44 Citations (Scopus)

Abstract

The Ca(Zr1-xTix)O3 (CZT) solid solution system is a linear dielectric that is of interest for high-temperature power capacitor applications. This dielectric was synthesized by conventional solid-state processes and prototyped into single-layer CZT capacitors, which were fabricated with interdigitated electrodes cofired between dielectric layers ∼10-μm thick. The dielectric properties of these capacitors were extensively investigated as a function of Zr/Ti ratio on the CaZrO3 side of the solid solution. The electrostatic energy density and breakdown strength of the CZT capacitors were investigated by measuring polarization-electric field curves as a function of temperature from room temperature to 250°C. The Ca(Zr0.80Ti0.20)O 3 capacitors show high electrostatic energy density of 4 J/cm 3 at 250°C. Highly accelerated life testing (HALT) was also performed on these dielectrics, and we quantified the thermal stimulated depolarization current (TSDC) to access the major point defects in the CZT system.

Original languageEnglish (US)
Pages (from-to)1209-1213
Number of pages5
JournalJournal of the American Ceramic Society
Volume96
Issue number4
DOIs
StatePublished - Apr 1 2013

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Capacitors
Electrostatics
Solid solutions
Temperature
Depolarization
Point defects
Dielectric properties
Electric fields
Polarization
Electrodes
Testing

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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title = "High-energy density dielectrics and capacitors for elevated temperatures: Ca (Zr, Ti) O3",
abstract = "The Ca(Zr1-xTix)O3 (CZT) solid solution system is a linear dielectric that is of interest for high-temperature power capacitor applications. This dielectric was synthesized by conventional solid-state processes and prototyped into single-layer CZT capacitors, which were fabricated with interdigitated electrodes cofired between dielectric layers ∼10-μm thick. The dielectric properties of these capacitors were extensively investigated as a function of Zr/Ti ratio on the CaZrO3 side of the solid solution. The electrostatic energy density and breakdown strength of the CZT capacitors were investigated by measuring polarization-electric field curves as a function of temperature from room temperature to 250°C. The Ca(Zr0.80Ti0.20)O 3 capacitors show high electrostatic energy density of 4 J/cm 3 at 250°C. Highly accelerated life testing (HALT) was also performed on these dielectrics, and we quantified the thermal stimulated depolarization current (TSDC) to access the major point defects in the CZT system.",
author = "Haijoon Lee and Kim, {Jeong Ryeol} and Lanagan, {Michael T.} and Trolier-McKinstry, {Susan E.} and Randall, {Clive A.}",
year = "2013",
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doi = "10.1111/jace.12184",
language = "English (US)",
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pages = "1209--1213",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
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High-energy density dielectrics and capacitors for elevated temperatures : Ca (Zr, Ti) O3. / Lee, Haijoon; Kim, Jeong Ryeol; Lanagan, Michael T.; Trolier-McKinstry, Susan E.; Randall, Clive A.

In: Journal of the American Ceramic Society, Vol. 96, No. 4, 01.04.2013, p. 1209-1213.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-energy density dielectrics and capacitors for elevated temperatures

T2 - Ca (Zr, Ti) O3

AU - Lee, Haijoon

AU - Kim, Jeong Ryeol

AU - Lanagan, Michael T.

AU - Trolier-McKinstry, Susan E.

AU - Randall, Clive A.

PY - 2013/4/1

Y1 - 2013/4/1

N2 - The Ca(Zr1-xTix)O3 (CZT) solid solution system is a linear dielectric that is of interest for high-temperature power capacitor applications. This dielectric was synthesized by conventional solid-state processes and prototyped into single-layer CZT capacitors, which were fabricated with interdigitated electrodes cofired between dielectric layers ∼10-μm thick. The dielectric properties of these capacitors were extensively investigated as a function of Zr/Ti ratio on the CaZrO3 side of the solid solution. The electrostatic energy density and breakdown strength of the CZT capacitors were investigated by measuring polarization-electric field curves as a function of temperature from room temperature to 250°C. The Ca(Zr0.80Ti0.20)O 3 capacitors show high electrostatic energy density of 4 J/cm 3 at 250°C. Highly accelerated life testing (HALT) was also performed on these dielectrics, and we quantified the thermal stimulated depolarization current (TSDC) to access the major point defects in the CZT system.

AB - The Ca(Zr1-xTix)O3 (CZT) solid solution system is a linear dielectric that is of interest for high-temperature power capacitor applications. This dielectric was synthesized by conventional solid-state processes and prototyped into single-layer CZT capacitors, which were fabricated with interdigitated electrodes cofired between dielectric layers ∼10-μm thick. The dielectric properties of these capacitors were extensively investigated as a function of Zr/Ti ratio on the CaZrO3 side of the solid solution. The electrostatic energy density and breakdown strength of the CZT capacitors were investigated by measuring polarization-electric field curves as a function of temperature from room temperature to 250°C. The Ca(Zr0.80Ti0.20)O 3 capacitors show high electrostatic energy density of 4 J/cm 3 at 250°C. Highly accelerated life testing (HALT) was also performed on these dielectrics, and we quantified the thermal stimulated depolarization current (TSDC) to access the major point defects in the CZT system.

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