Chin. Phys. Lett.  1990, Vol. 7 Issue (7): 326-329    DOI:
Original Articles |
HIGH-Tc SUPERCONDUCTING PROPERTIES OF YBa2Cu3-xSnx O7-y SYSTEM
WANG Yuxia;RUAN Yaozhong;TAN Yudong;WANG Xiaozhong;ZHOU Guien*;FAN Chenggao*;ZHANG Yuheng*
Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 Structure and Components Alalysu Center, University of Science and Technology of China, Heifei 230026
Cite this article:   
WANG Yuxia, RUAN Yaozhong, TAN Yudong et al  1990 Chin. Phys. Lett. 7 326-329
Download: PDF(59KB)  
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract The effect of Sn concentration on the superconducting properties and structure of YBa2Cu3-xSnx O7-y system were systematically investigated. The zero resistance temperature was found to be above 90K as z ranges from 0 to 1.1. For x > 1.3, the system exhibited no superconducting properties at liquid nitrogen temperature. The results of X-ray diffraction showed a regular pattern of mixed structures of 123 phase and a new phase in the system with the increase of Sn concentration. TEM analysis suggested that the new phase might be BaSnO3 with deformed perovskite structure and about 6% of Cu were substituted by Sn in the 123 phase at x = 1.0. It is therefore likely that the new phase modulates the structure of 123 phase and stabilize the 123 phase. Although the Sn atoms enter 123 phase and occupy the Cu sites in the Cu-O chain and break the chain, the system remains with Tc > 90K. Consequently, the Cu-O chain plays a less important role in the high-Tc superconductivity.


Keywords: 74.70.Vy     
Published: 01 July 1990
PACS:  74.70.Vy  
TRENDMD:   
URL:  
https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1990/V7/I7/0326
Service
E-mail this article
E-mail Alert
RSS
Articles by authors
WANG Yuxia
RUAN Yaozhong
TAN Yudong
WANG Xiaozhong
ZHOU Guien
FAN Chenggao
ZHANG Yuheng
Related articles from Frontiers Journals
[1] ZHOU Xingjiang, YAO Yushu, DONG Cheng, LI Jingwei, JIA Shunlian, ZHAO Zhongxian. Superconductivity in a New (Sr, Y)CuO2 System Synthesized Under High Pressure [J]. Chin. Phys. Lett., 1994, 11(2): 326-329
[2] GUQ Shuquan, QIN Xiaomei, ZHANG Jinlong, WU Zu’an, YE Bin*, ZENG Rong*, ZHOU Yiru*, ZHOU Min*. Angular Dependence of Critical Current in Ag-Seathed Bi(2223) Superconductor Tape [J]. Chin. Phys. Lett., 1993, 10(9): 326-329
[3] DING Yongfan, LI Jizhou, YANG Jilian, ZHANG Baisheng, KANG Jian, YE Chuntang, FU Qiang*, JIN Sheng*, CUI Yujian*, HE Aisheng*, HE Yusheng*. Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y[J]. Chin. Phys. Lett., 1993, 10(8): 326-329
[4] ZHOU Xingjiang, YAO Yushu, LI Jianqi. XU Wei, JIA Shunlian, ZHAO Zhongxian. Phase Transformation in the Infinite Layer Structure Compound (Sr, Nd) CuO2 and its Effect on Superconductivity [J]. Chin. Phys. Lett., 1993, 10(8): 326-329
[5] TONG Litai, CHEN Haiying, YAN Shousheng, ZHANG Cungui, ZHOU Lian, WANG Keguang. Distribution of Magnetic Flux in Powder-Melting-Processed YBCO Superconductors[J]. Chin. Phys. Lett., 1993, 10(5): 326-329
[6] LIU Peng, LI Jingwei, YIN Bo, GUO Shuquan, ZHAO Zhongxian, FENG Yong, ZHOU Lian. Pinning Potential and Critical Current Densities in Powder Melting Processed Y(Ho)BCO Samples [J]. Chin. Phys. Lett., 1993, 10(11): 326-329
[7] CHEN Zuyao*, TANG Yongqiu**, Z. Z. Sheng, Y . F. Li, D. O. Pederson,. New 1222-Type Thallium-Indium Layered Cuprates (Tl, In)Sr2(Nd, Ce)2Cu2Oz and Their Superconductivity [J]. Chin. Phys. Lett., 1993, 10(1): 326-329
[8] ZHU Yingjie, QIAN Yitai, LI Rukang, WANG Shiwei, CHEN Zuyao, CHEN Zhaojia*, WANG Nanling*, ZHOU Guien**. Electrical Properties and Superconductivity of MSr2Nd2-xCexCu2O10-δ (M = Ta, Nb)[J]. Chin. Phys. Lett., 1992, 9(9): 326-329
[9] YU Zheng, DING Shiying, ZENG Zhaoyang, SHI Kexin, YAO Xixian, YANG Guang*, ZHAO Zhongxian*, WANG Hong**, WANG Zhuo**. Field and Temperature Dependence of Susceptibility of Single Crystal Bi2Sr2CaCu2O8[J]. Chin. Phys. Lett., 1992, 9(11): 326-329
[10] QIAN Yitai, HUANG He, TANG Kaibin, CAO Guanghan, CHEN Zuyao, ZHOU Guien*, WANG Nanlin**. Superconductivity at 50K in (Pb0.5Cd0.5)Sr2(LuxCa1-x)Cu2Oz[J]. Chin. Phys. Lett., 1992, 9(10): 326-329
[11] CHE Guangcan, SONG Chengyu, CHEN Xiaolong, LI Hua, XIONG Jiwu, ZHAO Zhongxian. Volume Changes of Some Superconductive Oxides in Sintering Process[J]. Chin. Phys. Lett., 1992, 9(1): 326-329
[12] GUO Shuquan, WU Peijun, ZHANG Jinlong, FAN Zhanguo*. Flux Creep and Pinning Potential in Melt-grown YBCO[J]. Chin. Phys. Lett., 1991, 8(9): 326-329
[13] JIANG Lianhua, MA Hong, REN Hongtao*, XIAO Lin*, HE Qing*, YU Qishan, HUANG Zhijun, YAN Shousheng. Thermopower of YBa2 Cu3 O7 Superconductor Prepared by Melt-Textured Growth Method[J]. Chin. Phys. Lett., 1991, 8(8): 326-329
[14] ZHOU Yisheng, MENG Xianren, LIN Mingzhu, LIN Zhenjin ZHOU Shanyuan, SANG Lihua, TU Qingyun, LIU Zhenxing. Sn Substitution of TlBaCaCuO Superconductors[J]. Chin. Phys. Lett., 1991, 8(6): 326-329
[15] SHI Tiansheng, WANG Geya, ZHU Jie, CHEN Yixing, ZHANG Jihua. Twin Domain Fragmentation in YBa2Cu3 O7-δ Under Electron Irradiation[J]. Chin. Phys. Lett., 1991, 8(10): 326-329
Viewed
Full text


Abstract