Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application

Anshuman Srivastava; Om Parkash; Devendra Kumar; Pralay Maiti

doi:doi:10.11648/j.ajmsp.20170206.13

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Structural and Dielectric Properties of Lanthanum Doped CaCu₃Ti₄O₁₂ for Capacitor Application

Anshuman Srivastava, Om Parkash, Devendra Kumar, Pralay Maiti

Received: 24 September 2017 Accepted: 26 October 2017 Published: 15 November 2017

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Abstract

CaCu₃Ti₄O₁₂ (CCTO) is a novel material with high relative dielectric constant and low loss tangent, CCTO belongs to a family of oxides of the type ACu₃Ti₄O₁₂ (A=Ca, Cd, Sr, Na, Th). CaCu₃Ti₄O₁₂ was first reported by Subramanian et al., to have an unusually high dielectric constant (~10,000) at 1 kHz. It is well known that dielectric properties of CCTO are strongly dependent upon the processing conditions as well as on doping. Semi-wet route was used to synthesise samples of CaCu₃Ti₄O₁₂ and Ca_(1-3x/2)La_xCu₃Ti₄O₁₂ (x=0.01). Analytical grade chemicals, Ca(NO₃)₂.4H₂O, La(NO₃)₃.6H₂O, Cu(NO₃)₂.3H₂O, titanium dioxide and citric acid having purity better than 99.95% were used as starting materials. The formation of single-phase solid solutions was confirmed by the absence characteristic lines of constituent’s oxides in the XRD patterns. Dielectric measurement of undoped and La doped CCTO has been performed using four probe novocontrol set up (ZG4) in a wide range of temperature starting from the room temperature. With La doping in CCTO there is an increase in the value of dielectric constant in comparison to undoped CCTO.

DOI	10.11648/j.ajmsp.20170206.13
Published in	American Journal of Materials Synthesis and Processing (Volume 2, Issue 6, November 2017)
Page(s)	90-93
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

CaCu₃Ti₄O₁₂, XRD, Dielectric Constant, Dielectric Loss

References

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APA Style

Anshuman Srivastava, Om Parkash, Devendra Kumar, Pralay Maiti. (2017). Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. American Journal of Materials Synthesis and Processing, 2(6), 90-93. https://doi.org/10.11648/j.ajmsp.20170206.13

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ACS Style

Anshuman Srivastava; Om Parkash; Devendra Kumar; Pralay Maiti. Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. Am. J. Mater. Synth. Process. 2017, 2(6), 90-93. doi: 10.11648/j.ajmsp.20170206.13

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AMA Style

Anshuman Srivastava, Om Parkash, Devendra Kumar, Pralay Maiti. Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. Am J Mater Synth Process. 2017;2(6):90-93. doi: 10.11648/j.ajmsp.20170206.13

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@article{10.11648/j.ajmsp.20170206.13,
  author = {Anshuman Srivastava and Om Parkash and Devendra Kumar and Pralay Maiti},
  title = {Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application},
  journal = {American Journal of Materials Synthesis and Processing},
  volume = {2},
  number = {6},
  pages = {90-93},
  doi = {10.11648/j.ajmsp.20170206.13},
  url = {https://doi.org/10.11648/j.ajmsp.20170206.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmsp.20170206.13},
  abstract = {CaCu3Ti4O12 (CCTO) is a novel material with high relative dielectric constant and low loss tangent, CCTO belongs to a family of oxides of the type ACu3Ti4O12 (A=Ca, Cd, Sr, Na, Th). CaCu3Ti4O12 was first reported by Subramanian et al., to have an unusually high dielectric constant (~10,000) at 1 kHz. It is well known that dielectric properties of CCTO are strongly dependent upon the processing conditions as well as on doping. Semi-wet route was used to synthesise samples of CaCu3Ti4O12 and Ca(1-3x/2)LaxCu3Ti4O12 (x=0.01). Analytical grade chemicals, Ca(NO3)2.4H2O, La(NO3)3.6H2O, Cu(NO3)2.3H2O, titanium dioxide and citric acid having purity better than 99.95% were used as starting materials. The formation of single-phase solid solutions was confirmed by the absence characteristic lines of constituent’s oxides in the XRD patterns. Dielectric measurement of undoped and La doped CCTO has been performed using four probe novocontrol set up (ZG4) in a wide range of temperature starting from the room temperature. With La doping in CCTO there is an increase in the value of dielectric constant in comparison to undoped CCTO.},
 year = {2017}
}

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TY  - JOUR
T1  - Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application
AU  - Anshuman Srivastava
AU  - Om Parkash
AU  - Devendra Kumar
AU  - Pralay Maiti
Y1  - 2017/11/15
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmsp.20170206.13
DO  - 10.11648/j.ajmsp.20170206.13
T2  - American Journal of Materials Synthesis and Processing
JF  - American Journal of Materials Synthesis and Processing
JO  - American Journal of Materials Synthesis and Processing
SP  - 90
EP  - 93
PB  - Science Publishing Group
SN  - 2575-1530
UR  - https://doi.org/10.11648/j.ajmsp.20170206.13
AB  - CaCu3Ti4O12 (CCTO) is a novel material with high relative dielectric constant and low loss tangent, CCTO belongs to a family of oxides of the type ACu3Ti4O12 (A=Ca, Cd, Sr, Na, Th). CaCu3Ti4O12 was first reported by Subramanian et al., to have an unusually high dielectric constant (~10,000) at 1 kHz. It is well known that dielectric properties of CCTO are strongly dependent upon the processing conditions as well as on doping. Semi-wet route was used to synthesise samples of CaCu3Ti4O12 and Ca(1-3x/2)LaxCu3Ti4O12 (x=0.01). Analytical grade chemicals, Ca(NO3)2.4H2O, La(NO3)3.6H2O, Cu(NO3)2.3H2O, titanium dioxide and citric acid having purity better than 99.95% were used as starting materials. The formation of single-phase solid solutions was confirmed by the absence characteristic lines of constituent’s oxides in the XRD patterns. Dielectric measurement of undoped and La doped CCTO has been performed using four probe novocontrol set up (ZG4) in a wide range of temperature starting from the room temperature. With La doping in CCTO there is an increase in the value of dielectric constant in comparison to undoped CCTO.
VL  - 2
IS  - 6
ER  -

