铁磁体

It is found that:(1) the variation of dFM may lead to two different features for the IEC,one is the oscillatory behavior of IEC with the spacer thickness,the other is the exponential behavior in the most spacer thickness.(2)As a oscillatory function of dFM ,the IEC exhibits multiple periods and a negative non-oscillatory term.(3)The Fermi energy of the conduction electrons has a little variation as the magnetization of the two FMs changes from parallel to antiparallel alignment,furthermore,this variation is correlated with the IEC to some extent.

结果发现：（1）dFM的变化会导致层间交换耦合出现两种不同的特征，一种是随着中间层厚度的增加，IEC有振荡行为；另一种是其指数衰减行为；（2）作为dFM的振荡函数，IEC表现出多个周期和一个负的非振荡项；（3）传导电子的费密能会随着两铁磁体的磁化排列变化而稍有变化，进一步地，这种变化与IEC有着某种程度的关联。

A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

一种二价或三价金属元素，坚硬的银白色铁磁体，植物动物营养中的微量元素。

Silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

一种二价或三价金属元素，坚硬的银白色铁磁体，植物动物营养中的微量元素。

When the temperature is less than 15 K, the PBTCA-Nd~(3+) complex is a ferromagnet, otherwise, it is a diamagnet. Both PPHBT-Nd~(3+) and PPHPHN-Nd~(3+) exhibit the characteristic of soft-magnetic materials at low temperature, the Curie-Weiss temperature are 80 K and 150 K, respectively.

实验结果表明，含咔唑聚合物的稀土配合物PBTCA-Nd~(3+)表现出特殊的软铁磁性，具有一个磁转变温度15 K，低于此温度时配合物是个铁磁体，反之，为抗磁体。

The difference of the two modes is adding the secondary coil at the magnet of the closed-loop sensor. The Hall part measure the magnetism voltage difference state of the measured current and the secondary current.

磁补偿式与直测式的区别在于其铁磁体上另加一平衡绕组，霍尔器件仅检测被测电流和平衡绕组中电流在铁磁体中所产生的磁电势的平衡状态。

In this paper, we have studied the dimensional effects, electronic state, the configurations of charge density and spin density for quasi-one-dimensional organic ferromagnets. First, considering interchain interaction, the itineracy of electrons, the electron-electron correlation, electron-phonon interaction and spin correlation in low dimensional system, we proposed an interchain coupling theoretical model for conjugated system and non-conjugated system of organic polymer ferromagnets, respectively. Based on the theoretical model, we studied the electronic property, spin structure, the configuration of dimerization and the stability of the ferromagnetic state with a self-consistent iterative method.

首先我们在考虑准一维有机铁磁体的链间相互作用、电子的巡游性、强的电子-电子关联、电子-声子耦合、自旋关联等因素的基础上，分别对两种类型的有机高聚物铁磁体各自提出一个包含链间耦合的理论模型，用自洽迭代的数值计算方法对其电子性质、自旋结构、二聚化特征及铁磁态的稳定性进行了研究。

The q-axis and d-axis reactance, in which is parallel structure with several branches, is studied by analytical method.

利用解析法对永磁体和铁磁体多支路并联磁路的交、直轴电抗进行了推导，给出了满足工程设计精度的计算方法。

Aiming at two key issues in the molecular design of high-spin moleculesand organic ferromagnets, i.e., the ferromagnetic coupling strength in localradical fragments and the changeover of coupling capabilities offerromagnetic coupling units in building high-spin molecules, we made anextensive and deep investigation on numerous important conjugated radicalsystems within the semiempirical and nonempirical VB model, respectively.

针对高自旋分子和有机铁磁体的分子设计中的两个重要问题，即自由基片断的铁磁偶合强度及铁磁偶合单元在&建造&高自旋分子时其偶合能力的变化，分别用半经验的和非经验的VB模型，以一些重要的共轭自由基体系为对象进行了广泛而深入的研究。

In part two,thermodynamical Green's function is used to discussthe ferromagnetic behavior of organic ferrromagnets.

第二部分中，我们用热力学格林函数理论研究了有机铁磁体的铁磁行为。我们得出低温自发磁化正比于T3/2和T1/2e-2JZSα/T。

At low tem-peratare,the spontaneous magnetization is proportional toand;TC formula and the Curie-Weiss laW of the suscepti-bility at higher temperature are resulted.

我们给出了居里温度Tc公式并讨论了有机铁磁体的高温磁化率。我们发现居里温度不仅与有机铁磁体的施体和受体自旋有关，而且还与链内耦合和链间耦合有关。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。