Hall effect in cobalt-doped TiO$_{2-δ}$

Details Hall effect in cobalt-doped TiO$_{2-δ}$ Hall effect in cobalt-doped TiO$_{2-δ}$

2003-11-03

arxiv.org/abs/cond-mat/0311041v1

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.69.073201

We report Hall effect measurements on thin films of cobalt-doped TiO$_{2-\delta}$. Films with low carrier concentrations (10$^{18}$ - 10$^{19}$) yield a linear behavior in the Hall data while those having higher carrier concentrations (10$^{21}$ - 10$^{22}$) display anomalous behavior near zero field. In the entire range of carrier concentration, n-type conduction is observed. The appearance of the anomalous behavior is accompanied by a possible structural change from rutile TiO$_{2}$ to Ti$_[n}$O$_{2n-1}$ Magneli phase(s).

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