Impurity effects upon the Verwey transition in magnetite

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ID: 115554
1998
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Abstract
Magnetite single crystals ${\mathrm{Fe}}_{3\ensuremath{-}x}{M}_{x}{\mathrm{O}}_{4}$ doped with $M=\mathrm{Ni},$ Co, Mg, Al, Ga, and Ti were grown and annealed under a controlled atmosphere to produce homogeneous and oxygen stoichiometric samples. The cation vacancy concentration of the samples was proved to be lower than ${10}^{\ensuremath{-}6}$ by means of magnetic disaccommodation spectroscopy. The Verwey temperature shift as function of the substituent concentration was determined from the temperature dependence of the resistivity. The systematics of the transition temperature shift as function of the concentration and nature of the substituents is indicative that the mechanism of the transition is related to the second-neighbor Coulomb interaction of the cations on the octahedral sites.
Reference Key
brabers1998physicalimpurity Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors V. A. M. Brabers;F. Walz;H. Kronmüller;
Journal physical review b
Year 1998
DOI
doi:10.1103/PhysRevB.58.14163
URL
https://doi.org/10.1103%2FPhysRevB.58.14163
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