Funct. Mater. 2021; 28 (4): 689-693
doi:https://doi.org/10.15407/fm28.04.689
Effect of pH on the interparticle magnetic interaction in ensembles of barium hexaferrite particles
1National University of Pharmacy, 53 Pushkinska St., 61002 Kharkiv, Ukraine
2Simon Kuznets Kharkiv National University of Economics, 9a Nauky Ave., 61000 Kharkiv, Ukraine
Abstract:
The pH effect on the parameter of interparticle magnetic interaction of a compacted system of oxide ferromagnet is studied. An unpredictable change in the sign of the interparticle interaction parameter Δm at 300 K was found after the surface of microcrystals was treated with of acid and alkali solutions. The observed effect confirms the decisive role of surface spins in the interparticle interaction.
Keywords:
interparticle magnetic interaction, barium hexaferrite, pH effect.
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