| CRYSTAL-STRUCTURE AND SUPERCONDUCTIVITY OF NEW PB-BASED 1222-CUPRATE (PB0.5CD0.5)(SR0.9EU0.1)(2)(EU0.7CE0.3)(2)CU2O9+DELTA | |
| J. R. Min; J. K. Liang; C. Wang; F. Wu; H. Chen; C. Dong; G. H. Rao | |
| 1995 | |
| Source Publication | Journal of Physics-Condensed Matter
 |
| ISSN | 0953-8984 |
| Volume | 7Issue:30Pages:5975-5982 |
| Abstract | A new superconductor (Pb0.5Cd0.5)(Sr0.9Eu0.1)(2)(Eu0.7Ce0.3)(2)Cu2O9+delta has been prepared. The compound has higher T-c values when it is synthesized in Oz than in air. Besides, the O-2-synthesized sample exhibits metallic behaviour, while the air-synthesized sample exhibits semiconducting behaviour in their normal state. It has a typical metal-insulator transition with the increase of the carrier concentration, which is proven by our calculation results of the bond valence sums of the Cu ions in the conducting CuO2 planes. (Pb0.5Cu0.5)(Sr7/8Eu1/8)2(Eu3/4Ce1/4)2Cu(2)O(9) is an analogous compound of (Pb,Cd)-1222. (Pb,Cd)-1222 has higher superconducting transition temperatures than (Pb,Cu)-1222. This difference can be explained from the viewpoint of charge transfer between the charge reservoir (Pb,Cu)O layers and the conducting CuO2 planes. The crystal structure of (Pb0.5Cd0.5)(Sr(0.9)Eu0. I)(2)(Eu0.7Ce0.3)(2)Cu2O9+delta has been refined by the Rietveld method. The refinement results indicate that both (Pb, Cd) and O(3) in the (Pb, Cd)O layer are displaced from their ideal sites. |
| description.department | acad sinica,int ctr mat phys,shenyang 110015,peoples r china. chinese acad sci,inst phys,natl lab superconduct,beijing 100080,peoples r china.;min, jr (reprint author), chinese acad sci,inst phys,beijing 100080,peoples r china |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/38639 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | J. R. Min,J. K. Liang,C. Wang,et al. CRYSTAL-STRUCTURE AND SUPERCONDUCTIVITY OF NEW PB-BASED 1222-CUPRATE (PB0.5CD0.5)(SR0.9EU0.1)(2)(EU0.7CE0.3)(2)CU2O9+DELTA[J]. Journal of Physics-Condensed Matter,1995,7(30):5975-5982. |
| APA | J. R. Min.,J. K. Liang.,C. Wang.,F. Wu.,H. Chen.,...&G. H. Rao.(1995).CRYSTAL-STRUCTURE AND SUPERCONDUCTIVITY OF NEW PB-BASED 1222-CUPRATE (PB0.5CD0.5)(SR0.9EU0.1)(2)(EU0.7CE0.3)(2)CU2O9+DELTA.Journal of Physics-Condensed Matter,7(30),5975-5982. |
| MLA | J. R. Min,et al."CRYSTAL-STRUCTURE AND SUPERCONDUCTIVITY OF NEW PB-BASED 1222-CUPRATE (PB0.5CD0.5)(SR0.9EU0.1)(2)(EU0.7CE0.3)(2)CU2O9+DELTA".Journal of Physics-Condensed Matter 7.30(1995):5975-5982. |
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