Large breakdown field and dielectric performance of CaCu3Ti 4O12 ceramics modified by Al2O3

Ran Jia; Xian Tang; Jianying Li; Xuetong Zhao

doi:10.1109/ICSD.2013.6619878

Large breakdown field and dielectric performance of CaCu₃Ti ₄O₁₂ ceramics modified by Al₂O₃

Ran Jia
, Xian Tang
, Jianying Li
, Xuetong Zhao

School of Electrical Engineering

Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

CaCu₃Ti₄O₁₂ ceramics samples with varied Al₂O₃ additions have been prepared by a dispersion-precipitation-sintering method. The ceramics with nominal addition of 8 wt% Al₂O₃ sintered at 1100 ^oC for 4 hours shows a breakdown electric field E_b of 21 kV/cm, compared with reported values of 1.0∼2.0 kV/cm. Three energy levels of dielectric relaxation, two of which do not vary with either second phase addition or sintering condition, are found. The nearly constant levels of ∼0.13 eV and ∼0.33 eV are considered to relate to bulk and domain boundary relaxations. Another level varied from 0.61 to 0.84 eV is suggested to be Maxwell-Wagner relaxation of grain boundary, which correlates well with breakdown electric field E_b. It was proposed that the enhanced breakdown field is attributed to higher energy level of grain boundary relaxation and CuAl ₂O₄ aggregation in the intergranular region.

Original language	English
Title of host publication	ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
Pages	1087-1090
Number of pages	4
DOIs	https://doi.org/10.1109/ICSD.2013.6619878
State	Published - 2013
Event	ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics - Bologna, Italy Duration: 30 Jun 2013 → 4 Jul 2013

Publication series

Name	Proceedings of IEEE International Conference on Solid Dielectrics, ICSD
ISSN (Print)	1553-5282
ISSN (Electronic)	2159-1687

Conference

Conference	ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
Country/Territory	Italy
City	Bologna
Period	30/06/13 → 4/07/13

Keywords

CaCuTiO ceramics
becond phase
bielectric performance
breakdown field

Access to Document

10.1109/ICSD.2013.6619878

Cite this

Jia, R., Tang, X., Li, J., & Zhao, X. (2013). Large breakdown field and dielectric performance of CaCu₃Ti ₄O₁₂ ceramics modified by Al₂O₃. In ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics (pp. 1087-1090). Article 6619878 (Proceedings of IEEE International Conference on Solid Dielectrics, ICSD). https://doi.org/10.1109/ICSD.2013.6619878

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title = "Large breakdown field and dielectric performance of CaCu3Ti 4O12 ceramics modified by Al2O3",

abstract = "CaCu3Ti4O12 ceramics samples with varied Al2O3 additions have been prepared by a dispersion-precipitation-sintering method. The ceramics with nominal addition of 8 wt\% Al2O3 sintered at 1100 oC for 4 hours shows a breakdown electric field Eb of 21 kV/cm, compared with reported values of 1.0∼2.0 kV/cm. Three energy levels of dielectric relaxation, two of which do not vary with either second phase addition or sintering condition, are found. The nearly constant levels of ∼0.13 eV and ∼0.33 eV are considered to relate to bulk and domain boundary relaxations. Another level varied from 0.61 to 0.84 eV is suggested to be Maxwell-Wagner relaxation of grain boundary, which correlates well with breakdown electric field Eb. It was proposed that the enhanced breakdown field is attributed to higher energy level of grain boundary relaxation and CuAl 2O4 aggregation in the intergranular region.",

keywords = "CaCuTiO ceramics, becond phase, bielectric performance, breakdown field",

author = "Ran Jia and Xian Tang and Jianying Li and Xuetong Zhao",

year = "2013",

doi = "10.1109/ICSD.2013.6619878",

language = "英语",

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series = "Proceedings of IEEE International Conference on Solid Dielectrics, ICSD",

pages = "1087--1090",

booktitle = "ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics",

note = "ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics ; Conference date: 30-06-2013 Through 04-07-2013",

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Jia, R, Tang, X, Li, J & Zhao, X 2013, Large breakdown field and dielectric performance of CaCu₃Ti ₄O₁₂ ceramics modified by Al₂O₃. in ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics., 6619878, Proceedings of IEEE International Conference on Solid Dielectrics, ICSD, pp. 1087-1090, ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics, Bologna, Italy, 30/06/13. https://doi.org/10.1109/ICSD.2013.6619878

Large breakdown field and dielectric performance of CaCu₃Ti ₄O₁₂ ceramics modified by Al₂O₃. / Jia, Ran; Tang, Xian; Li, Jianying et al.
ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics. 2013. p. 1087-1090 6619878 (Proceedings of IEEE International Conference on Solid Dielectrics, ICSD).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - CaCu3Ti4O12 ceramics samples with varied Al2O3 additions have been prepared by a dispersion-precipitation-sintering method. The ceramics with nominal addition of 8 wt% Al2O3 sintered at 1100 oC for 4 hours shows a breakdown electric field Eb of 21 kV/cm, compared with reported values of 1.0∼2.0 kV/cm. Three energy levels of dielectric relaxation, two of which do not vary with either second phase addition or sintering condition, are found. The nearly constant levels of ∼0.13 eV and ∼0.33 eV are considered to relate to bulk and domain boundary relaxations. Another level varied from 0.61 to 0.84 eV is suggested to be Maxwell-Wagner relaxation of grain boundary, which correlates well with breakdown electric field Eb. It was proposed that the enhanced breakdown field is attributed to higher energy level of grain boundary relaxation and CuAl 2O4 aggregation in the intergranular region.

AB - CaCu3Ti4O12 ceramics samples with varied Al2O3 additions have been prepared by a dispersion-precipitation-sintering method. The ceramics with nominal addition of 8 wt% Al2O3 sintered at 1100 oC for 4 hours shows a breakdown electric field Eb of 21 kV/cm, compared with reported values of 1.0∼2.0 kV/cm. Three energy levels of dielectric relaxation, two of which do not vary with either second phase addition or sintering condition, are found. The nearly constant levels of ∼0.13 eV and ∼0.33 eV are considered to relate to bulk and domain boundary relaxations. Another level varied from 0.61 to 0.84 eV is suggested to be Maxwell-Wagner relaxation of grain boundary, which correlates well with breakdown electric field Eb. It was proposed that the enhanced breakdown field is attributed to higher energy level of grain boundary relaxation and CuAl 2O4 aggregation in the intergranular region.

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