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Structural and transport properties of epitaxial NaxCoO2NaxCoO2 thin films
Venimadhav, A.; Soukiassian, A.; Tenne, D. A.; Li, Qi; Xi, X. X.; Schlom, D. G.; Arroyave, R.; Liu, Z. K.; Sun, H. P.; Pan, Xiaoqing; Lee, Minhyea; Ong, N. P.
2005-10-24
Citation:Venimadhav, A.; Soukiassian, A.; Tenne, D. A.; Li, Qi; Xi, X. X.; Schlom, D. G.; Arroyave, R.; Liu, Z. K.; Sun, H. P.; Pan, Xiaoqing; Lee, Minhyea; Ong, N. P. (2005). "Structural and transport properties of epitaxial NaxCoO2NaxCoO2 thin films." Applied Physics Letters 87(17): 172104-172104-3.
Abstract: We have studied structural and transport properties of epitaxial NaxCoO2NaxCoO2 thin films on (0001) sapphire substrate prepared by topotaxially converting an epitaxial Co3O4Co3O4 film to NaxCoO2NaxCoO2 with annealing in Na vapor. The films are cc-axis oriented and in-plane aligned with [100]NaxCoO2[101¯0]NaxCoO2 rotated by 30° from [100][101¯0] sapphire. Different Na vapor pressures during the annealing resulted in films with different Na concentrations, which showed distinct transport properties.
