摘要
在一般的磁滞回线计算中,磁晶各向异性能的高次项被忽略.运用一致转动的模型,在外磁场与易轴方向分别平行和垂直的情况下,通过分析磁晶各向异性能的四次方项对铁磁材料磁化过程的影响,得到磁滞回线的形状随磁晶各向异性能四次方和二次方项常数的比值λ的不同而发生变化,并给出不同λ时的矫顽力解析公式.结果对铁磁和铁电材料都适用.
In most calculations of hysteresis loops, higher order terms of the magnetocrystalline anistropy are ignored. In this paper, the effect of the fourth order term of the magnetocrystalline anistropy on the demagnetization process has been investigated by using a coherent rotation model, with both parallel and perpendicular easy axes defined relative to the applied field. The shape of hysteresis loop changes with various A, which is the ratio of the fourth order term and the second one in the magnetocrystalline aniaotropy coefficient. Analytical formula for the coercivity has been derived as a function of A. The results here are applicable to both ferromagnetic and ferroclectric materials.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第6期854-860,共7页
Journal of Sichuan Normal University（Natural Science）
基金
国家自然科学基金(10747007
11074179)资助项目
关键词
一致转动
四次方项
磁滞回线
矫顽力
解析公式
coherent rotation
fourth order term
hysteresis loop
coercivity
analytical formulae
