THE 1ST DOPING OF LEAD(2+) INTO THE BISMUTH OXIDE LAYERS OF THE AURIVILLIUS OXIDES

被引:59
作者
MILLAN, P [1 ]
CASTRO, A [1 ]
TORRANCE, JB [1 ]
机构
[1] IBM CORP,DIV RES,ALMADEN RES CTR,SAN JOSE,CA 95120
关键词
OXIDES; SUPERCONDUCTORS; AURIVILLIUS PHASES; BISMUTH; LEAD; NIOBIUM;
D O I
10.1016/0025-5408(93)90079-S
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Taking as the starting material the Aurivillius oxide Bi2SrNb2O9, it has been demonstrated for the first time that the (Bi2O2)2+ layers can be doped with the Pb2+ cation, which also possesses a stereochemically active lone pair. Samples of composition Bi2-xPbxSrNb2Oy have been prepared and yield a solid solution over the entire range O less-than-or-equal-to x less-than-or-equal-to 2. The substitution of Pb2+ is accompanied by the occurrence of oxygen vacancies, in order to compensate the reduced cation charge.
引用
收藏
页码:117 / 122
页数:6
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