Due to those properties of the m - type ferrite , we consider that the mechanical properties of structural materials which the m - type ferrite as a second particles is dispersed in will be improved , and at the same time they will possess magnetism 基于铁磁材料的上述特性，我们认为在结构陶瓷中引入铁磁体作为二相粒子，能够提高复合材料的力学性能并且使结构陶瓷兼具结构和功能的特性。
The mram needs to be of a large magnetoresistance ( mr ) effect at room temperature and lower magnetic field , in order to demands of practical application . however , the large tunneling mr effect is strongly dependent upon electrode material , which is of high spin polarization 采用高自旋极化率( p )的材料是产生大的隧穿磁电阻( tmr )效应的关键之一，而半金属( half - metal )铁磁材料的自旋极化率p理论上可达100 。
Use electromagnetic finite element method to analyze the distribution of eddy current field with different power supply , then to research that the temperature and distribution of ferromagnetic material can improve the control of electromagnetic and electrothermal field greatly . there into the research of the theory and computation of electromagnetic field act on other physical field is the foundation of the application of magnetic technology , and it is also one of the hot - spot topics in circles researching electromagnetic field 利用电磁场有限元法分析涡流场在不同电源激励下的分布，进而研究铁磁材料中的温度及其分布可以大大提高对电磁场和对电热场的控制，其中电磁场和其它物理场综合作用理论和计算的研究是相关磁技术应用的理论基础，也是近年来电磁场计算应用的难点课题。
Multiferroelectric magnetoelectri materials have a spontaneous polarization that can be reoriented by an applied electric field , a spontaneous magnetization that can be reoriented by an applied magnetic field . these materials have been exploited as transducer , waveguides , switches , phase inverters , modulators , etc . which also find a lot of technological applications in radioelectronics , optoelectronics , microwave electronics in instrumentation 这类材料同时具有铁电和铁磁材料的性能可以应用到传感器，波导器件，转换器，相位倒相器，变频器，调节器等，在无线电电子学，光电子学，微波电子学等领域的发展具有重要意义。
Furthermore , a new method to measure the concentration of ferromagnetic alloys was exhibited , and its reliability was also confirmed , which is to measure the curie point of specimens by the dsc analysis and then compare the data with ones of standard specimens so that to observe the concentration of specimens 此外，论文中表述了一种新的铁磁材料组成成分测定的方法，并予以比较验证。即利用dsc分析测量铁磁转变居里点的变化，与标准试样进行比较，从而确定试样组成的含量。
Based on the review of the factors of affecting the distribution of mfl on the ferromagnetic material , this dissertation described the wire rope defects characters from mfl signal and put emphasis on the analysis of the mfl character of mass broken wires in a strand . this dissertation indicated the peak value and width and sharpness of the mfl signal , which together provided information about mass broken wires 在总结了铁磁材料漏磁影响因素的基础之上，分析了钢丝绳各种缺陷漏磁的特征，重点研究了钢丝绳一股中集中断丝的漏磁特征，指出漏磁波峰的峰值、宽度、峰尖锐度等共同反映集中断丝的信息。
According to the effective field expression which has been derived in former , the phenomenon that the tangential component of magnetic leakage field has maximum value and the normal component of magnetic leakage field acquires zero value at the stress concentration zone of positive magnetostriction ferromagnetism materials under the application of tensile stress and negative magnetostriction ferromagnetism materials under the application of compressive stress is explained theoretically through analyzing and discussing 根据所得到的地磁场中受力铁磁性材料有效场表达式，通过分析讨论，解释了受拉力作用的正磁致伸缩铁磁材料和受压力作用的负磁致伸缩材料在应力集中处漏磁场切向分量出现最大值、同时法向分量为零值的现象。
The mathematical model of non - linear transient magnetic field excited by voltage source is established in this paper . it coupled with electric circuit equation and mechanical motion equation , could solve the transient problem excited by voltage source , and the effect of the eddy currents , non - linearity in magnetic materials and mechanical motion of medium is taken into account 文中建立了电压源激磁下的非线性瞬态磁场的数学模型，通过把瞬态磁场方程、电路方程及机械运动方程耦合在一起，得出求解电压源激磁下，考虑铁磁材料的非线性、导电媒质的涡流及媒质机械运动等条件下的瞬态过程问题。
The regenerative characteristics , performance parameters and optimal theories of the encsson and stirling cycles using respectively a ferroelectric material , a ferromagnetic material , a classical gas , a quantum gas and a spin system as the working substance are researched for different operating conditions 本论文主要研究以铁电材料、铁磁材料、经典气体、量子气体和自旋系统等不同材料为工作物质的埃里克森循环和斯特林循环在各种不同条件下的回热特征、性能参数及优化理论。
Ptmn has practically been used as anti - ferromagnetic layer to pin ferromagnetic layers because of its large exchange bias , high blocking temperature and excellent thermal stability . on the other hand , ptmn films deposited by magnetron sputtering without substrate heating require a relatively high temperature post - deposition annealing in magnetic field to induce a unidirectional exchange field hes 由于ptmn反铁磁材料具有大的交换偏置，比较高的blocking温度和较好的热稳定性，在自旋阀结构中ptmn已经在实际应用上用来钉扎铁磁层。
