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25 April 2024

» arxiv » cond-mat/0506268

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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 ; J. Q. Li ;
Date:	12 Jun 2005
Subject:	Strongly Correlated Electrons; Materials Science \| cond-mat.str-el cond-mat.mtrl-sci
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.
Source:	arXiv, cond-mat/0506268
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