Magnetite Fe3O4 nanoparticles and hematite α-Fe2O3 uniform oblique hexagonal microdisks, drum-like particles and spindles and their magnetic properties

Phase- and shape-controlled synthesis of the magnetite Fe3O4 nanoparticles and the hematite α-Fe2O3 uniform oblique hexagonal microdisks to drum-like particles and spindles has been realized by simply adjusting the volume ratio of ethylene glycol (EG) and water of the hydrothermal reaction medium solvent and the magnetic properties of the hematite α-Fe2O3 crystals express regular change with the shape evolution from uniform oblique hexagonal microdisks to drum-like particles, spindles and irregular particles.