Modification of the Magnetic Properties of alpha-Fe2O3 Powders by Ultrasonic Processing

Stolyar, S. V.; Bayukov, O. A.; Iskhakov, R. S.; Yaroslavtsev, R. N.; Ladygina, V. P. TECHNICAL PHYSICS LETTERS, 43 (12):1092-1094; 10.1134/S1063785017120252 DEC 2017

Hematite (α-Fe2O3) powders after ultrasonic treatment (UST) in the regime of cavitation in aqueous suspension and in that with an organic component (albumin protein) have been studied by Mössbauer spectroscopy and ferromagnetic resonance techniques. It is established that the UST in aqueous hematite suspensions with albumin results in the formation of a new magnetic phase with parameters coinciding with those of the α-Fe metallic phase.