Magnetic phase evolution and particle size estimation study on nanocrystalline Mg–Mn ferrites
作者： K. B. Modi , N. H. Vasoya , V. K. Lakhani , T. K. Pathak
DOI: 10.1007/S13204-013-0287-9
关键词: Paramagnetism 、 Transmission electron microscopy 、 Materials science 、 Hyperfine structure 、 Powder diffraction 、 Zeeman effect 、 Nanocrystalline material 、 Mössbauer spectroscopy 、 Analytical chemistry 、 Spinel
摘要: The nanocrystalline spinel ferrite compositions of Mg x Mn1−xFe2O4 (x = 0.0, 0.2, 0.4 and 0.5) system have been synthesized by the chemical co-precipitation route. structural magnetic properties studied means X-ray powder diffraction (XRD), transmission electron microscopy (TEM) Mossbauer spectroscopic measurements. 57Fe spectra three specimens, as prepared, annealed at 200 °C sintered 1,100 °C, are recorded analyzed to study phase evolution. as-prepared samples show a paramagnetic doublet, exhibit simultaneous presence central doublet superimposed on two broad sextets while for well-resolved Zeeman split corresponding Fe3+ ions tetrahedral sites other due octahedral lattice along with doublet. particle size estimated from probability versus hyperfine field distribution curve is in agreement those determine XRD TEM analysis, validates method employed.
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