The crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln=Pr, Sm, Eu, Gd and Dy)

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	The crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln=Pr, Sm, Eu, Gd and Dy)
	J. R. Min; J. K. Liang; C. Wang; C. Dong; G. H. Rao
	1996
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	8 期号:16 页码:2869-2879
摘要	In this paper we report the crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln = Pr, Sm Eu, Gd and Dy). The lattice parameters of these compounds decrease nearly linearly with the decrease of the average ionic radius of the rare-earth element (Ln, Ce), and the superconducting transition temperatures of these compounds increase as the ionic radius of the rare-earth element Ln decreases from Pr to Gd. (Pb0.5Cd0.5)(Sr0.9Gd0.1)(2)(Gd0.7Ce0.3)(2)Cu2O9 has the highest T-c-values (T-c,T-onset = 49 K, T-c,T-zero = 38 K) which, to our knowledge, are also the highest T-c-values reported for any 1222 phase. The superconductivity of the system is affected by many factors: (i) the coupling effect between CuO2 planes; (ii) the charge-carrier concentration in the CuO2 planes; and (iii) the degree of buckling of CuO2 planes.
部门归属	acad sinica,int ctr mat phys,shenyang 110015,peoples r china.;min, jr (reprint author), chinese acad sci,inst phys,natl lab supercond,pob 603,beijing 100080,peoples r china
关键词	Cu-o Pb System Member Family
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38370
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. R. Min,J. K. Liang,C. Wang,et al. The crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln=Pr, Sm, Eu, Gd and Dy)[J]. Journal of Physics-Condensed Matter,1996,8(16):2869-2879.
APA	J. R. Min,J. K. Liang,C. Wang,C. Dong,&G. H. Rao.(1996).The crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln=Pr, Sm, Eu, Gd and Dy).Journal of Physics-Condensed Matter,8(16),2869-2879.
MLA	J. R. Min,et al."The crystal structure and superconductivity of (Pb0.5Cd0.5)(Sr(0.9)Ln(0.1))(2)(Ln(0.7)Ce(0.3))(2)Cu2O9 (Ln=Pr, Sm, Eu, Gd and Dy)".Journal of Physics-Condensed Matter 8.16(1996):2869-2879.