CHARACTERIZATION OF A NEW PB-BASED 1222-CUPRATE PB(SR1.2LA0.8)GD2CU2O9.06

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	CHARACTERIZATION OF A NEW PB-BASED 1222-CUPRATE PB(SR1.2LA0.8)GD2CU2O9.06
	J. R. Min; J. K. Liang; C. Wang; F. Wu; C. Dong; G. H. Rao
	1995
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	7 期号:30 页码:L405-L410
摘要	A new compound Pb(Sr(1.2)L(0.8))Gd2Cu2O9.06 has been synthesized and characterized in this letter. The Pb ions in the rock-salt-type monolayer of this compound occur in the form of mixed valence states, i.e., Pb4+ and Pb2+, and the average cationic valence is 3.14, close to that in (Pb0.5Cd0.5)Sr2YCu2O7. It seems to us that the single-Pb-layer Pb-based layered compounds are stable only when the average cationic valence in this layer is close to three. The crystal structure refinement results indicate that the PbO layer is highly distorted, and no Cu ions enter this monolayer. The high distortion of the PbO layer makes the Pb-1222 phase preferentially orientate more readily. This compound does not superconduct. The nonsuperconductivity is not caused by low charge carrier concentration. It may be caused by the Gd2O2 layers, which affect not only the buckling degree of conducting CuO2 planes but the coupling effect between adjacent CuO2 planes as well.
部门归属	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
关键词	Crystal-structure Cu-o Copper Oxides Family Superconductivity System Member Ln
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38640
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. CHARACTERIZATION OF A NEW PB-BASED 1222-CUPRATE PB(SR1.2LA0.8)GD2CU2O9.06[J]. Journal of Physics-Condensed Matter,1995,7(30):L405-L410.
APA	J. R. Min,J. K. Liang,C. Wang,F. Wu,C. Dong,&G. H. Rao.(1995).CHARACTERIZATION OF A NEW PB-BASED 1222-CUPRATE PB(SR1.2LA0.8)GD2CU2O9.06.Journal of Physics-Condensed Matter,7(30),L405-L410.
MLA	J. R. Min,et al."CHARACTERIZATION OF A NEW PB-BASED 1222-CUPRATE PB(SR1.2LA0.8)GD2CU2O9.06".Journal of Physics-Condensed Matter 7.30(1995):L405-L410.