TY - JOUR
KW - Thermal conductivity
KW - Phonons
KW - Lanthanum
KW - Strontium titanates
KW - Strontium compounds
KW - Complex oxides
KW - Oxygen vacancies
KW - Doping (additives)
KW - Thermoelectricity
KW - Clustered vacancies
AU - C Yu
AU - M.L Scullin
AU - M Huijben
AU - Ramamoorthy Ramesh
AU - A Majumdar
AB - We report significant thermal conductivity reduction in oxygen-deficient lanthanum-doped strontium titanate (Sr1-x Lax Ti O3-δ) films as compared to unreduced strontium titanates. Our experimental results suggest that the oxygen vacancies could have played an important role in the reduction. This could be due to the nature of randomly distributed and clustered vacancies, which would be very effective to scatter phonons. Our results could provide a pathway for tailoring the thermal conductivity of complex oxides, which is very beneficial to various applications including thermoelectrics. © 2008 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.2930679
LA - eng
M1 - 19
N1 - cited By 86
N2 - We report significant thermal conductivity reduction in oxygen-deficient lanthanum-doped strontium titanate (Sr1-x Lax Ti O3-δ) films as compared to unreduced strontium titanates. Our experimental results suggest that the oxygen vacancies could have played an important role in the reduction. This could be due to the nature of randomly distributed and clustered vacancies, which would be very effective to scatter phonons. Our results could provide a pathway for tailoring the thermal conductivity of complex oxides, which is very beneficial to various applications including thermoelectrics. © 2008 American Institute of Physics.
PY - 2008
T2 - Applied Physics Letters
TI - Thermal conductivity reduction in oxygen-deficient strontium titanates
VL - 92
SN - 00036951
ER -