الفهرس 
Synthesis and characterization of CoFe O /ReFeO 2 4 3 Multiferroic nanocomposites
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Abstract
The citrate-nitrate auto-combustion method is considered to prepare
Lanthanum adopted rare earth (RE) elements to form RE0.7La0.3FeO3; RE =
Ce, Pr, Nd, Sm and Gd) nanoparticles and CoFe2O4 samples. Then the nano
composites consisted of Sm0.7La0.3FeO3 and CoFe2O4 with different
composition ratios were formed. A thorough study of the structure,
morphology and magnetic properties of the inspected samples has been
investigated using XRD, HRTEM and VSM, respectively. Rietveld
investigations show that Introducing rare earth ions into LaFeO3 decreases
the Fe–O–Fe angle. Moreover, VSM results indicate that coercivity of
Sm0.7La0.3FeO3 is remarkably improved relative to the parent sample. The
magnetic properties of various nanocompsites at room temperature are
discussed with extensive elaboration on the critical size and the
magnetocrystalline anisotropy constant.