IRON MIGRATION IN THE (Y,CA)BA2(CU,FE)O6+DELTA SYSTEM

被引：14

作者：

FELNER, I ^{[1
]}

HECHEL, D ^{[1
]}

RYKOV, A ^{[1
]}

RAVEAU, B ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,RACAH INST PHYS,IL-91904 JERUSALEM,ISRAEL

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.49.686

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mossbauer spectroscopy of Fe-57 in Y1-xCaxBa2Cu3-xFexO6+y for x = 0.09 was used to study the site distribution of Fe in oxygen-rich and oxygen-reduced samples. In the superconducting sample (y = 1), (T(c) = 85 K) more than 90% of the Fe resides in the Cu(1) site. For y = 0 the Cu(2) site orders magnetically at T(N) = 425 K. Based on the typical behavior of Fe in the magnetic Cu(2) site, we find that about 80% of the Fe occupies this site, thus we prove migration of Fe from Cu(1) to Cu(2) sites during depletion of oxygen at elevated temperatures. The spectrum above T(N) is smeared because of a distribution in the quadrupole interactions.

引用

页码：686 / 689

页数：4

共 14 条

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