Dielectric relaxation in Bi2O3-ZnO-Nb2O5 cubic pyrochlore

Juan C. Nino; Michael T. Lanagan; Clive A. Randall

doi:10.1063/1.1357468

Dielectric relaxation in Bi₂O₃-ZnO-Nb₂O₅ cubic pyrochlore

Juan C. Nino, Michael T. Lanagan, Clive A. Randall

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

183 Scopus citations

Abstract

Frequency dispersion associated with dielectric relaxation phenomena in polycrystalline cubic pyrochlore with normal composition (Bi_1.5Zn_0.5)(Zn_0.5Nb_1.5)O ₇ is analyzed. Measurements at cryogenic temperatures and high frequencies reveal a broad distribution of relaxation times. The associated dielectric loss data can be modeled with a function convoluting the Vogel-Fulcher law and a Gaussian distribution. This function, dependent only on measuring frequency and temperature, describes exceptionally well the phenomena observed over a frequency range covering seven decades and over 300 K.

Original language	English (US)
Pages (from-to)	4512-4516
Number of pages	5
Journal	Journal of Applied Physics
Volume	89
Issue number	8
DOIs	https://doi.org/10.1063/1.1357468
State	Published - Apr 15 2001

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.1357468

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title = "Dielectric relaxation in Bi2O3-ZnO-Nb2O5 cubic pyrochlore",

abstract = "Frequency dispersion associated with dielectric relaxation phenomena in polycrystalline cubic pyrochlore with normal composition (Bi1.5Zn0.5)(Zn0.5Nb1.5)O 7 is analyzed. Measurements at cryogenic temperatures and high frequencies reveal a broad distribution of relaxation times. The associated dielectric loss data can be modeled with a function convoluting the Vogel-Fulcher law and a Gaussian distribution. This function, dependent only on measuring frequency and temperature, describes exceptionally well the phenomena observed over a frequency range covering seven decades and over 300 K.",

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AU - Lanagan, Michael T.

AU - Randall, Clive A.

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Y1 - 2001/4/15

N2 - Frequency dispersion associated with dielectric relaxation phenomena in polycrystalline cubic pyrochlore with normal composition (Bi1.5Zn0.5)(Zn0.5Nb1.5)O 7 is analyzed. Measurements at cryogenic temperatures and high frequencies reveal a broad distribution of relaxation times. The associated dielectric loss data can be modeled with a function convoluting the Vogel-Fulcher law and a Gaussian distribution. This function, dependent only on measuring frequency and temperature, describes exceptionally well the phenomena observed over a frequency range covering seven decades and over 300 K.

AB - Frequency dispersion associated with dielectric relaxation phenomena in polycrystalline cubic pyrochlore with normal composition (Bi1.5Zn0.5)(Zn0.5Nb1.5)O 7 is analyzed. Measurements at cryogenic temperatures and high frequencies reveal a broad distribution of relaxation times. The associated dielectric loss data can be modeled with a function convoluting the Vogel-Fulcher law and a Gaussian distribution. This function, dependent only on measuring frequency and temperature, describes exceptionally well the phenomena observed over a frequency range covering seven decades and over 300 K.

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Dielectric relaxation in Bi₂O₃-ZnO-Nb₂O₅ cubic pyrochlore

Abstract

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