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The thermal conductivity of SrxBa1−xNb2O6 ceramics increases with increasing temperature and exhibits a maximum around the Burns temperature. At the same temperature, the semiconductor–metallic transition occurs in the electron transport. This agreement indicates that the polarized regions have an effect on electrical and thermal transport. SrxBa1−xNb2O6 ceramics have lower lattice thermal conductivities...
(Na 0.5 Bi 0.5 ) 0.94 Ba 0.06 TiO 3 -Bi 12 TiO 20 composite ceramics, which display macroscopic interfaces and have a net macroscopic polarization, were fabricated by an ordinary sintering technique. All the coarse grains were found to have nano-networked surfaces, implying a relatively high content of amorphous phases in this kind of ceramic...
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