Piezoelectric and dielectric properties of Sn-doped (Na0.5K 0.5)NbO3 ceramics processed under low oxygen partial pressure atmosphere

Keisuke Kobayashi, Yutaka Doshida, Youichi Mizuno, Clive A. Randall

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sn-doped (Na0.5K0.5)NbO3 (Sn-NKN) ceramics fired under various oxygen partial pressure (pO2) conditions have been investigated and discussed in terms of bulk piezoelectric and dielectric properties. X-ray diffraction measurements and Rayleigh analysis indicate that the substitution site of the Sn cations depend on the pO2 atmosphere in the firing process. For pO2 higher than 1.0 ' 10%10 atm, Sn cations mainly substitute as Sn4+ at the B-site of perovskite NKN, whereas Sn2+ A-site substitution is favored under a low-pO2 atmosphere. Low-pO2 fired Sn-NKN ceramics exhibit higher relative permittivity, Curie temperature, and piezoelectric coefficient (d33). Sn 2+ at A-site acts as a donor and reduces the p-type carrier concentrations that result from an electronic compensation of metal vacancies created through the high volatility of Na and K suboxides. The higher piezoelectricity and resistivity in low-pO2 fired Sn-NKN ceramics make this material suitable for base-metal cofired devices such as Ni-innerelectrode multilayer capacitors and actuators.

Original languageEnglish (US)
Article number011501
JournalJapanese Journal of Applied Physics
Volume53
Issue number1
DOIs
StatePublished - Jan 1 2014

Fingerprint

Partial pressure
Dielectric properties
partial pressure
dielectric properties
Substitution reactions
Positive ions
ceramics
substitutes
atmospheres
Oxygen
Piezoelectricity
oxygen
Curie temperature
Metals
Perovskite
Vacancies
Carrier concentration
cations
Multilayers
lower atmosphere

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

@article{bc4ddec3f3574f57a79d290cbd7e372e,
title = "Piezoelectric and dielectric properties of Sn-doped (Na0.5K 0.5)NbO3 ceramics processed under low oxygen partial pressure atmosphere",
abstract = "Sn-doped (Na0.5K0.5)NbO3 (Sn-NKN) ceramics fired under various oxygen partial pressure (pO2) conditions have been investigated and discussed in terms of bulk piezoelectric and dielectric properties. X-ray diffraction measurements and Rayleigh analysis indicate that the substitution site of the Sn cations depend on the pO2 atmosphere in the firing process. For pO2 higher than 1.0 ' 10{\%}10 atm, Sn cations mainly substitute as Sn4+ at the B-site of perovskite NKN, whereas Sn2+ A-site substitution is favored under a low-pO2 atmosphere. Low-pO2 fired Sn-NKN ceramics exhibit higher relative permittivity, Curie temperature, and piezoelectric coefficient (d33). Sn 2+ at A-site acts as a donor and reduces the p-type carrier concentrations that result from an electronic compensation of metal vacancies created through the high volatility of Na and K suboxides. The higher piezoelectricity and resistivity in low-pO2 fired Sn-NKN ceramics make this material suitable for base-metal cofired devices such as Ni-innerelectrode multilayer capacitors and actuators.",
author = "Keisuke Kobayashi and Yutaka Doshida and Youichi Mizuno and Randall, {Clive A.}",
year = "2014",
month = "1",
day = "1",
doi = "10.7567/JJAP.53.011501",
language = "English (US)",
volume = "53",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "1",

}

Piezoelectric and dielectric properties of Sn-doped (Na0.5K 0.5)NbO3 ceramics processed under low oxygen partial pressure atmosphere. / Kobayashi, Keisuke; Doshida, Yutaka; Mizuno, Youichi; Randall, Clive A.

In: Japanese Journal of Applied Physics, Vol. 53, No. 1, 011501, 01.01.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Piezoelectric and dielectric properties of Sn-doped (Na0.5K 0.5)NbO3 ceramics processed under low oxygen partial pressure atmosphere

AU - Kobayashi, Keisuke

AU - Doshida, Yutaka

AU - Mizuno, Youichi

AU - Randall, Clive A.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Sn-doped (Na0.5K0.5)NbO3 (Sn-NKN) ceramics fired under various oxygen partial pressure (pO2) conditions have been investigated and discussed in terms of bulk piezoelectric and dielectric properties. X-ray diffraction measurements and Rayleigh analysis indicate that the substitution site of the Sn cations depend on the pO2 atmosphere in the firing process. For pO2 higher than 1.0 ' 10%10 atm, Sn cations mainly substitute as Sn4+ at the B-site of perovskite NKN, whereas Sn2+ A-site substitution is favored under a low-pO2 atmosphere. Low-pO2 fired Sn-NKN ceramics exhibit higher relative permittivity, Curie temperature, and piezoelectric coefficient (d33). Sn 2+ at A-site acts as a donor and reduces the p-type carrier concentrations that result from an electronic compensation of metal vacancies created through the high volatility of Na and K suboxides. The higher piezoelectricity and resistivity in low-pO2 fired Sn-NKN ceramics make this material suitable for base-metal cofired devices such as Ni-innerelectrode multilayer capacitors and actuators.

AB - Sn-doped (Na0.5K0.5)NbO3 (Sn-NKN) ceramics fired under various oxygen partial pressure (pO2) conditions have been investigated and discussed in terms of bulk piezoelectric and dielectric properties. X-ray diffraction measurements and Rayleigh analysis indicate that the substitution site of the Sn cations depend on the pO2 atmosphere in the firing process. For pO2 higher than 1.0 ' 10%10 atm, Sn cations mainly substitute as Sn4+ at the B-site of perovskite NKN, whereas Sn2+ A-site substitution is favored under a low-pO2 atmosphere. Low-pO2 fired Sn-NKN ceramics exhibit higher relative permittivity, Curie temperature, and piezoelectric coefficient (d33). Sn 2+ at A-site acts as a donor and reduces the p-type carrier concentrations that result from an electronic compensation of metal vacancies created through the high volatility of Na and K suboxides. The higher piezoelectricity and resistivity in low-pO2 fired Sn-NKN ceramics make this material suitable for base-metal cofired devices such as Ni-innerelectrode multilayer capacitors and actuators.

UR - http://www.scopus.com/inward/record.url?scp=84892388153&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892388153&partnerID=8YFLogxK

U2 - 10.7567/JJAP.53.011501

DO - 10.7567/JJAP.53.011501

M3 - Article

AN - SCOPUS:84892388153

VL - 53

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 1

M1 - 011501

ER -