强磁性

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。

With a sufficiently large field the material saturates and further increases in magnetic field produce no further changes in magnetic flux.

在磁记录技术中，磁性材料的磁化状态，当磁场足够强时，材料饱和，此时，进一步增加磁场强度不会改变其磁通量。

The development of the magnetic metallic fiber absorbents and the prospect of this field are put forward.

新型磁性金属纤维吸收剂是实现&薄、轻、宽、强&吸波涂层的理想吸收剂之一。

This product can be used with STG series plastic dryer. It can efficiently prevent the magnetism guide metal such as iron screw etc, from mixing into plastic machine with plastic material.It features strong magnetism, wide application, easy stucture and convenient use etc.

该系列产品可与STG系列料斗式塑料干燥机配套使用，能有效地防止钢制螺钉，铁屑等金属杂物随塑料原料混入注塑机而导致损坏螺杆料筒；具有磁性强，磁场均匀，适应范围广，结构简单，使用方便等特点。

Comparing with the Presinian migmatitic granites, this Group has higher density and susceptibility.

与前震旦纪混合花岗岩相比，兴华渡口群具有密度高、磁性强的特点。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。