超导材料

The discovery of superconductivity with a critical temperature higher than 40 K in the iron arsenide LnFeAs has drawn much interest in condensed matter physics.

最近，由于在铁基LnFeAs化合物及其相关化合物中发现具有高于40K的超导电性，层状的铁基化合物引起了凝聚态物理学界很大的兴趣和关注。在随后的研究中发现，在该类材料中最高超导临界温度可达到55K。

We have conducted measurements in heterodyne detection including superconductor mixers and semiconductor harmonic mixers, direct detection including InSb semiconductor bolometer and Golay Cell, and some materials which could be permeated by terahertz waves.

测得的频谱分辨率可达约1 GHz。我们已经测量的器件有：超导隧道结混频器和工作于常温的半导体肖特基谐波混频器，InSb半导体Bolometer和Golay Cell直接检测器，各种频率的THz信号源，和一些能透过THz的材料等。

In order to meet the requirement of the Collector ring dipole superconducting magnet of FAIR in the process of operation, meanwhile, and to ensure the heat loads coming from the support structures to be lower than the design demands, the 3D models of support structures have been constructed with CATIA, then the calculation of low-temperature heat-load and the structure analysis have been done with ANSYS, the support structure material, 316LN+G10, is decided according to the heat-load calculation and the structure optimization, these results are necessary for manufacturing the formal magnet.

为保证FAIR收集环(Collector ring-CR)超导二极磁体工作过程中的磁场位形符合设计要求，同时保证由磁体支撑带来的热负荷小于设计要求，用CATIA软件建立了不同结构的磁体支撑3D模型，并用ANSYS有限元分析软件对建立的模型进行了低温热负荷分析和结构分析。通过比较分析的结果和对磁体支撑结构进行的进一步优化，确定了316LN+G10材料的支撑结构，为收集环超导二极磁体工程制造提供了参考。

An experimental investigation into the effects of pure Ag and AgAu alloys sheath materials on the properties of Bi (2223) multifilamentary tapes is presented in this paper. The experimental results show that the drastic reduction of thermal conductivity and the increase of resistivity by the addition of Au into the Ag matrix can be achieved.

Bi（2223）/Ag及Bi（2223）/AgAu高温超导多芯带材低温下的热导率和横向电阻率实验研究结果表明，采用AgAu合金代替纯银作为包敷材料可以显著降低Bi（2223）高温超导多芯带材的热导率和提高横向电阻率。

The influence of sintering temperature and composition on the microstructure of Y-Ba-Cu-O superconducting ceramic prepared by reactive sintering was investigated. While the oxide powders react and sinter into the superconductor, transient liquid phase can disappear rapidly, and equilibrious liquid phase can promote the anisotropic growth of superconducting grains and isolate the grains.

本文运用X射线衍射、光学金相、扫描电子显微分析、热分析等材料研究手段研究了Y-Ba-Cu-O和Bi-Pb-Sr-Ca-Cu-O两个体系超导陶瓷的超导相与显微组织的形成过程，着重研究了液相在此过程中的作用，同时考察了显微组织与超导性能间的关系。

Frontiers in Superconducting Materials gives a state-of-the-art report of the most important topics of the current research in superconductive materials and related phenomena.

在Superconducting 材料里的国境给一份在超导的材料和有关的现象里的当今的研究的最重要的题目的最新型的报告。

The inventive MgB2 superconductive material has better performance under magnetic field, with better repeatability.

本发明制备的MgB 2 超导材料磁场下的性能非常优异，且具有很好的重复性。

Keywords superconductive materials;superconductor;electric power system;application

超导材料；超导电性；电力系统；应用

Spine1 structural materials are very important functional materials including dielectric, magnetic, sensitive, luminescent and superconductive materials.

尖晶石结构材料是新型功能材料的重要组成，在介电、磁性、敏感、发光、超导等功能材料中占据重要地位，并极具应用潜力。

Nanocrystalline hexagonal VSi〓, with an average diameter of 35nm, was prepared via a reduction-silication route by the reaction of metallic sodium with vanadium tetrachloride and silicon at 650℃ in a molten salt system of magnesium chloride and sodium chloride. The sample had good oxidation resistance at 1000℃.

金属硅化物通常具有很高的熔点、较低的电阻率、很好的高温热稳定性，有些还具有奇异的光、电、磁、超导、催化等性能，因此是一类最富潜力的高温结构材料和电子材料。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。