邯郸学院学报
邯鄲學院學報
함단학원학보
Journal of Handan College
2008年
3期
82~85
,共null页
Preisach-DOK模型 矫顽力 剩磁
Preisach-DOK模型 矯頑力 剩磁
Preisach-DOK모형 교완력 잉자
preisach-DOK model; coercivity; remanence
利用改进的Preisach-DOK模型模拟得到了纵向钡铁硬磁盘及γ-Fe2O3软盘的磁滞回线、剩磁回线、可逆曲线，分析了两种样品的剩磁特性．研究发现钡铁氧体的矫顽力主要由磁晶各向异性决定，大于主要由形状各向异性决定的γ-Fe2O3的矫顾力．同时钡铁氧体具有高的Sr，小的SP75和窄的SFDr，说明其具有较好的剩磁特性．
利用改進的Preisach-DOK模型模擬得到瞭縱嚮鋇鐵硬磁盤及γ-Fe2O3軟盤的磁滯迴線、剩磁迴線、可逆麯線，分析瞭兩種樣品的剩磁特性．研究髮現鋇鐵氧體的矯頑力主要由磁晶各嚮異性決定，大于主要由形狀各嚮異性決定的γ-Fe2O3的矯顧力．同時鋇鐵氧體具有高的Sr，小的SP75和窄的SFDr，說明其具有較好的剩磁特性．
이용개진적Preisach-DOK모형모의득도료종향패철경자반급γ-Fe2O3연반적자체회선、잉자회선、가역곡선，분석료량충양품적잉자특성．연구발현패철양체적교완력주요유자정각향이성결정，대우주요유형상각향이성결정적γ-Fe2O3적교고력．동시패철양체구유고적Sr，소적SP75화착적SFDr，설명기구유교호적잉자특성．
The hysteresis loop, the remanence loop and the reversible curve of a longitudinal barium ferrite hard disk and γ-Fe2O3 flexible disk were simulated by the improved Preisach-DOK model. The study results show that the coercivity of the barium ferrite decided by the magnetocrystalline anisotropy is larger than that of the acicular γ-Fe2O3 determined by the shape anisotropy. The barium ferrite has the superior remanence properties, such as high Sr＊, narrow SFDr and small SP75, illustrating the oriented barium ferrite possess the unusual remanence characteristic.
