Vol.4 No.3 (May 2014)
Thermal Conductivity Studies of SrTiO3
In order to study the influence of oxygen vacancies in SrTiO3 on its thermal conductivity, SrTiO3 single crystals were annealed in high temperature under vacuum. The thermal conductivities of the as-received and annealed samples were determined by measuring their specific heat Cp of the samples using Differential Scanning Calorimetry (DSC) and their thermal diffusivities using Laser Flash Apparatus (LFA). The analysis showed that oxygen vacancies were generated during annealing which led to lower thermal conductivity, and the thermal conductivity properties of SrTiO3 conformed to the Debye model.
李 宁 , 王惠琼 , 张宇锋 , 黄 政 , 任 飞 , 郑金成 (2014) 钛酸锶的热传导研究。 材料科学， 4， 73-79. doi: 10.12677/MS.2014.43012
 DiSalvo, F.J. (1999) Thermoelectric cooling and power generation. Science, 285, 703-706.
 Bell, L.E. (2008) Cooling, heating, generating power, and recovering waste heat with thermoelectric systems. Science, 321, 1457-1461.
 Joshi, G., Lee, H., Lan, Y., et al. (2008) Enhanced thermoelectric figure-of-merit in nanostructured p-type silicon germanium bulk alloys. Nano Letters, 8, 4670-4674.
 Ohta, H., Sugiura, K. and Koumoto, K. (2008) Recent progress in oxide thermoelectric materials: p-TypeCa3Co4O9 and n-type SrTiO3−. Inorganic Chemistry, 47, 8429-8436.
 Biswas, K., He, J., Zhang, Q., et al. (2011) Strained endotaxial nanostructures with high thermoelectric figure of merit. Nature Chemistry, 3, 160-166.
 Lee, S., Yang, G., Wilke, R.H.T., et al. (2009) Thermopower in highly reduced n-type ferroelectric and related perovskite oxides and the role of heterogeneous nonstoichiometry. Physical Review B, 79, Article ID: 134110.
 Wang, H.C., Wang, C.L., Su, W.B., et al. (2011) Doping effect of La and Dy on the thermoelectric properties of SrTiO3. Journal of the American Ceramic Society, 94, 838-842.
 Ohta, S., Nomura, T., Ohta, H., et al. (2005) High-temperature carrier transport and thermoelectric properties of heavily La-or Nb-doped SrTiO3 single crystals. Journal of Applied Physics, 97, Article ID: 034106.
 Callaway, J. and Von Baeyer, H.C. (1960) Effect of point imperfections on lattice thermal conductivity. Physical Review, 120, 1149-1154.
 Jeng, M.S., Song, D., Chen, G., et al. (2008) Modeling the thermal conductivity and phonon transport in nanoparticle composites using Monte Carlo simulation. Journal of Heat Transfer, 130, Article ID: 042410.
 Yu, C., Scullin, M.L., Huijben, M., et al. (2008) Thermal conductivity reduction in oxygen-deficient strontium titanates. Applied Physics Letters, 92, Article ID: 191911.
 Qiu, L.Y. and White, M.A. (2001) The constituent additivity method to estimate heat capacities of complex inorganic solids. Journal of Chemical Education, 78, 1076.
 Kittel, C. and McEuen, P. (1986) Introduction to solid state physics. Wiley, New York.
 Lee, J. and Demkov, A.A. (2008) Charge origin and localization at the n-type SrTiO3/LaAlO3 interface. Physical Review B, 78, Article ID: 193104.
 Kurosaki, K., Kosuga, A., Muta, H., et al. (2005) Thermoelectric properties of thallium compounds with extremely low thermal conductivity. Materials Transactions, 46, 1502-1505.
 Huang, J.D., Kuok, M.H., Lim, H.S., et al. (2003) Velocity angular dispersion of surface and bulk acoustic modes in SrTiO3. Journal of Applied Physics, 94, 7341-7344.