Complex-impedance spectra of 0.2[(Li2O)1-x-(Na2O)x]-0.8B2O3 mixed-alkali glasses

Shinya Mishina; Junichi Kawamura; Mitsuo Shimoji

doi:10.1016/0167-2738(87)90011-7

Complex-impedance spectra of 0.2[(Li₂O)_1-x^-(Na₂O)_x]-0.8B₂O₃ mixed-alkali glasses

Shinya Mishina, Junichi Kawamura, Mitsuo Shimoji

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

7 Citations (Scopus)

Abstract

Complex impedance spectra Z^{{star, open}} (ω) of 0.2[(Li₂O)_1-x-(Na₂O)_x]-0.8(B₂O₃) (x=0 to 1) glasses were measured in the frequency range from 5 Hz to 500 kHz. The conductivity relaxation time τ_M obtained from electric modulus spectra shows remarkable mixed alkali effects as in the case of d.c. conductivity. The use of the usual CPE (constant phase element) in the complex non-linear least square fitting technique was found insufficient to express the observed impedance spectra for mixed-alkali glasses. The present data can be well represented by using the following two-parameter equation: Z^{{star, open}}[ω]= Z[0] [1+(iωτ_c)ⁿ]^m (0<n≦, 0<m). For mixed alkali glasses, deviations of parameters m and n from unity are much larger than those in single alkali ones. This suggests that the distribution of relaxation times in considerably enhanced in mixed alkali glasses.

Original language	English
Pages (from-to)	323-329
Number of pages	7
Journal	Solid State Ionics
Volume	23
Issue number	4
DOIs	https://doi.org/10.1016/0167-2738(87)90011-7
Publication status	Published - 1987 May
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{7e3e3a002c1f4397bcdd97df11ecba4e,

title = "Complex-impedance spectra of 0.2[(Li2O)1-x-(Na2O)x]-0.8B2O3 mixed-alkali glasses",

abstract = "Complex impedance spectra Z{star, open} (ω) of 0.2[(Li2O)1-x-(Na2O)x]-0.8(B2O3) (x=0 to 1) glasses were measured in the frequency range from 5 Hz to 500 kHz. The conductivity relaxation time τM obtained from electric modulus spectra shows remarkable mixed alkali effects as in the case of d.c. conductivity. The use of the usual CPE (constant phase element) in the complex non-linear least square fitting technique was found insufficient to express the observed impedance spectra for mixed-alkali glasses. The present data can be well represented by using the following two-parameter equation: Z{star, open}[ω]= Z[0] [1+(iωτc)n]m (0",

author = "Shinya Mishina and Junichi Kawamura and Mitsuo Shimoji",

note = "Funding Information: The authors thank the Computer Center of Hokkaido University for the use of the HITAC M-230H computer and the library program SALS written by T.Nakagawa and Y.Oyanagi. The authors express their gratitude to Professor T.Yokogawa and Dr.A.Maekawa for their helpful discussion and their advises on the sample preparation. This research was partly supported by Scientific Research Grants from the Ministry of Education of Japan (5739001,58124008).",

year = "1987",

month = may,

doi = "10.1016/0167-2738(87)90011-7",

language = "English",

volume = "23",

pages = "323--329",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "4",

}

TY - JOUR

T1 - Complex-impedance spectra of 0.2[(Li2O)1-x-(Na2O)x]-0.8B2O3 mixed-alkali glasses

AU - Mishina, Shinya

AU - Kawamura, Junichi

AU - Shimoji, Mitsuo

N1 - Funding Information: The authors thank the Computer Center of Hokkaido University for the use of the HITAC M-230H computer and the library program SALS written by T.Nakagawa and Y.Oyanagi. The authors express their gratitude to Professor T.Yokogawa and Dr.A.Maekawa for their helpful discussion and their advises on the sample preparation. This research was partly supported by Scientific Research Grants from the Ministry of Education of Japan (5739001,58124008).

PY - 1987/5

Y1 - 1987/5

N2 - Complex impedance spectra Z{star, open} (ω) of 0.2[(Li2O)1-x-(Na2O)x]-0.8(B2O3) (x=0 to 1) glasses were measured in the frequency range from 5 Hz to 500 kHz. The conductivity relaxation time τM obtained from electric modulus spectra shows remarkable mixed alkali effects as in the case of d.c. conductivity. The use of the usual CPE (constant phase element) in the complex non-linear least square fitting technique was found insufficient to express the observed impedance spectra for mixed-alkali glasses. The present data can be well represented by using the following two-parameter equation: Z{star, open}[ω]= Z[0] [1+(iωτc)n]m (0

AB - Complex impedance spectra Z{star, open} (ω) of 0.2[(Li2O)1-x-(Na2O)x]-0.8(B2O3) (x=0 to 1) glasses were measured in the frequency range from 5 Hz to 500 kHz. The conductivity relaxation time τM obtained from electric modulus spectra shows remarkable mixed alkali effects as in the case of d.c. conductivity. The use of the usual CPE (constant phase element) in the complex non-linear least square fitting technique was found insufficient to express the observed impedance spectra for mixed-alkali glasses. The present data can be well represented by using the following two-parameter equation: Z{star, open}[ω]= Z[0] [1+(iωτc)n]m (0

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U2 - 10.1016/0167-2738(87)90011-7

DO - 10.1016/0167-2738(87)90011-7

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AN - SCOPUS:0023345694

VL - 23

SP - 323

EP - 329

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 4

ER -

Complex-impedance spectra of 0.2[(Li₂O)_1-x^-(Na₂O)_x]-0.8B₂O₃ mixed-alkali glasses

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