低 温 物 理 学 报

(DIWEN WULI XUEBAO)

27卷  第4期  2005年11月

 

 

无序CuZrCuY合金的电阻和磁电阻……………………李燕飞  桂太龙  徐小龙

MgB2超导体参量的理论研究………………………沈东星  孙爱民  边海琴  田翠锋

用于微波滤波器的Tl2Ba2CaCu2O8超导薄膜………………………………………………

…………阎少林,方兰, 赵新杰,何明,路荣涛,路昕,周铁戈,贾颖新,王建伟

MgO衬底上制作Tl2Ba2CaCu2O8超导薄膜……………………………………………

………………………路昕  阎少林  赵新杰  方兰  何明  左涛   曾立山  周铁戈

超导薄膜表面电阻测量新方法…………………………………………………………

……………………………………………张旭  阎少林  孙冬艳  冯洪辉  何明 方兰

基于高温超导本征约瑟夫森效应的新型两端恒流器件…………………………………

……………………周铁戈   阎少林        李永刚   路昕    赵新杰   何明

PLD法制备PZT-YBCO结构的铁电薄膜的研究……………………吴平  彭润玲  符欣

CMOS电路低温特性及其仿真………………………………………………周鹏  冯一军

过渡金属离子掺杂对La1.2Ca1.8Mn2O7输运性质的影响……………………………………

………………………………………………陈春霞  章建辉  钱天  周桃飞  李慧玲

TFA-MOD方法制备YBCO超导薄膜研究………崔旭梅  陶伯万  陈家俊  李言荣  刘兴钊

一种宽带高温超导微带天线的研究………………………… 刘淑芳  刘少东  官伯然

顶端加载、温度范围在300~1.4K的多功能交流测量恒温器……………………………

……………………………………………… 樊洁  宋小会  景秀年  李山林  张殿琳

Bi2212单晶本征钉扎的不可逆线………………………………冯双久  李广  李晓光

CDMA移动通信系统用高温超导滤波器的研制 …………………………………………

……………………………………季来运  陈勤文  陈国  高海霞  孙钧  陈月云

9.7GHZ高频窄带高温超导滤波器设计………………胡益华  曹必松  魏斌  张晓平

制冷机冷却的超导磁体在励磁时的稳定性分析……………刘宏伟  余运佳  王秋良

 


 

CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS

Vol.27   No.4   Vol,  2005

CONTENT

 

Electrical resistance and magnetoresistance of disordered CuZr and CuY alloys…………

…………………………………………………Li Yan-fei,  Gui Tai-long,  Xu Xiao-long

Theoretical research on parameters of superconducting state of a bulk MgB2……………

……………………………Shen Dong-xing,  Sun Ai-min,  Bian Hai- qin, Tian Cui-feng

Tl2Ba2CaCu2O8 Thin Films For Microwave Filters………………………………………

………………YAN SHAO-LIN, FANG LAN,  ZHAO XIN-JIE,  HE MING,  LU YONG-TAO,  LU XI,

ZHOU TIE-GE, JIA YIN-XIN, WANG JIAN-WEI

Prerparation and Characterisation of  Tl2Ba2CaCu2O8 Thin Films on MgO Substrates

……………………………………LU XI, YAN SHAO-LIN,  ZHAO XIN-JIE,  FANG LAN, HE MING,

ZUO TAO, ZENG LI-SHAN, ZHOU TIE-GE

A New Measurement Method of Surface Resis Tance of Superconduconducting Thin Films

……………………ZHANG XU, YAN SHAO-LIN, SUN DONG-YAN, FENG HONG-HUI, HE MING, FANG LAN

Two-terminal Constant Current Devices Based on HTS Intrinsic Josephson Effects ………

…………ZHOU TIE-GE, YAN SHAO-LIN, FANG LAN, LI YONG-GANG, LU XI, ZHAO XIN-JIE, HE MING

Study on PZT-YBCO Ferroelectric Films Prepared by PLD Technique………………………

………………………………………………………………WU PING, PENG RUN-LING, FU XIN

Cryogenic Temperature Characteristics and Simulation of CMOS Circuits………………

………………………………………………………………………Zhou Peng, Feng Yi-jun

Transition-element doping effects in La1.2Ca1.8Mn2O7………………………………………

…………………CHEN Chen-xia, ZHANG Jian-hui,  QIAN Tian,  ZHOU Tao-fei, Li Hui-ling

Investigation of Preparing YBCO Superconducting Film by TFA-MOD Method……………

……………………Cui Xu-mei,  Tao Bo-wan,  Chen Jia-jun,  Li Yan-rong,  Liu Xing-zhao

Study on a kind of broadband high-temperature superconducting microstrip antenna………

