Thermal conduction behavior in polycrystalline (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic

Dean-Mo LIu; Chien Jen Chen; Li Jiaun Lin

doi:10.1063/1.356050

Thermal conduction behavior in polycrystalline (Sr _1-x ,K _2x )Zr ₄ (PO ₄ ) ₆ ceramic

Dean-Mo LIu^*, Chien Jen Chen, Li Jiaun Lin

^*Corresponding author for this work

Department of Materials Science and Engineering

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

13 Scopus citations

Abstract

Single-phase (Sr _1-x ,K _2x )Zr ₄ (PO ₄ ) ₆ ceramic (with x=0.0-0.8) demonstrated values of thermal conductivity decrease with increasing potassium content to a minimum value at x=0.5, which suggests a maximum content of lattice defect, i.e., oxygen vacancy, at this composition. The thermal conductivity of the ceramic then increased with further increase of potassium. The thermal conduction in (Sr _1-x ,K _2x )Zr ₄ (PO ₄ ) ₆ ceramic (at x=0.5) appears to exhibit a strongly lattice-defect dependence with a calculated phonon mean free path of approximately 3.04 Å, rather than a phonon-phonon dependence as observed in a number of dielectric materials. A linear relationship of the thermal conductivity in terms of porosity with temperature up to 600°C has been correlated and can be simply expressed as K=K ₀ (1-p) regardless of the influence of emissivity factor.

Original language	English
Pages (from-to)	3765-3768
Number of pages	4
Journal	Journal of Applied Physics
Volume	75
Issue number	8
DOIs	https://doi.org/10.1063/1.356050
State	Published - 1 Dec 1994

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title = "Thermal conduction behavior in polycrystalline (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic",

abstract = " Single-phase (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (with x=0.0-0.8) demonstrated values of thermal conductivity decrease with increasing potassium content to a minimum value at x=0.5, which suggests a maximum content of lattice defect, i.e., oxygen vacancy, at this composition. The thermal conductivity of the ceramic then increased with further increase of potassium. The thermal conduction in (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (at x=0.5) appears to exhibit a strongly lattice-defect dependence with a calculated phonon mean free path of approximately 3.04 {\AA}, rather than a phonon-phonon dependence as observed in a number of dielectric materials. A linear relationship of the thermal conductivity in terms of porosity with temperature up to 600°C has been correlated and can be simply expressed as K=K 0 (1-p) regardless of the influence of emissivity factor. ",

author = "Dean-Mo LIu and Chen, {Chien Jen} and Lin, {Li Jiaun}",

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AU - LIu, Dean-Mo

AU - Chen, Chien Jen

AU - Lin, Li Jiaun

PY - 1994/12/1

Y1 - 1994/12/1

N2 - Single-phase (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (with x=0.0-0.8) demonstrated values of thermal conductivity decrease with increasing potassium content to a minimum value at x=0.5, which suggests a maximum content of lattice defect, i.e., oxygen vacancy, at this composition. The thermal conductivity of the ceramic then increased with further increase of potassium. The thermal conduction in (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (at x=0.5) appears to exhibit a strongly lattice-defect dependence with a calculated phonon mean free path of approximately 3.04 Å, rather than a phonon-phonon dependence as observed in a number of dielectric materials. A linear relationship of the thermal conductivity in terms of porosity with temperature up to 600°C has been correlated and can be simply expressed as K=K 0 (1-p) regardless of the influence of emissivity factor.

AB - Single-phase (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (with x=0.0-0.8) demonstrated values of thermal conductivity decrease with increasing potassium content to a minimum value at x=0.5, which suggests a maximum content of lattice defect, i.e., oxygen vacancy, at this composition. The thermal conductivity of the ceramic then increased with further increase of potassium. The thermal conduction in (Sr 1-x ,K 2x )Zr 4 (PO 4 ) 6 ceramic (at x=0.5) appears to exhibit a strongly lattice-defect dependence with a calculated phonon mean free path of approximately 3.04 Å, rather than a phonon-phonon dependence as observed in a number of dielectric materials. A linear relationship of the thermal conductivity in terms of porosity with temperature up to 600°C has been correlated and can be simply expressed as K=K 0 (1-p) regardless of the influence of emissivity factor.

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Thermal conduction behavior in polycrystalline (Sr _1-x ,K _2x )Zr ₄ (PO ₄ ) ₆ ceramic

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