TY JOUR TI Alkali metal diffusion in ferritic systems KW potassium monoferrite KW hematite KW solid-phase interaction KW polyferrites with -alumina and  alumina structure JO From Chemistry Towards Technology Step-By-Step AU Dvoretskaya, A.N. AU Anikanova, L.G. AU Sudzilovskaya, T.N. AU Dvoretskii, N.V. PY 2025 IS 6 PB Yaroslavl State Technical University