Fe_2O_3-Sb_2O_3-TeO_2系ガラスの電気伝導

概要

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Fe_20_3 Sb_20_3 Te0_2 glasses were prepared by the press quenching method and their dc conductivities were measured. The glass formation region was found to be O≦Fe_20_3≦15 mol%, O≦Sb_20_3≦18 mol%, and 78≦Te0_2<100 mol% . Seebeck coefficient measurements showed that these glasses were n type semiconductors. The glasses gave conductivities 6 ranging from 1.62 x 10^<-6> to 1.86 x 10^<-7>S cm^<-1> at 473 K. The dc conductivity increased with an increase in Fe203 content. Evaluated carrier mobility and concentration ranged froun 7.5xlO^<-10> to 5.3xl0^<-3>cm^2.V^<-1> S^<-1> and from 1.5 x 10^<21> to 1.9 x 10^<15> cm^<-3> at 473 K, respectively. The conduction of these glasses was due to non adiabatic snrall polaron hopping.
社団法人日本セラミックス協会の論文
1995-01-01