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Author Information

Anshuman Srivastava

Mechanical Engineering Department, SIET, Allahabad, India
Om Parkash

Department of Ceramic Engineering, Indian Institute of Technologym, Banaras Hindu University, Varanasi, India
Devendra Kumar

Department of Ceramic Engineering, Indian Institute of Technologym, Banaras Hindu University, Varanasi, India
Pralay Maiti

School of Material Science & Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, India

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APA Style

Anshuman Srivastava, Om Parkash, Devendra Kumar, Pralay Maiti. (2017). Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. American Journal of Materials Synthesis and Processing, 2(6), 90-93. https://doi.org/10.11648/j.ajmsp.20170206.13

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ACS Style

Anshuman Srivastava; Om Parkash; Devendra Kumar; Pralay Maiti. Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. Am. J. Mater. Synth. Process. 2017, 2(6), 90-93. doi: 10.11648/j.ajmsp.20170206.13

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AMA Style

Anshuman Srivastava, Om Parkash, Devendra Kumar, Pralay Maiti. Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application. Am J Mater Synth Process. 2017;2(6):90-93. doi: 10.11648/j.ajmsp.20170206.13

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@article{10.11648/j.ajmsp.20170206.13,
  author = {Anshuman Srivastava and Om Parkash and Devendra Kumar and Pralay Maiti},
  title = {Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application},
  journal = {American Journal of Materials Synthesis and Processing},
  volume = {2},
  number = {6},
  pages = {90-93},
  doi = {10.11648/j.ajmsp.20170206.13},
  url = {https://doi.org/10.11648/j.ajmsp.20170206.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmsp.20170206.13},
  abstract = {CaCu3Ti4O12 (CCTO) is a novel material with high relative dielectric constant and low loss tangent, CCTO belongs to a family of oxides of the type ACu3Ti4O12 (A=Ca, Cd, Sr, Na, Th). CaCu3Ti4O12 was first reported by Subramanian et al., to have an unusually high dielectric constant (~10,000) at 1 kHz. It is well known that dielectric properties of CCTO are strongly dependent upon the processing conditions as well as on doping. Semi-wet route was used to synthesise samples of CaCu3Ti4O12 and Ca(1-3x/2)LaxCu3Ti4O12 (x=0.01). Analytical grade chemicals, Ca(NO3)2.4H2O, La(NO3)3.6H2O, Cu(NO3)2.3H2O, titanium dioxide and citric acid having purity better than 99.95% were used as starting materials. The formation of single-phase solid solutions was confirmed by the absence characteristic lines of constituent’s oxides in the XRD patterns. Dielectric measurement of undoped and La doped CCTO has been performed using four probe novocontrol set up (ZG4) in a wide range of temperature starting from the room temperature. With La doping in CCTO there is an increase in the value of dielectric constant in comparison to undoped CCTO.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Structural and Dielectric Properties of Lanthanum Doped CaCu3Ti4O12 for Capacitor Application
AU  - Anshuman Srivastava
AU  - Om Parkash
AU  - Devendra Kumar
AU  - Pralay Maiti
Y1  - 2017/11/15
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmsp.20170206.13
DO  - 10.11648/j.ajmsp.20170206.13
T2  - American Journal of Materials Synthesis and Processing
JF  - American Journal of Materials Synthesis and Processing
JO  - American Journal of Materials Synthesis and Processing
SP  - 90
EP  - 93
PB  - Science Publishing Group
SN  - 2575-1530
UR  - https://doi.org/10.11648/j.ajmsp.20170206.13
AB  - CaCu3Ti4O12 (CCTO) is a novel material with high relative dielectric constant and low loss tangent, CCTO belongs to a family of oxides of the type ACu3Ti4O12 (A=Ca, Cd, Sr, Na, Th). CaCu3Ti4O12 was first reported by Subramanian et al., to have an unusually high dielectric constant (~10,000) at 1 kHz. It is well known that dielectric properties of CCTO are strongly dependent upon the processing conditions as well as on doping. Semi-wet route was used to synthesise samples of CaCu3Ti4O12 and Ca(1-3x/2)LaxCu3Ti4O12 (x=0.01). Analytical grade chemicals, Ca(NO3)2.4H2O, La(NO3)3.6H2O, Cu(NO3)2.3H2O, titanium dioxide and citric acid having purity better than 99.95% were used as starting materials. The formation of single-phase solid solutions was confirmed by the absence characteristic lines of constituent’s oxides in the XRD patterns. Dielectric measurement of undoped and La doped CCTO has been performed using four probe novocontrol set up (ZG4) in a wide range of temperature starting from the room temperature. With La doping in CCTO there is an increase in the value of dielectric constant in comparison to undoped CCTO.
VL  - 2
IS  - 6
ER  -

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