Magnetic particles of maghemite (spinel γ-Fe2O3) are synthesized by means of aerosol pyrolysis, making it possible to produce chemically uniform highly-dispersed single-phase materials. The magnetic properties of synthesized particles for temperatures ranging from helium temperature up to room temperature and higher are investigated using a SQUID magnetometer. The experimental curves are compared to the results from calculations performed by the Monte Carlo method. It is found that the Curie temperature is lower for γ-Fe2O3 nanoparticles than for bulk samples. Several parameters of the material are estimated by comparing the experimental and calculated results.
|Number of pages||6|
|Journal||Bulletin of the Russian Academy of Sciences: Physics|
|Publication status||Published - 21 Oct 2014|