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Thermal conductivity and thermal diffusivity of selected oxide single crystals

Published online by Cambridge University Press:  26 November 2012

A. Stanimirovic ,
N. M. Balzaretti ,
A. Feldman  and
J. E. Graebner
A. Stanimirovic
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8521
N. M. Balzaretti
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8521
A. Feldman
Affiliation:
National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8521
J. E. Graebner
Affiliation:
Bell Labs, Lucent Technologies, Murray Hill, New Jersey 07974
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Abstract

Values for the thermal conductivity κ and the thermal diffusivity D of four oxide single crystals were obtained. Near room temperature, the values for κ (W cm−1 K−1) and D (cm2 s−1) are as follows: LaAlO3, κ = 0.115, D = 0.0446; NdGaO3, κ = 0.068, D = 0.0197 for one structural orientation, and κ = 0.059, D = 0.0195 for an orthogonal orientation; (LaAlO3)0.3–SrAl0.5Ta0.5O3, κ = 0.051, D = 0.0133; and, ScAlMgO4, κ = 0.062, D = 0.0229. The relative standard uncertainties in these values are ±10% (1 σ). These values allowed us to calculate the specific heat of the materials. The thermal conductivity was measured by a dc heated bar method, and the thermal diffusivity was measured by a modification of Ångström's method.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 3 , March 2001 , pp. 678 - 682
Copyright
Copyright © Materials Research Society 2001

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References

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