Ren, Z. A., Che, G. C., Ni, Y. M., Dong, C., Chen, H., Jia, S. L., ...
In this paper, the $Fe$-containing superconductors $Fe_{0.5}Cu_{0.5}Ba_2YCu_2O_{7+\delta}$, $Fe_{0.5}Cu_{0.5}BaSrYCu_2O_{7+\delta}$ and $Fe_{0.5}Cu_{0.5}Sr_2YCu_2O_{7+\delta}$ were successfully...
Quantum tunneling of vortices in a MgB$_2$ superconductor (2002)
Zhang, Y. Z., Deltour, R., Wen, H. H., Jin, C. Q., Ni, Y. M., Jia, S. L, ...
Magnetic relaxation in a MgB$_2$ superconductor was measured. The temperature dependence of the normalized relaxation rate was determined for three different magnetic fields. By extrapolating these...
Magnetic relaxation and critical current density of $MgB_2$ thin films (2001)
Wen, H. H., Li, S. L., Zhao, Z. W., Jin, H., Ni, Y. M., Kang, W. N., ...
Magnetic relaxation and critical current density have been measured on a $MgB_2$ thin film in a wide region of temperature with the magnetic field up to 8 T. The irreversibility line has also been...
Xuan, Y., Tao, H. J., Li, Z. Z., Lin, C. T., Ni, Y. M., Zhao, B. R., ...
Temperature and doping dependent tunneling spectroscopy on $Bi_2Sr_2CaCu_2O_{8+\delta}$ single crystals has been investigated by using break-junction technique. The results provide direct evidence...
Effect of Mg and C contents in MgCNi3, and structure and superconductivity of MgCNi3-xCox (2001)
Ren, Z. A., Che, G. C., Jia, S. L., Chen, H., Ni, Y. M., Zhao, Z. X.
The effect of Mg and C contents on TC in MgCNi3, and structure and superconductivity of MgCNi3-xCox were studied. It is found that the excess of Mg and C in initial material mixture is favorable to...
Preparation and Superconductivity of a MgB2 Superconducting Tape (2001)
Che, G. C., Li, S. L., Ren, Z. A., Li, L., Jia, S. L., Ni, Y. M., ...
A MgB2 superconducting tape has been successfully prepared by a new way of boron diffusion into Mg tape. This tape superconductor has a Tc of 39 K with a sharp transition width of 0.4 K, high bulk...
Superconducting properties and c-axis superstructure of Mg1-xAlxB2 (2001)
Xiang, J. Y., Zheng, D. N., Li, J. Q., Li, L., Lang, P. L., Chen, H., ...
The superconducting and structural properties of a series of Mg1-xAlxB2 samples have been investigated. X-ray diffraction results confirmed the existence of a structural transition associated with...
Zhao, Z. W., Li, S. L., Ni, Y. M., Yang, H. P., Liu, Z. Y., Wen, H. H., ...
By doing magnetization measurements during magnetic field sweeps on thin films of the new superconductor $MgB_2$, it is found that in a low temperature and low field region small flux jumps are...
Flux dynamics and vortex phase diagram of the new superconductor $MgB_2$ (2001)
Wen, H. H., Li, S. L., Zhao, Z. W., Ni, Y. M., Ren, Z. A., Che, G. C., ...
Magnetic critical current density and relaxation rate have been measured on $MgB_2$ bulks from 1.6 K to $T_c$ at magnetic fields up to 8 Tesla. A vortex phase diagram is depicted based on these...
Li, S. L., Wen, H. H., Zhao, Z. W., Ni, Y. M., Ren, Z. A., Che, G. C., ...
The lower critical field $H_{c1}$ has been carefully measured on a well shaped cylindrical sample of the new superconductor $MgB_2$ fabricated by high pressure synthesis. The penetration depth...
Strong quantum fluctuation of vortices in the new superconductor $MgB_2$ (2001)
Wen, H. H., Li, S. L., Zhao, Z. W., Ni, Y. M., Ren, Z. A., Che, G. C., ...
By using transport and magnetic measurement, the upper critical field $H_{c2}(T)$ and the irreversibility line $H_{irr}(T)$ has been determined. A big separation between $H_{c2}(0)$ and $H_{irr}(0)$...