A study of the magnetic properties and the magneto-crystalline anisotropy for the nano-composites CoFe2O4/Sm0.7La0.3FeO3

In this study, nano-composites are formed as a mixture of spinel and a perovskite with various percentages to enhance their physical properties and applicability. The composites have the general form (1-x) CoFe2O4 + x Sm0.7La0.3FeO3; 0.0 <= x <= 1. All the samples including the parents are thoroughly characterized to make sure of their crystallinity, single or double phase formation, and the percentages of the mixed components. Moreover, the crystallite size of the prepared samples, the infrared excitation of their functional groups, and their particle distribution are also comprehensively explored. The inspected samples display the spinel ferrites signature peaks at around 405 and 568 cm(-1) with corresponding bond force constants of about 1 x 10(5) and 2 x 10(5) dyne/cm, respectively. The magnetic properties of samples at room temperature are discussed with extensive elaboration on the critical size and the magneto-crystalline anisotropy constant. The Stoner-Wohlfarth model has been applied to find the cubic anisotropy constant of CoFe2O4 which agrees pretty well with prior published data.

Automated summary

Nano-composites formed by mixing spinel and perovskite with various percentages are thoroughly characterized to enhance their physical properties and applicability. The magnetic properties of the samples, including critical size and magneto-crystalline anisotropy constant, are extensively discussed, with the application of the Stoner-Wohlfarth model to determine the cubic anisotropy constant of CoFe2O4.