The authors studied the conduction mechanism in an uranium doped low dimensional magnetic
system Ca2CuO3. This system exhibits the S=1/2 quasi ID antiferromagnetic chains of -Cu-O- with strong
magnetic coupling, and demonstrates continuous semiconductor-like behavior with constant covalent
insulator character. This paper identifies the conduction is due to thermally activated phonon-assisted
electron hopping betwee dopant uranium sites. The parameter ?, the characteristic for hopping probability,
was determined to be 0.18 ??-1. This value manifests a relatively stronger hopping probability for Ca2CuO3
as compared with other uranium doped ceramics. ?? 2008 Journal of Magnetics.
