Mixed valency versus covalency in rare-earth core-electron spectroscopy.
Mixed valency versus covalency in rare-earth core-electron spectroscopy.
复制标题
稀土核心电子能谱中的混合价与共价。
DOI：
--
复制
发表时间：
1987
影响因子：
8.6
通讯作者：
Sampathkumaran
中科院分区：
文献类型：
--
作者：
Kaindl;Wertheim;Schmiester;Sampathkumaran
比较浅核能级与深核能级的光谱学，可以区分稀土体系中的混合价和共价。区分这些光谱的决定性参数是核心孔和4f壳层之间的库仑相互作用。该方法证实了化合物${mathm {CeF}}_{4}$是四价的，但不否认4f字符的共价混合物进入价带。
A comparison of photoemission from shallow core levels with deep core-level spectroscopies allows a distinction between mixed valency and covalency in rare-earth systems. The determinative parameter distinguishing these spectroscopies is the Coulomb interaction between the core hole and the 4f shell. This approach confirms that the compound ${mathrm{CeF}}_{4}$ is tetravalent, but does not deny the covalent admixture of 4f character into the valence band.