A NEW FAMILY OF PB-BASED-1222 CUPRATES PB(SR,LA)(2)LN(2)CU(2)O(Z) (LN=GD, DY, EU, AND PR)

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	A NEW FAMILY OF PB-BASED-1222 CUPRATES PB(SR,LA)(2)LN(2)CU(2)O(Z) (LN=GD, DY, EU, AND PR)
	J. R. Min; J. K. Liang; H. Jin; C. Wang; H. Chen; Y. D. Yu; C. Dong; G. H. Rao
	1995
发表期刊	Physica C-Superconductivity and Its Applications
ISSN	0921-4534
卷号	249 期号:1-2 页码:196-201
摘要	A series of new Pb-based 1222 cuprates of the general formula Pb(Sr,La)(2)Ln(2)Cu(2)O(z) (Ln=Gd, Dy, Eu, and Pr) has been reported in this paper. In this kind of compounds, cations in the rock-salt-type monolayer completely consist of Pb ions, but the iodometric titration results indicate that the Pb ions in the rock-salt-type monolayer actually exist in the form of mixed valence states, i.e., Pb4+ and Pb2+, and the proportion of Pb4+ and Pb2+ is close to 1:1. The Pb-1222 phases Pb(Sr2-xLax) Ln(2)Cu(2)O(z) are very sensitive to sintering temperature and atmosphere, as well as the Sr content. For example, pure Pb-1222 can be only obtained at 920 degrees C in air for the composition Pb(Sr1.2La0.8) Gd2Cu2Oz. All these Pb-1222 phases are not superconducting.
部门归属	acad sinica,int ctr mat phys,shenyang 110015,peoples r china. univ sci & technol china,dept mat sci & engn,hefei 230026,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
关键词	Crystal-structure Cu-o System Superconductivity
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38638
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,H. Jin,et al. A NEW FAMILY OF PB-BASED-1222 CUPRATES PB(SR,LA)(2)LN(2)CU(2)O(Z) (LN=GD, DY, EU, AND PR)[J]. Physica C-Superconductivity and Its Applications,1995,249(1-2):196-201.
APA	J. R. Min.,J. K. Liang.,H. Jin.,C. Wang.,H. Chen.,...&G. H. Rao.(1995).A NEW FAMILY OF PB-BASED-1222 CUPRATES PB(SR,LA)(2)LN(2)CU(2)O(Z) (LN=GD, DY, EU, AND PR).Physica C-Superconductivity and Its Applications,249(1-2),196-201.
MLA	J. R. Min,et al."A NEW FAMILY OF PB-BASED-1222 CUPRATES PB(SR,LA)(2)LN(2)CU(2)O(Z) (LN=GD, DY, EU, AND PR)".Physica C-Superconductivity and Its Applications 249.1-2(1995):196-201.