PRODUCTION OF FINE FERRITE PARTICLE

摘要

PURPOSE:To heighten the sintering density without impairing the magnetic property by a heat treatment of fine particle formed through the mixing and hydrolysis of Li and Fe compounds of metal alkoxide in the production of cubic spinel ferrite. CONSTITUTION:Li and Fe compounds of a metal alkoxide as shown by M(OR)n (M represents a metal of 1-5 valent and R alkyl group) are mixed and undergoes a hydrolysis to form a cubic spinel ferrite with a grain size of less than 0.1mum. The particle thus obtained is reduced to a fine particle with a grain size of less than 0.1mum through a heat treatment below 800 deg.C.