华中科技大学学报（自然科学版）2001，Vol.29Issue(1)：53-55,3.
铁离子在Tl系1223超导相中的分布研究
The Distribution of Iron Ions in Tl-system 1223 Phase Superconductor
摘要
Abstract
57Fe Mossbauer measurements are made by the use of the samples of Tl-system 1223 phase superconductors with nominal composition (Tl0.5Pb0.5)(Sr0.8Ba0.2)2Ca2(Cu1-xFe x)3Oy (x=0.01, 0.02, 0.03) at the room temperature. The spectra are deconvoluted into four quadrupole doublets with quadrupole splitting about 1.40 mm/s, 1.12 mm/s, 0.55 mm/s, 1.90 mm/s respectively. This implies that the Fe3+ occupies the different local lattice sites. By using the point char ge-effective valence model, the electric gradient (EFG) of different Fe localized sites are calculated, and the Fe3+ site assignment is proposed.关键词
Tl系1223相/穆斯堡尔谱/点电荷-有效价键模型分类
数理科学引用本文复制引用
王耘波,周文利,于军,魏龙..铁离子在Tl系1223超导相中的分布研究[J].华中科技大学学报（自然科学版）,2001,29(1):53-55,3.基金项目
中国科学院核分析技术开放实验室基金项目. （）
