Table 1

Average crystal sizes from XRD, spinel lattice parameteracalculated from XRD spectra, the specific magnetization (Ms), remnant magnetization (Mr), the ratio of the ratio of remnant magnetization to bulk saturation magnetization (Mr/Ms), and coercive forces (Hc) of the MgFe2O4/PVP composite samples calcined in air at 500, 600, 700, and 800 °C for 2 h
MgFe2O4sample Average crystallite size from XRD (nm) Spinel lattice parametersa(nm) Msat 10 kOe (emu/g) Mr(emu/g) Mr/Ms Hc(Oe)
Calcined at 500 °C 15 ± 4 0.8372 ± 0.0007 17.0 0.6 0.035 35.8
Calcined at 600 °C 17 ± 1 0.8362 ± 0.0012 20.7 0.8 0.040 37.6
Calcined at 700 °C 23 ± 2 0.8353 ± 0.0011 25.7 2.4 0.095 71.2
Calcined at 800 °C 24 ± 3 0.8346 ± 0.0030 31.1 4.7 0.151 98.9

Maensiri et al.

Maensiri et al. Nanoscale Research Letters 2008 4:221-228   doi:10.1007/s11671-008-9229-y

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