FE-57 MOSSBAUER STUDY OF HIGH-TC Y-BA-CU OXIDE SUPERCONDUCTORS

被引：17
|
作者：
NASU, S
KITAGAWA, H
YOSHIDA, M
ODA, Y
UEDA, K
KOHARA, T
SHINJO, T
ASAYAMA, K
FUJITA, FE
机构：
[1] HIMEJI INST TECHNOL,HIMEJI,HYOGO 67122,JAPAN
[2] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN
来源：
HYPERFINE INTERACTIONS | 1990年 / 55卷 / 1-4期
关键词：
D O I：
10.1007/BF02397171
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
57Fe Mössbauer measurements have been performed for Fe-doped YBa2 (Cu1-x Fex)3O7-v (x=0.005-0.10) superconducting oxides. Fe atoms mainly substitute at Cul chain sites and the fraction of Fe at Cu2 plane sites is discussed thermodynamically. The spin direction of Fe at Cu2 was determined to be normal to the c-axis using an oxygen deficient specimen having a strong texture along the c-axis. A magnetically broadened spectrum at 4.2 K for Fe at Cul is compared with a simulated one which takes the distribution of hyperfine fields into account. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.
引用
收藏
页码：1355 / 1362
页数：8
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