TIME-DIFFERENTIAL PERTURBED-ANGULAR-CORRELATION AND EMISSION MOSSBAUER STUDIES ON RU-99 DISPERSED IN YBA2CU3O6.8 AND YBA2CU3O6

被引：3
|
作者：
OHKUBO, Y
KOBAYASHI, Y
HARASAWA, K
AMBE, S
OKADA, T
AMBE, F
ASAI, K
SHIBATA, S
机构：
[1] UNIV ELECTROCOMMUN,CHOFU,TOKYO 182,JAPAN
[2] UNIV TOKYO,INST NUCL STUDY,TANASHI,TOKYO 188,JAPAN
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 26期
关键词：
D O I：
10.1021/j100026a029
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The hyperfine interactions at Ru-99(<--Rh-99) dispersed in YBa2Cu3O6.8 and YBa2Cu3O6 were studied by means of time-differential perturbed-angular-correlation (TDPAC) and emission Mossbauer spectroscopy. The TDPAC and Mossbauer measurements show that Ru ions are in the tetravalent state and exclusively occupy the Cu-1 sites, which form one-dimensional Cu-O chains in the orthorhombic phase. The oxygen coordinations around the Ru ions are discussed on the basis of the observed electric field gradients at Ru-99 in YBa2Cu3O6.8 and YBa2Cu3O6.
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收藏
页码：10629 / 10634
页数：6
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