顺磁性的

Furthermore, the relationship between the hyperfine field variation and the cation distribution is discussed.

饱和磁化强度和居里温度的测量结果表明，这种现象可能是由于样品中纳米颗粒表现出的超顺磁性导致的。

Some methods, such as hydrothermal method, sol-gel method and pulse laser deposition method, have been developed to prepare manganite nanomaterials. Studies on the nanoscaled manganites revealed that they exhibit a number of novel physical properties such as low field high magnetoresistance, superparamagnetism, and large coercivity and more promising applications as compared to the corresponding bulk compounds.

发展了低温水热法、溶胶凝胶法、脉冲激光沉积模板法等方法制备锰氧化物纳米材料，研究发现纳米级的锰氧化物表现出了一些不同于块材的奇特的物理性质：如低场高磁阻效应、超顺磁性、大矫顽力、低饱和磁化强度及表面自旋玻璃等。

We discovered that, for sample sizes of around 3~4 nm the anti-ferromagnetism disappears and paramagnetic behavior surfaces.

我们发现当样品尺寸约在3-4nm时样品的反铁磁转变消失而变成顺磁的磁性行为。

As the temperature rises, strong paramagnetism decreases because of the greater random motion of the atoms.

强顺磁性随温度的升高而减弱，这是因为原子磁体的较强的无规运动产生反排列作用。

This paper introduces the magnetic susceptibilities of common gases. Based on the physical characteristics that oxygen is a paramagnetism gas and its magnetic susceptibility is obviously higher than other gases, a magnetomotive design scheme is proposed and analyzed to measure the content of oxygen in mixed gases.

介绍常见气体磁化率，利用氧气顺磁性，且磁化率明显高于其它气体的物理特性，分析磁动式测量混合气体中氧气含量的方案。

X-ray single crystal analysis of a new paramagnetic manganese complex with DTPA-BpABA (a DTPA- bisamide derivative), Mn·4H2O, shows that four oxygen atoms and three nitrogen atoms from the ligand coordinate to Mn cation, forming a seven-coordinate distorted pentagonal bipyramid polyhedron.

采用X-射线单晶衍射法对锰与DTPA-BpABA(DTPA-二酰胺衍生物)形成的一个新的顺磁性配合物Mn·4H2O进行了结构测定。

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。

Monodisperse carboxylated superparamagnetic polymer composite microspheres with high magnetite content were prepared by miniemulsion copolymerzation,in which acrylic acid and styrene were used as polymeric monomers,and Fe3O4 microparticles were costabilized by undecylenic acid /oleic acid.

在表面由十一烯酸和油酸共同修饰的Fe3O4磁流体存在下，以苯乙烯和丙烯酸为共聚单体，用细乳液聚合法，制备了单分散，高Fe3O4含量，且表面带有羧基的超顺磁性高分子复合微球。

AIM: To label bone marrowderived stem cells with superparamagnetic iron oxid and to explore the image characteristics and signal attenuation rules of in vivo the magnetic resonance imaging of the labeled cells in rabbit liver.

目的：探讨超顺磁性氧化铁标记骨髓干细胞的方法和标记细胞在肝脏内的磁共振活体成像特点和衰减规律。

It was found that the stability of the nickelchelates is in accord with the base strength of the amino acids,and these chelates shou...

实验结果表明镍的络合物具四面体结构，N-萘氨基乙酸镍的顺磁性亦证明此点。

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。