Determination of the thermal diffusivity of pure and doped yttrium orthovanadate by Ångström's method*
Silesian University of Technology, Institute of Physics, Krzywoustego 2, 44-100 Gliwice, Poland
2 Institute of Electronic Materials Technology, Wólczynska 133, 01-919 Warszawa, Poland
Thermal diffusivities of pure YVO4 single crystal and single crystals doped with Nd, Tm and Ca ions are measured using a modified Ångström's method. Measurements were carried out for main crystallographic directions (,  and ). Obtained results show that the thermal diffusivity in  direction is considerably higher than in (001) plane. Decrease of the thermal diffusivity is observed with growing concentration of dopants. For the heavier doped sample (5% at. of Tm + 0.4% at. of Ca) a drop of the thermal diffusivity is about 35%.
© EDP Sciences, Springer-Verlag, 2008