hv = 40.8 eV) investigation of the 4f emission in a number of Lucompounds (LuCo 2 , LuRh 2 , LuRh, Lu 7 Rh 3 ) is reported. The closed 4f shell and the large (> 0.7 eV) surfacecore-levelshifts allow the spectral bulk and surface components to be accurately disentangled. The observed bindingenergyshifts of the bulk and surface4f levels relative to the pure Lu are within 0.4 and 0.26 eV respectively
摘要 报道了对多种 Lu 化合物(LuCo 2 、LuRh 2 、LuRh、Lu 7 Rh 3 )中 4f 发射的 He II (hv = 40.8 eV) 研究。封闭的 4f 壳和大 (> 0.7 eV) 的表面核能级偏移允许准确地解开光谱体积和表面分量。观察到的本体和表面 4f 能级相对于纯 Lu 的结合能变化分别在 0.4 和 0.26 eV 之内。根据 Johansson 和 Martensson 完全筛选的岩心孔模型讨论了结果,评估了 Miedema 半经验方案内的化合物形成热。