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L. P. OL’KHOVYK and Z. I. SIZOVA
«Critical Fields of Reverse Magnetization of Nanocrystal Systems with Volumes Close to Superparamagnetic»
851–858 (2009)

PACS numbers: 75.20.Ck, 75.30.Gw, 75.50.Tt, 75.60.Jk, 75.75.Cd, 81.07.Wx, 81.40.Rs

The procedure for determination of temperature dependence of reversal-magnetization critical field for system of particles with real distribution by morphological parameters and with volumes close to superparamagnetic ones is proposed. Experimental data are processed with consideration for thermal fluctuations and transition of particles to superparamagnetic state. This procedure is used to study the specificity of magnetic properties of a system of the high-anisotropic hexagonal barium-ferrite nanocrystals.