Electronic distribution in the Ba2FeMoO6 double perovskite; the A-site size effect
Electronic distribution in the Ba2FeMoO6 double perovskite; the A-site size effect
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Ba2FeMoO6 双钙钛矿中的电子分布；
DOI：
10.1088/0953-8984/14/47/333
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
B. Raveau
中科院分区：
文献类型：
--
作者：
N. Nguyen;F. Sriti;C. Martin;J. Che;A. Ducouret;F. Studer;B. Raveau
用中子粉末衍射研究了双钙钛矿结构的Ba_2FeMoO_6，M？ssbauer谱和x射线吸收谱，并与Sr_2FeMoO_6进行了比较。它示出的A-位点阳离子的大小有很大的影响后的性质的低温状态，有利于多数Fe 2 +/Mo 6+对的情况下的钡和Fe 3 +/Mo 5+对的情况下的锶。在这两种情况下，电子转移出现T的减少，解释为少数t2 g的存在？窄带，电子在其中流动。
The double perovskite Ba2FeMoO6 has been studied by neutron powder diffraction, M?ssbauer spectrometry and x-ray absorption spectroscopy, and is compared with Sr2FeMoO6. It is shown that the size of the A-site cation has a large effect upon the nature of the low-temperature state, favouring the majority Fe2+/Mo6+ pair in the case of barium and the Fe3+/Mo5+ pair in the case of strontium. In both cases, an electronic transfer appears as T decreases, interpreted as the existence of a minority t2g ? narrow band, where the electron is itinerant.
影响因子：
64.8
作者：
Kobayashi, KL;Kimura, T;Tokura, Y
通讯作者：
Tokura, Y