【摘要】 本文在 1MHz～ 180 0MHz频段内研究了化学组分、退火温度对BaZnCoTi W型铁氧体材料的电磁参数的影响。研究了其复介电常数εr(ε′、ε″)和复磁导率 μr(μ′、μ″)随频率的变化规律。实验研究还表明掺入Ti4 + 离子后 ,主要增大ε″且其峰值随着Ti4 + 离子含量增加向低频移动 ;掺入Co2 + 主要影响材料的磁导率 ,使 μ″r f的第二峰随着Co2 +离子增加向低频移动。更多还原

【Abstract】 The complex permittivity ε r(ε′、ε″) and permeability μ r(μ′、μ″) of BaZnCoTi-W type hexaferrites dependence of temperature、frequency and composition had been investigated in this paper. In the meantime, doped Ti 4+ ion mainly increased ε″ and peak of ε″ moves to low frequency. But doped Co 2+ mainly affects permeability and the second peak of μ″ r moves to low frequency with Co 2+ content increase.更多还原