Thermal Conductivity and Thermal Diffusivity of Selected Oxide Single Crystals

Published

March 1, 2001

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-SrAl_0.5Ta_0.5O₃, 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

Pub Type

Journals

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 April 26, 2024)