Effect of Ti doping on the electrical transport and magnetic properties of layered compound Na0.8CoO2
W. Y. Zhang, Y. G. Zhao, Z. P. Guo, P. T. Qiao, L. Cui, L. B. Luo, X., P. Zhang, H. C. Yu, Y. G. Shi, S. Y. Zhang, T. Y. Zhao, and J. Q. Li
TL;DR
This study investigates how titanium doping influences the electrical and magnetic behaviors of layered Na0.8CoO2, revealing structural changes, a metal-insulator transition, and magnetic properties following Curie-Weiss law.
Contribution
It provides new insights into how Ti doping alters the transport and magnetic properties of Na0.8CoO2, including the occurrence of a metal-insulator transition and changes in magnetic behavior.
Findings
Lattice parameters increase with Ti doping.
Minor Ti doping induces a metal-insulator transition.
Magnetization follows Curie-Weiss law across samples.
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.
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