Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 14, Issue 4, Pages 764-769Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b310110j
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Nanocrystalline perovskite-type LaFeO3 with particle size of about 30 nm was prepared by a sonochemical method using iron pentacarbonyl and lanthanum carbonate as starting materials. The overall process involves three steps: formation of lanthanum carbonate using lanthanum nitrate and urea; reaction of the so-formed lanthanum carbonate with iron pentacarbonyl resulting in the formation of a precursor; calcination of the precursor to obtain nanocrystalline particles of LaFeO3. Transmission electron microscopy revealed the particles to have a mean size of about 30 nm. Study of the magnetic properties of nanocrystalline LaFeO3 particles shows a coercivity of similar to250 Oe, while the saturation magnetization is similar to40 memu g(-1).
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