SYNTHESIS AND PROPERTIES OF SUPERPARAMAGNETIC Y-Fe2O3

• Main Authors: V.O. Kotsyubynsky (Author), V.V. Moklyak (Author), A.B. Hrubiak (Author)
• Format: Book
• Published: Vasyl Stefanyk Precarpathian National University, 2014-05-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Method of nanodispersed y-Fe₂O₃ synthesis by thermal decomposition of iron citrate is proposed. The investigations of obtained oxides crystal­line and magnetic structures are done. Nanodispersed y-Fe₂O₃ with sizes of coherent scattering regions about 4-7 nm was is only one phase after gel sintering at 200, 250 and 300^оС; the particles of synthesized materials are in a state of magnetic ordering and in superparamagnetic state. The influence of mag­netic dipole interparticles interaction on parameters of Moss­bauer spectra is observed. The phenomenological mo­del of the differences between nanodispersed y-Fe₂O₃ magnetic micro­structures ob­tained after annealing at different tem­pe­ra­tu­res is presented.

Item Description

2311-0155
2413-2349
10.15330/jpnu.1.1.33-39