QIN Zuoxiang
,
ZHANG Yansheng
,
ZHU Naiping Department of Materials Engineering
,
Dalian Railway Institute
,
Dalian
,
116022
,
China.Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
110015
,
China.
材料科学技术（英文）
The oxygen relief/absorption,superconduc— tivity and structure of(Bi_(1-x)Pb_x)_2Sr_2Ca_2— Cu_3O_y compounds have been studied by TGA, electrical resistance measurement and X-ray diffraction.The amount of oxygen which can be re- leased and superconductivity of the compounds are correlative to Pb con...
关键词:
oxygen relief/absorption
,
null
,
null
,
null
ZHANG Cheng
,
WANG Yongzhong
,
JIANG Ming
,
ZENG Dechang
,
TANG Hong
,
LI Zhongrun
,
QIAO Guiwen
,
CHUANG Yuzhi(Institute of Metal Research
,
Chinese Academy of Sciences
,
Shenyang
,
ChinaManuscript received on 20 April 1995)
金属学报(英文版)
Bi-2212 superconductive oxides with nanometer grains have been prepared by means of crystallization from amorphous materials.The structure and grain-size of samples were examined by.X-ray.diffraction,scanning electron microscopy.and high resolution electron microscopy.The temperature dependence of t...
关键词:
:Bi-2212
,
null
,
null
,
null
Zhiyong Liu
材料科学技术（英文）
Here we report the fabrication and superconductivity of the iron-based arsenic oxide SmO1-xFxFeAs compound. X-ray diffraction (XRD) results prove that the lattice parameters a and c decrease systematically with increasing x in between 0<x
关键词:
SmO1-xFxFeAs compound
F.H.Li
金属学报(英文版)
The melting temperature and critical transition temperature T, of YBa2Cu3O7-δ with deferent content additives of PbO and BaPbO3 were studied. When PbO was doped in YBa2Cu3O7-δ the melting temperature of YBa2Cu3O7-δ was reduced, however its superconductivity was weakened. From the XRD pattern of the ...
关键词:
YBa2Cu3O7-δ PbO additive
,
null
,
null
张俊良
,
张思佳
,
翁红明
,
于晓辉
,
张巍
,
杨留响
,
刘清青
,
冯少敏
,
望贤成
,
禹日成
,
曹烈兆
,
张首晟
,
戴希
,
方忠
,
靳常青
低温物理学报
通过高压电阻测量，发现了拓扑绝缘体化合物BizTe3压力诱导的超导性，在3-6GPa的压力范围内，超导临界温度L约为3K．高压下原位同步辐射的结果证明这个超导相来源于常压相结构．通过霍尔效应的测量，发现超导的Bi2Te3样品的载流子为P型．对高压同步辐射结果Reitveld精修得到的晶格参数和原子位...
关键词:
拓扑绝缘体
,
高压
,
超导性
,
Bi2Te3
王庆阳
,
闫果
,
刘国庆
,
焦高峰
,
熊晓梅
,
冯勇
,
张平祥
低温物理学报
采用Nb/Cu复合管作为外包套材料,通过原位法粉末装管工艺(PIT)制备了C掺杂MgB_2 /Nb/Cu线材.在高纯流动氩气保护条件下、650～950℃温度区间内烧结2h微观结构分析显示,通过该工艺制备的MgB_2/NbZr/Cu线材具有良好的晶粒连结性和较高的致密度.X射线衍射(XRD)分析表明在...
关键词:
二硼化镁线材
,
热处理温度
,
碳掺杂
,
超导电性
王庆阳
,
张平祥
,
闫果
,
熊晓梅
,
杨芳
,
刘国庆
,
焦高峰
,
李成山
稀有金属材料与工程
采用原位法粉末装管工艺(in-situ PIT),以Nb/Cu复合管作为包套材料制备了MgB2超导线材并且在氩气保护气氛中,不同温度条件下保温2h进行成相热处理.分别采用电阻-温度测试、磁矩转变测试、临界传输电流测试以及Nb-MgB2界面磁光研究等分析手段进行研究.结果表明:当热处理温度高于750℃...
关键词:
MgB2/Nb/Cu超导线材,超导电性
,
无定形碳掺杂
