Publication: Anisotropic Thermal Diffusivity and Conductivity in La-Doped Strontium Niobate Sr2Nb2O7
Date
2010
Published Version
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley-Blackwell
The Harvard community has made this article openly available. Please share how this access benefits you.
Citation
Sparks, Taylor D., Paul A. Fuierer, and David R. Clarke. 2010. Anisotropic thermal diffusivity and conductivity in La-doped strontium niobate Sr2Nb2O7. Journal of the American Ceramic Society 93(4): 1136-1141.
Research Data
Abstract
The thermal diffusivity of the La-doped layered perovskite Sr2Nb2O7 parallel and perpendicular to the perovskite layers is reported from room temperature up to 1000°C. The anisotropy persists through an incommensurate-normal ferroelectric phase transformation at 215°C and up to 1000°C, the maximum temperature of our measurements. The thermal conductivity perpendicular to the perovskite layers, derived from the diffusivity in the same direction, calculated using the density and measured heat capacity, has a constant value of 1.05±0.05 W/mK up to 1000°C. Possible explanations for the low thermal conductivity and anisotropy are described.
Description
Keywords
Terms of Use
Metadata Only