Abstract
The influence of the external magnetic field B ( B ≤ 4 T) on resistivity in magnetite single crystal was studied at few temperatures both below and above the Verwey transition temperature T V, and in two 〈1 0 0〉 type cubic directions. We have succeeded to confirm our predictions that the magnetic axis switching affects electronic transport. It was also found that the transverse resistivity ( B ⊥ current direction) exceeds longitudinal one, but only for T > T V, with no obvious systematics below the transition temperature. This may indicate that atomic disorder, inherent and poorly defined in a material with structural domains, is the primary factor that governs transport properties below the transition temperature. Finally, and concomitant with the last statement, only very small magnetic field dependence in magnetite below T V may be inferred from our data.
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