EU-151 MOSSBAUER STUDIES ON EU1+XBA2-XCU3O7+DELTA OXIDE SYSTEMS

被引：0

作者：

CIANCHI, L ^{[1
]}

DELGIALLO, F ^{[1
]}

PIERALLI, F ^{[1
]}

MANCINI, M ^{[1
]}

SCIORTINO, S ^{[1
]}

SPINA, G ^{[1
]}

机构：

[1] UNIV FLORENCE,DIPARTMENTO FIS,I-50139 FLORENCE,ITALY

来源：

HYPERFINE INTERACTIONS | 1991年 / 66卷 / 1-4期

关键词：

D O I：

10.1007/BF02395890

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：

Mossbauer parameters of Eu-151 in Eu1+xBa2-xCu3O7 + delta have been studied as a function of temperature, for x = 0.15 and x = 0.25. The areas of the absorption spectra for the two samples are almost equal. This could mean that the f-Mossbauer factor for Eu-151 at the barium sites is much smaller than that for Eu-151 at the rare earth sites, i.e. we only observe the spectra of the latter sites. According to this, the fits of the spectra with a single quadrupolar pattern and with two quadrupolar patterns have given equivalent chi-2 values.

引用

页码：387 / 391

页数：5

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