Author/Authors :
Zhang، نويسنده , , W.Y. and Zhao، نويسنده , , Y.G. and Guo، نويسنده , , Z.P. and Qiao، نويسنده , , P.T. and Cui، نويسنده , , L. and Luo، نويسنده , , L.B. and Zhang، نويسنده , , X.P. and Yu، نويسنده , , H.C and Shi، نويسنده , , Y.G. and Zhang، نويسنده , , S.Y. and Zhao، نويسنده , , T.Y. and Li، نويسنده , , J.Q.، نويسنده ,
Abstract :
Effect of Ti doping on the electrical transport and magnetic properties of layered Na0.8Co1−xTixO2 compounds has been investigated. The lattice parameters a and c increase with x. A minor amount of Ti doping results in a metal–insulator transition at low temperatures. For samples with x>0.03, the variable-range hopping process dominates the transport behavior above a certain temperature. The temperature dependence of magnetization of all the samples is found to obey the Curie–Weiss law. The mechanism of the doping effect is discussed.
