Fig. 1.
X-ray scattering and corresponding magnetic enhancement. (A) X-ray total scattering intensities collected as a function of sample aging time (h) at 175 °C with citrate. Transformation to hematite (Arrows) begins at t = 8 h (indicated by *) and is complete by 14 h. (B) Formation of a strongly magnetic intermediate phase indicated by increases in room temperature magnetic susceptibility (χ) and saturation magnetization (Ms) at low temperature (5 K), with both reaching maxima at approximately 11 h.