XRD patterns and Rietveld refinement results for the powdered LuFe2O4 ceramic at 300 K.
Scanning electron microscopy images for LuFe2O4 samples. (a) High-energy ball milled powder (12 h), and (b) as-fired (1473 K/1 h) ceramic surface.
(a) Temperature and frequency dependent dielectric constant (ɛ′) for the LuFe2O4 ceramic. (b) Ferroelectric hysteresis loops, at 200 K and 10 Hz, for the LuFe2O4 ceramic. Inset: Vogel-Fulcher representation and correlated fitting curve.
(a) Magnetic hysteresis loops for the LuFe2O4 ceramic powder at 300 K and 200 K. (b) field cooling and zero field cooling M × T curves at a probe field of 100 Oe.
Mössbauer spectrum (symbols) and fitting curve (line) for the LuFe2O4 powdered ceramic at room temperature. Site 1—fitting curve (dashed line) for the Fe3+ subspectra, and Site 2—fitting curve (dotted line) for the Fe2.5+ subspectra.
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