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Thermal Conductivity and Thermal Diffusivity of Selected Oxide Single Crystals

Published

Author(s)

A Stanimirovic, N M. Balzaretti, A Feldman, J Graebner

Abstract

Values for the thermal conductivity k and the thermal diffusivity D of four oxide single crystals have been obtained. Near room temperature the values are: LaAlO3, k = 0.115 Wcm-1K-1, D = 0.0446 cm2s-1., NdGaO3, k = 0.068 Wcm-1K-1, D=0.0197 cm2s-1 for one structural orientation, and k = 0.059 Wcm-1K-1, D=0.0195 cm2s-1 for an orthogonal orientation; (LaAlO3)0.3-SrAl0.5Ta0.5O3, k=0.051 W cm-1K-1, D=0.0133 cm2 s-1 , and, ScAlMgO4, k=0.062 W cm-1K-1, D=0.229 cm2 s-1. The uncertainties in these values are 10%. These values allow us to calculate the specific heat of the materials. The thermal conductivity was measured by a dc heated bar method and the thermal diffusivity by a modification of Angstrom's method.
Citation
Journal of Materials Research
Volume
16
Issue
No. 3

Keywords

Angstrom's method, crystals, thermal conductivity, thermal diffusivity

Citation

Stanimirovic, A. , Balzaretti, N. , Feldman, A. and Graebner, J. (2001), Thermal Conductivity and Thermal Diffusivity of Selected Oxide Single Crystals, Journal of Materials Research (Accessed February 25, 2024)
Created February 28, 2001, Updated October 12, 2021