Figure 7From: Magnesium Ferrite (MgFe2O4) Nanostructures Fabricated by ElectrospinningFT-IR spectra of the MgFe2O4/PVP composite samples calcined in air for 2 h at different temperatures.a As-spun,b 500 °C,c 600 °C,d 700 °C, ande 800 °CBack to article page