Ferroelectrics · 1997 · 15 citations · 8 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsCrystal StructureMaterials PhysicsDielectric MaterialsDielectric PropertiesDielectric ResponseDielectricsGlass MaterialsPhase TransitionsDielectric RelaxationFreezingGlass DielectricsGlass Transition BehaviorPolarizationShort-range OrderSpontaneous Polarization
Abstract We report low frequency dielectric dispersions of ErFe2O4 in which equal numbers of Fe2+ and Fe3+ ions occupy the sites on a triangular lattice. The first dispersion observed between 200 K and 300 K is explained qualitatively on a model that spontaneous polarization is present in the crystal below the Verwey transition. The second dispersion at higher temperatures is characterized by a few glass-like features. It was interpreted by successive freezing of the local dipole moments accompanied by short-range ordering of Fe2+ and Fe3+ ions. Keywords: Dielectric RelaxationDipole glassVerwey transitionSpin glassRFe2O4 ErFe2O4.
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U. T. Höchli, K. Knorr, A. Loidl · Advances In Physics · 1990 · 724 citations · Full text
Two-dimensional spin ordering in YFe2O4
Jun Akimitsu, Yasuhiro Inada, Kiiti Siratori et al. · Solid State Communications · 1979 · 72 citations