……………………………………………LIU Shu-Fang,  LIU Shao-Dong ,  GUAN Bo-Ran

A 300~1.4K Top Loading He Cryostat for multi purose  AC Measurements………………

……………………FAN JIE, SONG XIAO- HUI,  JNG XIU- NIAN, LI SHAN- LIN, ZHANG DIAN- LIN

Irreversibility line of intrinsic pinning in Bi2212 single crystal………………………………

……………………………………………………Feng Shuang-jiu,  Li Guang,  Li Xiao-guang

Design of HTS Filter for CDMA Mobile Communication System…………………………

…………Ji Lai-Yun   Chen Qin-Wen  Chen Guo-Zhi  Gao Hai-Xia  Sun Jun  Chen Yue-Yun

A High-Frequency and Narrow-Band HTS filter At 9.7GHZ………………………………

…………………………………………Hu Yi-hua, Cao Bi-song, Wei Bin, Zhang Xiao-ping

Stability Study on Cryocooler-Cooled Superconducting Magnets During Current Excitation

…………………………………………………Liu Hong-Wei, YU YUN-JIA, WANG JIU-LIANG


无序CuZr和CuY合金的电阻和磁电阻

 

李燕飞  桂太龙  徐小龙

哈尔滨理工大学 150080 哈尔滨

 

       以熔化-旋转法制备了Cu70Zr30和Cu­100—XYX( X = 28, 67 )非晶带试样并在1-300 K温度范围内测量了电阻和磁电阻随温度变化的规律.非晶Cu70Zr30电阻率ρ(T)的温度系数(TCR)在整个测量温区内都是负值,并且在两个不同的温区表现出-T1/2行为.对于类似的Cu­100—XYX合金系统,在1~200 K 温区内也做了同类测量.在低温1~4 K, 两个不同的无序系统CuZr和CuY的 TCR都准确地表现出-T1/2行为,这表明无序系统在极低温条件下的量子相干效应.这主要应归因于在粒子-空穴通道的电子-电子相互作用.而无序Cu70Zr30在宽广的中低温区60—300 K以更大斜率表现出的—T1/2行为,可以用初始定域化理论解释.无序CuZr和CuY的低温磁电阻ρ(B,T)测量结果与定域化理论进行了拟合和讨论.

 

关键词:非晶态合金;磁电阻;电阻

PACC 0130

 

 

     Electrical resistance and magnetoresistance of disordered CuZr and CuY alloys

 

Li Yan-fei   Gui Tai-long  Xu Xiao-long

Harbin University of Science and Technology, Harbin 150080, P.R.China

 

Melt-spun ribbons of Cu70Zr30 and Cu100-xYx(x=28,67) have been prepared and measured the temperature dependence of the electrical resistance, , in the range of 1-300 K. A negative temperature dependence of  for Cu70Zr30 through the whole temperature range were found.  behaviors of the reduced resistivity are displayed in two ranges of temperature. One of the  dependence of the electrical resistivity in the range of 1-4 K may be mainly attributed to the electron-electron interaction in particle-hole channel, the other in the wide intermediate temperature range of 60-300 K can be accounted for by incipient localization. For the similar alloys of melt-spun Cu72Y28 and Cu33Y67 the  in the range of 1-200 K were measured as a contrast. The interaction at low temperature is also identified in these two systems. Their temperature coefficients of  have a change sign that was analyzed. The positive magnetoresistances  of disordered Cu70Zr30 and CuY at a few different temperatures up to 20 K in the fields below 1.8T were also measured. The weak-localization is dominant in the  of these alloys. The fittings of the  data to the localization theory are discussed. It could be noticed that all the physical quantities such as ρ, TCR, MR and  are stronger for the Y-richer CuY alloys.

Key words: amorphous alloys; magnetoresistance; electrical resistance

PACC:      0130


 

MgB2超导体参量的理论研究

 

沈东星 孙爱民+ 边海琴 田翠锋

西北师范大学物理与电子工程学院  兰州  730070

        在各向同性的双带GL理论的框架内, 研究了块体MgB2的一些超导态参量:包括关联长度ξ(T), 临界Cooper 对速度υc(T),London穿透深度λ(T)以及临界电流密度јc(T)随温度的变化关系;并将穿透深度λ(T)和临界电流密度јc(T)的理论计算结果和实验数据作了比较,符合得较好.

 

  关键词: MgB2 超导,  Ginzburg-Landau理论

  PACC 7420M, 7460M, 7470L

 

 

Theoretical research on parameters of

superconducting state of a bulk MgB2

 

Shen Dong-xing  Sun Ai-min +<