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| 1 | The vortex dynamics of a Ginzburg-Landau system under pinning effect显示文摘It is proved that the vortices of a Ginzburg-Landau system are attracted by impurities or inhomogeneities in the super-conducting materials. The strong H1-convergence for the system is also studied. | 简怀玉 徐兴旺 | 2003 | Science China Mathematics2003，46，4： | 11 |
| 2 | HTS filter and front-end subsystem for GSM1800 wireless base station显示文摘The first HTS front-end subsystem for wireless base station in China was developed. This demonstration system, which aims at the application in GSM1800 mobile communication base station, consists of a single RF path, i.e. one filter and one LNA, integrated with the pulse tube cooler. The subsystem works at a pass band of 1710-1785 MHz with a gain of 18 dB and at a temperature of 70 K. The accomplishment of such a demonstration subsystem can boost the development of HTS commercial subsystem. | 何豫生 黎红 何艾生 李顺洲 李春光 张雪强 张太平 阎令文 朱文秀 周远 梁惊涛 洪嘉生 M.J.Lancaster | 2002 | Science China(Technological Sciences)2002，45，6： | 1 |
| 3 | PARAMAGNETIC MEISSNER EFFECTS IN MELT-TEXTURED Y_(0.99)Nd_(0.01)Ba_2Cu_3O_(7-y)SUPERCONDUCTOR显示文摘The paramagnetic Meissner effect (PME) was observed on the field-cooled M-T curves of melt-textured Y0.99Nd0.01Ba2Cu3O7-y in applied magnetic fields from 1kOe to 40kOe. In the magnetic field below 1kOe, the sample undergoes the typical transition from the normal state to the superconducting state when it was cooled down. The applied magnetic fields in which the PME occurs, are very high compared with the fields reported in literatures. We propose that the occurrence of the PME may be due to a phase transition of flux vortices in the superconductors. | | 2002 | Acta Metallurgica Sinica(English Letters)2002，15，3： | 0 |
| 4 | Effect of excess Y_2O_3 addition on the physical properties of melt processed YBCO bulks显示文摘The YBCO superconductors with Y2O3 addition were prepared by a modified melt textured process and the effects of excess Y2O3 addition on the physical properties of melt textured YBCO have been investigated. It is found that the melt temperature of YBCO samples decreases drastically with the increasing Y2O3, and the maximum levitation forces are drastically different for samples with different Y2O3 addition. It is also found that the optimal Y2O3 addition to YBCO is about 10wt%. Considering the microstructure and the starting composition, the results are well discussed and interpreted. | YANG Wanmin1,2,3, ZHOU Lian2, FENG Yong2, ZHANG Pingxiang2, WU Minzhi3 & W. GAWALEK3 1. Department of Physics, Shaanxi Normal University, Xi抋n 710062, China 2. Northwest Institute for Nonferrous Metal Research. Xi抋n 710016, China 3. Institute fur Physikalische Hochtechnologie e.V(IPHT), Jena, Germany Correspondence should be addressed to Yang Wanmin (email: wm-yang@sohu.com) Received June 27, 2003 | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，1： | 0 |
| 5 | Scaling of ac susceptibility and the nonlinear response function of high-temperature superconductors显示文摘The amplitude-dependent ac susceptibility of high-temperature superconductors is shown to obey some empirical scaling relations. We try to analyze this behavior by extending a dc nonlinear response function of mixed state to the ac cases. The derived equations for critical current and ac susceptibility x(T) agree with the scaling relations of experimental data. | CHEN Kaixuan NING Zhenhua XU Hengyi QI Zhi LU Guo WANG Furen YIN Daole | 2005 | Science China(Physics,Mechanics & Astronomy)2005，48，1： | 0 |
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