磁滞

Multiple magnetic parameters such as magnetic susceptibility , anhysteretic remanent magnetization , saturation remanent magnetization , coercivities of SIRM , and S ratios (relative abundance of low-coercivity magnetic minerals) are measured for all 179 surface samples, and partial representative samples are examined for their magnetic hysteresis parameters, temperature-dependence of magnetic susceptibility and x-ray diffraction spectra.

对于全部179个海底表层沉积物样品，测量了多个磁学参数，如：磁化率、非磁滞剩磁、饱和等温剩磁、剩磁矫顽力、S比率（低矫顽力矿物的相对含量）。

Applications in the latching devices require the microwave ferrites with better temperature stability and hysteresis properties.

在闭锁式器件的应用中对微波铁氧体材料提出了有较好的温度稳定性和磁滞性能的要求。

FeSi nanoparticles were synthesized via thermal decomposition of iron pentacarbonyl in the solution of dioctyl ether, stabilizers oleic acid and oleylamine. The TEM images showed that FeSi nanoparticles had cubic shape, but it seemed that the composition was not uniform. According to the EDS results, the Fe:Si ratio of gray-uniform nanopaiticles was almost 1:1, and blacker FeSi nanoparticles contained more Fe atoms. Although FeSi didn't have uniform structure, it still could be proved that the incorporation of Fe and Si existed in a single nanoparticle. All possible structure, lattice, binding, morphology, surface condition would be discussed. These results indicated that perhaps FeSi2 was the main structure of the new products; however, due to incompletely combination and less synthesized time, it might still contain some part of Si and Fe structure. Besides, FeSi nanoparticles preserved the optical properties from Si atoms, but the PL intensity was much lower. The maxima PL peak appeared at 388 nm with the excitation at 300 nm. Their saturation magnetization, remanent magnetization and coercivity were measured by the SQUID, exhibiting their nearly superparamagnetic behavior.

利用热裂解系统可成功将研磨矽奈米粒子及五羰铁结合，制备出铁矽奈米粒子；从穿透式显微镜照片可知其粒子呈现立方体型态，但颜色深浅及组成不均，EDS结果则显示颜色均匀之粒子铁与矽之组成大致为1：1，颜色较深之粒子则含有较高量的铁元素；尽管组成比例并不统一，但单颗粒子同时含有矽与铁两种元素，初步说明铁矽奈米粒子之形成；进行多种结构与表面分析并探讨所有可能之键结、结构及表面元素后，推测铁矽奈米粒子可能以FeSi2之结构形成，并同时包含未重组完成的矽及铁之结构；利用PL分析得知铁矽奈米粒子确实保留矽之放光特性，并在300 nm激发光源下，於波长388 nm处有一最强放光特性峰，但整体发光效益不及研磨矽奈米粒子之结果；最后，利用超导量子干涉磁化仪量测其饱和磁化量、残留磁化量、与矫顽磁力，发现磁滞现象并不明显而几乎呈超顺磁性。

Utilizing this simulation model, saturation characteristics of transformer considering hysteresis and remanent flux are analysed.

利用这一模型，对考虑磁滞、剩磁影响时的变压器饱和特性进行了仿真分析，为分析变压器的饱和特性提供了简单有效的手段。

Then, the characteristics of the YTF s hysteresis, dynamic non-linearity and temperature-excursion, which were the important factor of synchronal sweeping and tracking technology, were .

本文对其原理进行了详细描述，介绍了一种基于数字驱动设计的实现方法，针对影响同步扫描跟踪的主要因素——YTF的磁滞、动态非线性和温漂等特性进行了重点分析，并且给出了补偿措施。

When the field is applied along the wires, the hysteresis loop exhibits a shear effect, which always means an equivalent demagnetizing field. It comes from the dipole interaction between the wires. The coercivity of the Fe nanowire arrays in the diameter of 16nm is 2000Oe at 300K, and it will increase to 2800Oe when the temperature decreases to 5K.

不同直径的Fe纳米线的磁滞回线均表明沿着线的方向均表现出shearing effect，表明其中存在一个等效退磁场，它来源于线间的偶极相互作用。16m的Fe纳米线的矫顽力室温下为2000Oe，5K时则达到2800Oe。

The coercivity mechanism has been analyzed by magnetic viscosity measurements, coercivity measurement at different temperatures, showing a dominant mechanism of the wall pinning.

采用磁滞测量、矫顽力和温度的关系等分析得出，薄膜的矫顽力机制以畴壁钉扎为主。

The effects of the error of CT and VT, hysteresis and load variation to short-circuit reactances are discussed also. By using error analysis and simulation analysis, this paper discussed the feasibility in engineering.

论文分析了互感器误差在几种情况下对短路电抗测量结果的影响；通过变压器建模，分析了磁滞特性和负载变化量大小对短路电抗测量结果的影响，验证了该方法在工程应用上的可行性。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

Forming mechanisms of the spin glass state and re-entrance phenomenon of B2 type FeAl compound were analyzed, and it was thought that different mechanisms existed in FeAl compounds with various ranges of compositions such as indirect exchange interaction, short-range ordering of partial atoms, and finite and infinite radical coexistence.

研究了不同成分的B2型FeAl化合物磁化强度与外场的关系、磁化强度与温度的关系、磁滞回线的特点，分析了B2型FeAl化合物自旋玻璃态、再进入现象的形成机制，认为FeAl化合物不同成分范围内应存在不同机制如间接交换作用、部分原子短程有序、有限、无限原子集团作用并存。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。