Relationship Between Thermal Expansion Coefficient and Ionic Conduction in Perovskite-Type Oxides

Taniguchi, Sachi; Aniya, Masaru

doi:10.1143/jpsjs.79sa.106

Cited by 9 publications

(7 citation statements)

References 18 publications

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“…4, the experimental values [5] of the thermal expansion coefficient (300-1000 • C) and the oxygen ionic conductivity σ O (800 • C, air) are shown as a function of the difference of ionicity. We can note that both, the TEC and the oxygen ionic conductivity decreases with f i , as found previously [6].…”

Section: the Calculated Thermal Expansion Coefficient Is Shown As Asupporting

confidence: 89%

“…However, the theoretical background of the relationship between the thermal expansion coefficient and the ionic conduction is not clear. Recently, we have explained the correlation between ionic conduction and thermal expansion in La 1-x Sr x Fe 1-y Co y O 3-δ from a chemical bond point of view [6]. In the present paper, the analysis has been extended to other perovskite oxides.…”

Section: Introductionmentioning

confidence: 93%

“…Recently, we have explained the correlation between ionic conduction and thermal expansion in some oxides with the composition La 1-x Sr x Fe 1-y Co y O 3-δ from a chemical bond point of view [6]. There it has been shown that the values of the thermal expansion coefficient and the oxygen ionic conductivity decrease with the difference in ionicity f i .…”

Section: the Calculated Thermal Expansion Coefficient Is Shown As Amentioning

confidence: 99%

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Relationship Between Thermal Expansion, Ionic Conduction and Ionicity in Perovskite-Type Oxides

Taniguchi

Aniya

2010

Integrated Ferroelectrics

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In complex perovskite-type oxides, which have been studied as cathode materials, the thermal expansion coefficient (TEC) increases with the increase in the oxygen ionic conductivity. The aim of the present study is to explain such a behavior from a chemical bond point of view. For the perovskite oxides expressed as A 1-x A x B 1-y B y O 3-δ and ABO 3 , the ionicity of A O and B O bonds and the thermal expansion coefficient were evaluated theoretically by using semiempirical methods. It is found that the thermal expansion coefficient and the oxygen ionic conductivity decrease with the increase in the difference of the ionicity between A O and B O bonds.

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Section: the Calculated Thermal Expansion Coefficient Is Shown As Asupporting

confidence: 89%

Section: Introductionmentioning

confidence: 93%

Section: the Calculated Thermal Expansion Coefficient Is Shown As Amentioning

confidence: 99%

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Relationship Between Thermal Expansion, Ionic Conduction and Ionicity in Perovskite-Type Oxides

Taniguchi

Aniya

2010

Integrated Ferroelectrics

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“…However, its explanation has not been given yet. Recently, the above relation has been studied from a chemical bond point of view [4,5]. There, it was shown that the ionic conductivity and the thermal expansion coefficient in A 1-x A′ x B 1-y B′ y O 3-δ compounds vary systematically with the difference of the ionicity between A-O and B-O bonds.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Model for the Relationship between Thermal Expansion and Ionic Conduction

Taniguchi

Aniya²

2011

IOP Conf. Ser.: Mater. Sci. Eng.

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In complex perovskite oxides, it has been reported that the thermal expansion coefficient increases with the increase in the oxygen ionic conductivity. However, its theoretical background has not been clarified yet. In the present study, a model to understand the relationship is presented. By analyzing the experimental data using the theoretical expression derived, microscopic quantities related to ionic transport has been obtained.

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“…where The relation between i f ∆ calculated based on the above expressions and some physical quantities of perovskite materials has been studied [12,16]. For instance, it has been found that the thermal expansion coefficient decreases with the increase of i f ∆ .…”

Section: Relationship Between the Potential Parameters Of The Cations...mentioning

confidence: 99%

Mapping of perovskite oxides in the localized vs itinerant electron diagram and its relation with the ionic conductivity

Taniguchi

Aniya

2012

Solid State Ionics

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Relationship Between Thermal Expansion Coefficient and Ionic Conduction in Perovskite-Type Oxides

Cited by 9 publications

References 18 publications

Relationship Between Thermal Expansion, Ionic Conduction and Ionicity in Perovskite-Type Oxides

Relationship Between Thermal Expansion, Ionic Conduction and Ionicity in Perovskite-Type Oxides

A Theoretical Model for the Relationship between Thermal Expansion and Ionic Conduction

Mapping of perovskite oxides in the localized vs itinerant electron diagram and its relation with the ionic conductivity

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