Synthesis and magnetic properties of polyhedral Fe3O4 nanocrystals.

Nanoparticles of Fe₃O₄ were synthesized employing a wet chemical procedure, succeeded by compacting into pellets. Diverse particle dimensions were achieved via vacuum sintering of pellets at 800°C, with durations of 4 hours and 24 hours respectively. The exploration encompassed a thorough analysis of the magnetic attributes through temperature, field, and time-dependent magnetization measurements. Measurements were executed within the magnetic fields up to 7.5 kOe. Structural aspects of polyhedral Fe₃O₄ particles were scrutinized via X-ray Diffraction (XRD) patterns, with determination of crystallite size and. Furthermore, in-situ chemical analysis was facilitated through an energy-dispersive X-ray (EDX). Magnetization assessments were undertaken, exploring the magnetic effect of the samples concerning temperature and field variables. Notably, both samples exhibited a ferrimagnetic state at 300K, evident from their M–H curves. This comprehensive study illuminates the magnetic attributes of nano-sized Fe₃O₄ particles, providing valuable insights into their versatile behavior across varying conditions and augmenting the comprehension of their potential applications. [ABSTRACT FROM AUTHOR]