Variable-range-hopping conduction and dielectric relaxation in disordered Sr0.97„Ti12xFex...O32d
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چکیده
Conduction and dielectric behavior of Sr0.97(Ti12xFex)O32d solid solutions were studied. The temperature dependence of the dc conductivity with s}A exp(2BT) obtained, indicated a variable-range hopping mechanism. A low-frequency dielectric relaxation was also observed. The activation energy for the variablerange hopping conduction is slightly higher than that for dielectric relaxation, suggesting that the dielectric relaxation is due to the trap-controlled ac conduction. @S0163-1829~98!05819-6#
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تاریخ انتشار 1998