X‐ray and neutron diffraction have been utilized to analyze the crystalline and electronic structure of lanthanum orthoniobate substituted by antimony. Using X‐ray absorption spectroscopy and photoelectron spectroscopy, changes in the electronic structure of the material upon substitution have been analyzed. The structural transition temperature between fergusonite and scheelite phases for 30 mol% antimony substitution was found to be 15°C. Based on the neutron data, the oxygen nonstoichiometry was found to be relatively low. Moreover no influence on the position of the valence band maximum was observed. The influence of the protonation on the electronic structure of constituent oxides has been studied. Absorption data show that the incorporation of protonic defects into the lanthanum orthoniobate structure leads to changes in lanthanum electronic structure and a decrease in the density of unoccupied electronic states.

中文翻译：

---

锑取代的原铌酸镧质子导体–结构和电子性能

X射线和中子衍射已被用于分析被锑取代的原铌酸镧的晶体和电子结构。使用X射线吸收光谱法和光电子光谱法，分析了替代材料的电子结构变化。发现用于30摩尔％的锑取代的在铁镁铝石和白钨矿相之间的结构转变温度为15℃。根据中子数据，发现氧的非化学计量相对较低。此外，未观察到对价带最大值位置的影响。已经研究了质子化对组成氧化物的电子结构的影响。