Open AccessThe studies of thermal conductivity in GdVO4, YVO4, and Y3Al5O12measured by quasi-one-dimensional flash method
Author(s) -
Yoichi Sato,
Takunori Taira
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.010528
Subject(s) - thermal conductivity , materials science , optics , thermal diffusivity , doping , thermal , conductivity , laser flash analysis , radiation , diffusion , analytical chemistry (journal) , thermodynamics , composite material , optoelectronics , chemistry , physics , chromatography
We have measured thermal conductivity of GdVO(4), YVO(4), and Y(3)Al(5)O(12). In order to avoid the miss leading from three-dimensional (3D) thermal diffusion, we developed the quasi-one-dimensional (q1D) flash method. By taking in account the heat radiation effect in transparent materials for this measurement, YVO(4) was found to have larger thermal conductivity than GdVO(4). The measured thermal conductivities were 12.1, 10.5, 10.1, 8.9, and 8.5 W/mK for c-cut YVO(4), c-cut GdVO(4), YAG, a-cut YVO(4), and a-cut GdVO(4), respectively. The dependence of Nd-conductivity coefficient (dkappa/dC(Nd)) for convenient evaluation of the doping effect in thermal conductivity is also discussed.