反磁化

纳米晶永磁Pr8Fe（87）B5反磁化机理研究

Mechanism of magnetization reversal in nanocrystalline Pr_8Fe_ ( 87 ) B_5

快淬Nd-Fe-B纳米晶永磁反磁化机理研究

Study on the Coercivity Mechanism of Nd-Fe-B Melt-spun Nanocrystalline Magnets

简述了用δM（H）曲线和不可逆磁导率的变化研究晶粒交换耦合相互作用及反磁化过程的方法。

The technique for investigating the intergranular exchange ? coupling interaction by using δ M ( H ) plot and the demagnetization process by studying the variation of irreversible susceptibility are reviewed .

Nd2（Fe（1-x）Mnx）（14）B的磁化和反磁化行为可用窄畴壁的特征来解释。

The magnetization and demagnetization behaviors in Nd_2 ( Fe_ ( 1-x ) Mn_x ) _ ( 14 ) B can be understood in terms of narrow domain walls .

R2Fe（14）B型永磁材料中第二磁晶各向异性常数对反磁化过程的影响

Effect of the second-order magnetocrystalline anisotropic constant on the magnetization reversal in R_2Fe_ ( 14 ) B magnets

微细条形NiFe薄膜元件在磁化和反磁化过程中磁畴结构的变迁过程

The Transition Process of Magnetic Domain Structures During Magnetization and Magnetization Reversal in Small NiFe Thin Film Stripe

本文对取向烧结Nd-Fe-B合金沿取向易轴饱和磁化后的反磁化过程分四个阶段进行了理论研究。

The four stages of the demagnetization process of oriented sintered Nd-Fe-B alloy after saturation magnetizing along easy direction is studied theoretically in this paper .

添加Sn后引起样品中软磁相含量和软磁相晶粒尺寸的增加，使磁化反转中可逆磁化部分增多，且使反磁化形核场降低。

Furthermore , the increase of the volume fraction and grain sizes of the soft phase , in the Sn-doped ribbons , increases the portions of reversible magnetization and decreases the nucleation field H_n .

研究了测量程序对不同Cr层厚度的Co/Cr/Pd多层膜磁性的影响，分析了反磁化机理在不同测量程序中对磁性准确性的影响。

The influences of two measurement procedures on the magnetic properties of Co / Cr / Pd multilayers with different Cr layer thickness were studied . To explain the accuracy of measured data , the different magnetization reversal processes are suggested .

垂直磁记录介质Co－CoO膜的磁畴结构和反磁化机理

Domain Structures and Magnetization Reversal Mechanism in Co-CoO Medium for Perpendicular Recording

此外，对永磁材料领域的一个关键和热点的问题－反磁化的机理，也进行了研究和讨论。

Furthermore , the coercivity mechanism of such permanent magnets is studied also .

从反磁化机制的角度对矫顽力随角度的变化规律进行了解释。

The angular dependence of coercivity is interpreted in terms of magnetization reversal mechanism .

钡铁氧体粒子反磁化研究

Study on magnetization reversal of barium ferrite particles

最后讨论了这一材料的反磁化机制和提高矫顽力的途径。

Finally , the reverse magnetization mechanism and the tentative way of improving coercive force were discussed .

此模型可用来解释取向钡铁氧体磁粉介质的反磁化机理。

This model could be used to explain the magnetization reversal mechanism of the oriented Ba ferrite particulate media .

反磁化机制比较符合单畴转动模型。

It appears that the mechanism of reverse magnetization is agreement with the model of rotation of single - domains .

硬磁层主要是通过形核的畴壁移动来实现其反磁化过程的。

For the hard magnetic layer , the magnetization reversal process belongs to displace of the domain wall of formed nucleus ;

添加元素影响到磁体中的相结构和相分布，对反磁化场的均匀性有所影响。

The elements addition has effects on the phase structures and distributions in the magnets , which influence the uniform of demagnetization field .

而对于S形磁结构，当场强较弱时，两边缘畴壁移动到磁体中部重合随后消失，完成反磁化过程。

For the S-state , the magnetization reversal is realized through the motion of the end domain walls toward the central part of magnet and subsequently disappearing .

研究结果表明：在三维模型下，随着软磁层厚度的改变，体系的反磁化过程表现出了非常丰富的形式；

The results show : in the three-dimension dynamic modal , with the change of the thickness of soft layer , there is a rich magnetization reversal form .

基于此模型，推导了纳米线反磁化过程中不可逆磁化的临界场和矫顽力在一致转动和对称扇形模式下的表达式。

Based on this model , the expressions of critical field for the irreversible reversal magnetization and the coercive force are derived for both the parallel rotation and symmetric fanning mechanisms .

通过模拟还可以得到体系的涨落场和激活体积，判断反磁化机制和材料的热稳定性。

The fluctuation field and activation volume can also be got from the simulating , and we can deduce the mechanism of reversal magnetization and estimate the thermal stability of the materials .

模拟研究了各种缺陷、杂质以及纳米线间静磁耦合相互作用对纳米线反磁化机制和矫顽力的影响，进一步解释了实验值与理论值存在差别的原因。

The change of the reversal mechanism and coercivity in nanowires arose from various defects and magnetostatic coupling among nanowires have been simulated . Difference between simulated data and experimental results is explained further .

粉体粒度小可以避免多晶颗粒的比例，提高磁粉的取向度，同时单晶颗粒也有利于抑制反磁化核的形成，提高内禀矫顽力。

Due to the reduced proportion of crystalline particles and nice magnetic orientation degree , high performance magnetic materials can be prepared . Meanwhile single-crystal particles which is also conducive to inhibit the formation of anti-magnetic core can improve the intrinsic coercivity .

可变的分子连接性指数在有机化合物反磁磁化率拓扑研究中的应用

Application of variable molecular connectivity indices for topological research on diamagnetic susceptibilities of organic compounds