%0 Journal Article
%A Brooks, Charles M.
%A Wilson, Richard B.
%A Schäfer, Anna
%A Mundy, Julia A.
%A Holtz, Megan E.
%A Muller, David A.
%A Schubert, Jürgen
%A Cahill, David G.
%A Schlom, Darrell G.
%T Tuning thermal conductivity in homoepitaxial SrTiO$_{3}$ films via defects
%J Applied physics letters
%V 107
%N 5
%@ 1077-3118
%C Melville, NY
%I American Inst. of Physics
%M FZJ-2015-05140
%P 051902 -
%D 2015
%X We demonstrate the ability to tune the thermal conductivity of homoepitaxial SrTiO3 films depositedby reactive molecular-beam epitaxy by varying growth temperature, oxidation environment, and cationstoichiometry. Both point defects and planar defects decrease the longitudinal thermal conductivity(k33), with the greatest decrease in films of the same composition observed for films containingplanar defects oriented perpendicular to the direction of heat flow. The longitudinal thermal conductivitycan be modified by as much as 80%—from 11.5W m1K1 for stoichiometric homoepitaxialSrTiO3 to 2W m1K1 for strontium-rich homoepitaxial Sr1þdTiOx films—by incorporating (SrO)2Ruddlesden-Popper planar defects.VC 2015 AIP Publishing LLC.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000359375700014
%R 10.1063/1.4927200
%U https://juser.fz-juelich.de/record/203125