磁常数

随机磁场中磁扩散常数和Kolmogorov熵计算

The calculations of magnetic diffusion constant and Kolmogorov entropy in a stochastic field region

利用分布函数，计算磁扩散常数和KOLMOGOROV熵。

The perturbation distribution function can be obtained by solving Liouville equations one by one , and the magnetic diffusion constant and Kolmogorov entropy can be calculated by using distribution function .

此外，用磁化功的方法计算了应力感生磁各向异性常数Ku。

In addition , the stress-induced magnetic anisotropy constant Ku was determined with magnetization work .

双自由基体系的磁性特征可采用磁交换耦合常数（J）来表征。

The magnetic characters of these diradical structures are represented with the magnetic exchange coupling constant ( J ) .

随着Ar气压增加，样品垂直膜面的矫顽力增加，但样品有效磁各向异性常数减小。

With increasing sputtering Ar gas pressure , the perpendicular and in-plane coercivity of the samples increase , but the effective magnetic anisotropy constant decreases .

论述了磁各向异性常数的快速傅立叶变换（FFT）的估算原理、实现方法以及实现中磁转矩函数周期的识别、样本的取舍、傅氏级数的系数选取等问题。并给出一个实际计算的例子。

: The FFT estimating principle and implementation of uniaxial magnetic anisotropic constants , as well as the periodic recognition of the torque function , the determination of sample size and the choice of FFT coefficiences etc are introduced .

磁各向异性常数的快速傅立叶变换估算方法与实现

FFT Estimating Method and Implementation of Uniaxial Anisotropic Constants

这些效应可用来确定颗粒体积与磁各向异性常数二者之积。

These effects allow a determination of the product of the particle size and the magnetic anisotropy energy constant .

结果发现，有效磁各向异性常数随粒度的减小而增大，微粉的有效磁各向异性常数大于锂铁氧体的磁晶各向异性常。

The calculated results showed that the effective magnetic anisotropy constants of ultrafine particles were larger than the magnetocrystalline anisotropy constant of Li-ferrite .

通过计算得到的局域自旋结果和前人的具有可比性，同时所得的磁交换耦合常数和实验值很吻合。

The calculated local spin results are comparable to previous ones and the obtained pariwise exchange coupling constants are in well agreement with experiments .

发现在X结构化合物中，室温下的磁晶各向异性常数随含钆量的增加而增加；

For X structure , the magnetocrystalline anisotropy constant increased with X at room temperature .

与实验结果对比，表明纳米尺度下Fe的磁光科尔效应常数可能大于体材料下的情况。

Combining with experiment , we show that the magneto-optical constant of nano-scale Fe may be larger than that of the bulk Fe .

通过减小晶粒尺寸，可使有效各向异性常数K相比局部的磁晶各向异性常数K1小几个数量级，有利于提高磁导率。

By reducing the grain size , the effective anisotropy can be decreased to extremely low value , usually several orders less than the local anisotropy .

其中Co-Pt薄膜更是由于矫顽力高、磁晶各向异性常数大、抗氧化和抗腐蚀性强等优点而倍受关注。

Especially , Co-Pt magnetic films have attracted intensive attention due to their large coercivity , strong magnetic anisotropy and high corrosion resistance .

磁光玻璃费尔德常数的波长依赖性和磁光玻璃光纤电流传感器中存在的问题

Wavelength-dependence of Verdet Constant of Magneto-optic Glass and Corresponding Problems in Magneto-optic Glass Fiber Current Sensor

我们可以解析地得到这个矫顽力机制发生变化时的临界厚度，并且发现它与硬磁相磁晶各项异性常数的平方根成反比。

The critical thickness where the coercivity mechanism alters , could be derived analytically , which is found to be inversely proportional to the square root of the crystalline anisotropy of the hard phase .

在研究超磁致伸缩材料性能的基础上，提出采用电流负反馈电路使磁振荡的时间常数减小，以增加对高频信号的快速响应，减小失真，进而产生较大的位移输出。

Based on research on characteristics of magnetostrictive material , negative current feedback is adopted in controller , to decrease time constant of magnetic vibration circuit , resulting in high frequency increasing , lower distorting and bigger output displacement .

应用光与物质相互作用的经典理论对磁光效应、磁光常数和琼斯矩阵进行了推导与阐述；

The magneto-optical effect , Verdet constant and Jones matrix were deduced and expounded by using the classic theory of interaction between light and media .

在密度泛函理论的基础上，应用对称性破损方法研究了氢键桥联双核铜模型配合物的磁耦合行为以及磁耦合常数随OO距离的变化趋势。

Based on the density functional theory ( DFT ) combined with the broken symmetry ( BS ) approach , the magnetic coupling interaction in the hydrogen-bonded copper (ⅱ) dimmer and the change of magnetic coupling constant with the change of the O_O distance were studied .

近零磁伸金属玻璃饱和磁伸常数的退火和温度依赖性

Annealing and temperature dependence of magnetostriction in nearly zero-magnetostrictive metallic glasses

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

利用超声相比较法对CoO的顺磁相、反铁磁相的弹性常数及它们的压力导数进行测量。

Using ultrasonic phase comparison method , the elastic properties and pressure derivatives of paramagnetic and antiferromagnetic phase of cobalt oxide are measured .