Effects of silver doping on ferroelectric SrBi 2Ta 2O 9

B. Sih; A. Jung; Z. G. Ye

doi:10.1063/1.1502206

Effects of silver doping on ferroelectric SrBi ₂Ta ₂O ₉

B. Sih
, A. Jung
, Z. G. Ye

Simon Fraser University

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Silver-doped SrBi ₂Ta ₂O ₉ (Ag:SBT) ceramics were synthesized by solid state reactions. The reaction mechanism has been deduced based on the crystal defect chemistry. It involves the diffusion of Ag ⁺ and O ^2- ions into the (Bi ₂O ₂) ²⁺ layers between the perovskite-like units to recover the bismuth and oxygen vacancies, respectively, which were inherently present in SBT ceramics due to the volatilization of Bi ₂O ₃ at high temperatures. The Ag:SBT samples have been characterized by a variety of techniques: x-ray diffraction, dielectric and ferroelectric measurements, and impedance spectroscopy. Ag doping is found to significantly affect the structural and physical properties of SBT, including lattice parameters, Curie temperature, bulk conductivity, activation energy, and ferroelectricity. These effects have been interpreted based on the model of the recovery of oxygen and bismuth vacancies upon Ag doping. The effects of Ag diffusion should be taken into account when using Ag as electrode materials for the characterization of the electric properties of SBT and related materials.

Original language	English
Pages (from-to)	3928-3935
Number of pages	8
Journal	Journal of Applied Physics
Volume	92
Issue number	7
DOIs	https://doi.org/10.1063/1.1502206
State	Published - 1 Oct 2002
Externally published	Yes

Access to Document

10.1063/1.1502206

Cite this

@article{fcfbf5ca220849829f24eaff13454cc2,

title = "Effects of silver doping on ferroelectric SrBi 2Ta 2O 9 ",

abstract = "Silver-doped SrBi 2Ta 2O 9 (Ag:SBT) ceramics were synthesized by solid state reactions. The reaction mechanism has been deduced based on the crystal defect chemistry. It involves the diffusion of Ag + and O 2- ions into the (Bi 2O 2) 2+ layers between the perovskite-like units to recover the bismuth and oxygen vacancies, respectively, which were inherently present in SBT ceramics due to the volatilization of Bi 2O 3 at high temperatures. The Ag:SBT samples have been characterized by a variety of techniques: x-ray diffraction, dielectric and ferroelectric measurements, and impedance spectroscopy. Ag doping is found to significantly affect the structural and physical properties of SBT, including lattice parameters, Curie temperature, bulk conductivity, activation energy, and ferroelectricity. These effects have been interpreted based on the model of the recovery of oxygen and bismuth vacancies upon Ag doping. The effects of Ag diffusion should be taken into account when using Ag as electrode materials for the characterization of the electric properties of SBT and related materials.",

author = "B. Sih and A. Jung and Ye, \{Z. G.\}",

year = "2002",

month = oct,

day = "1",

doi = "10.1063/1.1502206",

language = "英语",

volume = "92",

pages = "3928--3935",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "7",

}

TY - JOUR

T1 - Effects of silver doping on ferroelectric SrBi 2Ta 2O 9

AU - Sih, B.

AU - Jung, A.

AU - Ye, Z. G.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - Silver-doped SrBi 2Ta 2O 9 (Ag:SBT) ceramics were synthesized by solid state reactions. The reaction mechanism has been deduced based on the crystal defect chemistry. It involves the diffusion of Ag + and O 2- ions into the (Bi 2O 2) 2+ layers between the perovskite-like units to recover the bismuth and oxygen vacancies, respectively, which were inherently present in SBT ceramics due to the volatilization of Bi 2O 3 at high temperatures. The Ag:SBT samples have been characterized by a variety of techniques: x-ray diffraction, dielectric and ferroelectric measurements, and impedance spectroscopy. Ag doping is found to significantly affect the structural and physical properties of SBT, including lattice parameters, Curie temperature, bulk conductivity, activation energy, and ferroelectricity. These effects have been interpreted based on the model of the recovery of oxygen and bismuth vacancies upon Ag doping. The effects of Ag diffusion should be taken into account when using Ag as electrode materials for the characterization of the electric properties of SBT and related materials.

AB - Silver-doped SrBi 2Ta 2O 9 (Ag:SBT) ceramics were synthesized by solid state reactions. The reaction mechanism has been deduced based on the crystal defect chemistry. It involves the diffusion of Ag + and O 2- ions into the (Bi 2O 2) 2+ layers between the perovskite-like units to recover the bismuth and oxygen vacancies, respectively, which were inherently present in SBT ceramics due to the volatilization of Bi 2O 3 at high temperatures. The Ag:SBT samples have been characterized by a variety of techniques: x-ray diffraction, dielectric and ferroelectric measurements, and impedance spectroscopy. Ag doping is found to significantly affect the structural and physical properties of SBT, including lattice parameters, Curie temperature, bulk conductivity, activation energy, and ferroelectricity. These effects have been interpreted based on the model of the recovery of oxygen and bismuth vacancies upon Ag doping. The effects of Ag diffusion should be taken into account when using Ag as electrode materials for the characterization of the electric properties of SBT and related materials.

UR - https://www.scopus.com/pages/publications/84861453244

U2 - 10.1063/1.1502206

DO - 10.1063/1.1502206

M3 - 文章

AN - SCOPUS:84861453244

SN - 0021-8979

VL - 92

SP - 3928

EP - 3935

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

ER -

Effects of silver doping on ferroelectric SrBi ₂Ta ₂O ₉

Abstract

Access to Document

Other files and links

Fingerprint

Cite this