Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies

João Elias Figuereido Soares Rodrigues; Carlos William de Araujo Paschoal; Eder Nascimento Silva; Kathryn A. Mince; Michael W. Lufaso

doi:10.1016/j.materresbull.2011.11.036

Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies

João Elias Figuereido Soares Rodrigues, Carlos William de Araujo Paschoal, Eder Nascimento Silva, Kathryn A. Mince, Michael W. Lufaso

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

Abstract

Impedance spectroscopy analysis of the dielectric properties of a Ba2BiTaO6 ceramic was performed in the temperature range from room temperature to 500 K. The sample was prepared using conventional solid state synthesis under air and the X-ray diffraction shows the presence of Ba5Ta4O15 as a minor secondary phase (0.09%). The impedance data clearly show contributions of the grain and grain boundary. The results indicate that the conduction in Ba2BiTaO6 is due to hopping of oxygen vacancies and that the impurities not influence the conduction mechanism.

Original language	American English
Pages (from-to)	878-882
Number of pages	5
Journal	Materials Research Bulletin
Volume	47
Issue number	3
DOIs	https://doi.org/10.1016/j.materresbull.2011.11.036
State	Published - Mar 2012

Keywords

Ceramics
Impedance spectroscopy
Dielectric properties
Ionic conductivity

Disciplines

Ceramic Materials
Analytical Chemistry
Materials Science and Engineering

Access to Document

10.1016/j.materresbull.2011.11.036License: Unspecified

Cite this

@article{c7667005191b482383257dd899fd37f1,

title = "Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies",

abstract = "Impedance spectroscopy analysis of the dielectric properties of a Ba2BiTaO6 ceramic was performed in the temperature range from room temperature to 500 K. The sample was prepared using conventional solid state synthesis under air and the X-ray diffraction shows the presence of Ba5Ta4O15 as a minor secondary phase (0.09%). The impedance data clearly show contributions of the grain and grain boundary. The results indicate that the conduction in Ba2BiTaO6 is due to hopping of oxygen vacancies and that the impurities not influence the conduction mechanism.",

keywords = "Ceramics, Impedance spectroscopy, Dielectric properties, Ionic conductivity",

author = "Rodrigues, {Jo{\~a}o Elias Figuereido Soares} and {de Araujo Paschoal}, {Carlos William} and Silva, {Eder Nascimento} and Mince, {Kathryn A.} and Lufaso, {Michael W.}",

note = "Rodrigues, J. E. F. S., Paschoal, C. W. de A., Silva, E. N., Mince, K. A., & Lufaso, M. W. (2012). Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies. Materials Research Bulletin, 47(3), 878–882. https://doi.org/10.1016/j.materresbull.2011.11.036",

year = "2012",

month = mar,

doi = "10.1016/j.materresbull.2011.11.036",

language = "American English",

volume = "47",

pages = "878--882",

journal = "Materials Research Bulletin",

issn = "0025-5408",

number = "3",

}

TY - JOUR

T1 - Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies

AU - Rodrigues, João Elias Figuereido Soares

AU - de Araujo Paschoal, Carlos William

AU - Silva, Eder Nascimento

AU - Mince, Kathryn A.

AU - Lufaso, Michael W.

N1 - Rodrigues, J. E. F. S., Paschoal, C. W. de A., Silva, E. N., Mince, K. A., & Lufaso, M. W. (2012). Relaxations in Ba2BiTaO6 ceramics investigated by impedance and electric modulus spectroscopies. Materials Research Bulletin, 47(3), 878–882. https://doi.org/10.1016/j.materresbull.2011.11.036

PY - 2012/3

Y1 - 2012/3

N2 - Impedance spectroscopy analysis of the dielectric properties of a Ba2BiTaO6 ceramic was performed in the temperature range from room temperature to 500 K. The sample was prepared using conventional solid state synthesis under air and the X-ray diffraction shows the presence of Ba5Ta4O15 as a minor secondary phase (0.09%). The impedance data clearly show contributions of the grain and grain boundary. The results indicate that the conduction in Ba2BiTaO6 is due to hopping of oxygen vacancies and that the impurities not influence the conduction mechanism.

AB - Impedance spectroscopy analysis of the dielectric properties of a Ba2BiTaO6 ceramic was performed in the temperature range from room temperature to 500 K. The sample was prepared using conventional solid state synthesis under air and the X-ray diffraction shows the presence of Ba5Ta4O15 as a minor secondary phase (0.09%). The impedance data clearly show contributions of the grain and grain boundary. The results indicate that the conduction in Ba2BiTaO6 is due to hopping of oxygen vacancies and that the impurities not influence the conduction mechanism.

KW - Ceramics

KW - Impedance spectroscopy

KW - Dielectric properties

KW - Ionic conductivity

U2 - 10.1016/j.materresbull.2011.11.036

DO - 10.1016/j.materresbull.2011.11.036

M3 - Article

SN - 0025-5408

VL - 47

SP - 878

EP - 882

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 3

ER -