Thermal conductivity reduction in oxygen-deficient strontium titanates

Thermal conductivity reduction in oxygen-deficient strontium titanates. Yu, C., Scullin, M. L., Huijben, M., Ramesh, R., & Majumdar, A. Applied Physics Letters, 92:191911, 2008/05/12, 2008.

Paper abstract bibtex

We report significant thermal conductivity reduction in oxygen-deficient lanthanum-doped strontiumtitanate ( Sr 1 - x La x Ti O 3 - δ ) films as compared to unreduced strontiumtitanates. 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.

@article {575,
	title = {Thermal conductivity reduction in oxygen-deficient strontium titanates},
	journal = {Applied Physics Letters},
	volume = {92},
	year = {2008},
	month = {2008/05/12},
	pages = {191911},
	abstract = {We report significant thermal conductivity reduction in oxygen-deficient lanthanum-doped strontiumtitanate ( Sr 1 - x La x Ti O 3 - δ ) films as compared to unreduced strontiumtitanates. 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.},
	keywords = {Ozone, Phonons, Thermal conductivity, Thermoelectric effects, Vacancies},
	isbn = {0003-6951, 1077-3118},
	url = {http://scitation.aip.org/content/aip/journal/apl/92/19/10.1063/1.2930679},
	author = {Yu, Choongho and Scullin, Matthew L. and Huijben, Mark and Ramesh, Ramamoorthy and Majumdar, Arun}
}

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