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用双辊法制备了三种不同成份的钴基非晶样品.样品宽3mm,厚0.04mm.经处理后得到α_1≥0.95,μm≥80万Gs/Oe的性能.当B值为2000Gs,在60～2000周的频率下测量了样品的损耗.得出每周损耗——频率(p/f-f)曲线.发现在不同的频段其损耗均可近似地表示为P=a_ef~2+b_hf=P_e+P_(ho)其中P_e为涡流损耗,P_h为磁滞损耗.a_e、b_h分别为涡流、磁滞系数,通过对磁滞项的分析认为随频率的变化,畴结构要发生变化,
Cobalt-based amorphous samples of three different compositions were prepared by the two-roll method with a width of 3mm and a thickness of 0.04mm, and the properties of α_1≥0.95 and μm≥800000 Gs / Oe were obtained when the value of B was 2000Gs, The loss of the samples was measured at the frequency of 60 to 2000 weeks, and the weekly loss-frequency (p / ff) curves were obtained. The loss in different frequency bands can be approximated as P = a_ef ~ 2 + b_hf = P_e + P_ (ho) where P_e is the eddy current loss and P_h is the hysteresis loss, a_e and b_h are eddy current and hysteresis coefficient, respectively. According to the analysis of hysteresis term, the domain structure should change with the change of frequency,