Ti 4 O 12 .…”

Section: Synthesis Methodsmentioning

confidence: 99%

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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Calcium copper titanate a perovskite oxide structure: effect of fabrication techniques and doping on electrical properties—a review

Infantiya

Aslinjensipriya

Reena

et al. 2022

J Mater Sci: Mater Electron

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Influence of Sm3+ doping on the dielectric properties of CaCu3Ti4O12 ceramics synthesized via autocombustion

Cited by 13 publications

References 16 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

Calcium copper titanate a perovskite oxide structure: effect of fabrication techniques and doping on electrical properties—a review

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