Abstract
Rubidium tungsten bronze (Rb x WO3) is a nonstoichiometric metallic compound whose variation in x value allows the electron concentration to be changed without altering the crystal structure. Magneli,1 who determined the crystal structure, found that the hexagonal lattice has channels along the c axis formed from WO6 octahedra joined at their corners. The rubidium ions lie in these channels. When all the channel sites are occupied x = 0.33, so this x value corresponds to the upper limit for the formation of hexagonal Rb x WO3.
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References
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Kienzle, W.E., Bevolo, A.J., Danielson, G.C., Li, P.W., Shanks, H.R., Sidles, P.H. (1974). Heat Capacity of Rubidium Tungsten Bronze. In: Timmerhaus, K.D., O’Sullivan, W.J., Hammel, E.F. (eds) Low Temperature Physics-LT 13. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2688-5_82
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DOI: https://doi.org/10.1007/978-1-4684-2688-5_82
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