Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics

Yue Sun, Hanxing Liu, Hua Hao, Shujun Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

BaTiO3-based MLCC materials were limited for high temperature applications (temperature range up to 200°C), due to their low Curie temperatures. The addition of Na0.5Bi0.5TiO3(NBT) component in BaTiO3(BT) based ceramics was found to increase the Curie temperature, without sacrificing the dielectric constant. The Curie temperature was reported to increase from 125°C to 156°C with addition up to 10mol%, making it possible to satisfy the X8R or X9R criterions. In addition, the small amount of Nb2O5 dopant in the system leads to a diffused dielectric maxima and improved temperature stability. The NBT-BT with 2wt% Nb2O5 addition was found to exhibit a core-shell structure, while maintaining the dielectric constant at about 2500. To analyze the electrical microstructure variation, the obtained impedance data was fitted by a 4RC equivalent circuit, corresponding to the core, shell, grain boundary, and ceramic/electrode interface regions. All the electrical properties, including the capacitance, activation energy, and conductivity could be well explained by using this equivalent circuit.

Original languageEnglish (US)
Title of host publication2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479938605
DOIs
StatePublished - Jan 1 2014
Event2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014 - State College, United States
Duration: May 12 2014May 16 2014

Other

Other2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014
CountryUnited States
CityState College
Period5/12/145/16/14

Fingerprint

Curie temperature
Equivalent circuits
Permittivity
High temperature applications
Grain boundaries
Electric properties
Capacitance
Activation energy
Doping (additives)
Temperature
Microstructure
Electrodes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Sun, Y., Liu, H., Hao, H., & Zhang, S. (2014). Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics. In 2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014 [6923012] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISAF.2014.6923012
Sun, Yue ; Liu, Hanxing ; Hao, Hua ; Zhang, Shujun. / Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics. 2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014. Institute of Electrical and Electronics Engineers Inc., 2014.
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title = "Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics",
abstract = "BaTiO3-based MLCC materials were limited for high temperature applications (temperature range up to 200°C), due to their low Curie temperatures. The addition of Na0.5Bi0.5TiO3(NBT) component in BaTiO3(BT) based ceramics was found to increase the Curie temperature, without sacrificing the dielectric constant. The Curie temperature was reported to increase from 125°C to 156°C with addition up to 10mol{\%}, making it possible to satisfy the X8R or X9R criterions. In addition, the small amount of Nb2O5 dopant in the system leads to a diffused dielectric maxima and improved temperature stability. The NBT-BT with 2wt{\%} Nb2O5 addition was found to exhibit a core-shell structure, while maintaining the dielectric constant at about 2500. To analyze the electrical microstructure variation, the obtained impedance data was fitted by a 4RC equivalent circuit, corresponding to the core, shell, grain boundary, and ceramic/electrode interface regions. All the electrical properties, including the capacitance, activation energy, and conductivity could be well explained by using this equivalent circuit.",
author = "Yue Sun and Hanxing Liu and Hua Hao and Shujun Zhang",
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Sun, Y, Liu, H, Hao, H & Zhang, S 2014, Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics. in 2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014., 6923012, Institute of Electrical and Electronics Engineers Inc., 2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014, State College, United States, 5/12/14. https://doi.org/10.1109/ISAF.2014.6923012

Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics. / Sun, Yue; Liu, Hanxing; Hao, Hua; Zhang, Shujun.

2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 6923012.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics

AU - Sun, Yue

AU - Liu, Hanxing

AU - Hao, Hua

AU - Zhang, Shujun

PY - 2014/1/1

Y1 - 2014/1/1

N2 - BaTiO3-based MLCC materials were limited for high temperature applications (temperature range up to 200°C), due to their low Curie temperatures. The addition of Na0.5Bi0.5TiO3(NBT) component in BaTiO3(BT) based ceramics was found to increase the Curie temperature, without sacrificing the dielectric constant. The Curie temperature was reported to increase from 125°C to 156°C with addition up to 10mol%, making it possible to satisfy the X8R or X9R criterions. In addition, the small amount of Nb2O5 dopant in the system leads to a diffused dielectric maxima and improved temperature stability. The NBT-BT with 2wt% Nb2O5 addition was found to exhibit a core-shell structure, while maintaining the dielectric constant at about 2500. To analyze the electrical microstructure variation, the obtained impedance data was fitted by a 4RC equivalent circuit, corresponding to the core, shell, grain boundary, and ceramic/electrode interface regions. All the electrical properties, including the capacitance, activation energy, and conductivity could be well explained by using this equivalent circuit.

AB - BaTiO3-based MLCC materials were limited for high temperature applications (temperature range up to 200°C), due to their low Curie temperatures. The addition of Na0.5Bi0.5TiO3(NBT) component in BaTiO3(BT) based ceramics was found to increase the Curie temperature, without sacrificing the dielectric constant. The Curie temperature was reported to increase from 125°C to 156°C with addition up to 10mol%, making it possible to satisfy the X8R or X9R criterions. In addition, the small amount of Nb2O5 dopant in the system leads to a diffused dielectric maxima and improved temperature stability. The NBT-BT with 2wt% Nb2O5 addition was found to exhibit a core-shell structure, while maintaining the dielectric constant at about 2500. To analyze the electrical microstructure variation, the obtained impedance data was fitted by a 4RC equivalent circuit, corresponding to the core, shell, grain boundary, and ceramic/electrode interface regions. All the electrical properties, including the capacitance, activation energy, and conductivity could be well explained by using this equivalent circuit.

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M3 - Conference contribution

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PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Sun Y, Liu H, Hao H, Zhang S. Impedance analysis of Nb2O5 doped BaTiO3-Na0.5Bi0.5TiO3 ceramics. In 2014 Joint IEEE International Symposium on the Applications of Ferroelectric, International Workshop on Acoustic Transduction Materials and Devices and Workshop on Piezoresponse Force Microscopy, ISAF/IWATMD/PFM 2014. Institute of Electrical and Electronics Engineers Inc. 2014. 6923012 https://doi.org/10.1109/ISAF.2014.6923012