Abstract
We have investigated the detailed temperature- and magnetic field dependence of magnetoresistance and Hall resistance in single-crystal CaVO 3-δ (δ∼0.2). We have found that the low-temperature magnetoresistance and extraordinary contribution to the Hall resistance are both expressed well in terms of a Brillouin function B J [ g J µ B H / k B ( T -Θ)], Θ=-2 K. From the magnetization vs magnetic field data, it may be deduced that 4% of vanadium ions have a localized magnetic moment of S =3/2 or that 6% have S =1. However a resistance minimum (the Kondo effect) was not observed in this system and its possible reasons are discussed.
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