RADIO WAVE ABSORBING MATERIAL

摘要

PURPOSE:To enable a radio wave absorbing material to have a high return loss over a wide band and to be thin and small in structure by using an Ni-Zn sintered ferrite of certain composition and high density. CONSTITUTION:A radio wave absorbing material is obtained by using sintered ferrite of more than 5.0g/cm<2> in density in which 64.80-66.80wt.% Fe2O3, 7.00-12.45wt.% NiO, and 20.60-23.00wt.% ZnO are employed as main compositions, or less than 5.6wt.% CuO is contained as a substituent for NiO.