SOFT-X-RAY-ABSORPTION STUDIES OF THE LOCATION OF EXTRA CHARGES INDUCED BY SUBSTITUTION IN CONTROLLED-VALENCE MATERIALS
SOFT-X-RAY-ABSORPTION STUDIES OF THE LOCATION OF EXTRA CHARGES INDUCED BY SUBSTITUTION IN CONTROLLED-VALENCE MATERIALS
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DOI：
10.1103/physrevb.44.5419
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发表时间：
1991-09-15
影响因子：
3.7
通讯作者：
TSUDA, N
中科院分区：
文献类型：
--
作者：
ABBATE, M;DEGROOT, FMF;TSUDA, N
我们提出了高分辨率的2 p X射线吸收光谱从三维过渡金属M在三个系列的pseudobinary和pseudotternary氧化物。我们展示了如何在光谱内的多重态的详细形状可以用来确定M离子的价态。的光谱的早期过渡金属化合物显示出戏剧性的变化作为一个功能的替代由于M 3d占有率的变化，这表明额外的空穴或电子主要位于3d-金属网站。这与后过渡金属化合物的光谱行为形成强烈对比，后者由取代引起的额外电荷进入氧状态。
We present high-resolution 2p x-ray-absorption spectra from 3d transition metals M in three series of pseudobinary and pseudoternary oxides. We show how the detailed shape of the multiplet within the spectra can be used to determine the valence of the M ions. The spectra of the early-transition-metal compounds show dramatic changes as a function of substitution due to changes in the M 3d occupancy, indicating that the extra holes or electrons are located predominantly at the 3d-metal sites. This contrasts strongly with the behavior of the spectra of late-transition-metal compounds, for which the extra charges induced by substitution go to oxygen states.