In the last two decades, structure and properties of Ruddlesden–Popper phase (RP) A₂BO₄ oxides with K₂NiF₄ structure, have been widely investigated. But to the best of our knowledge, no review article is available in the literature on recent studies on these oxides. Therefore, in this article, recent studies on structure, electrical, dielectric, and optical properties of these oxides have been reviewed. Special attention is put on to highlight the effect of doping and oxygen stoichiometry on the structure and properties of these oxides. Further, important applications of these oxides have also been mentioned in this article.

中文翻译：

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Ruddlesden-Popper相A 2 BO 4氧化物：关于结构，电，介电和光学性质的最新研究

在最近的二十年中，人们广泛研究了具有K ₂ NiF ₄结构的Ruddlesden-Popper相（RP）A ₂ BO ₄氧化物的结构和性能。但是据我们所知，关于这些氧化物的最新研究文献中没有评论文章。因此，在本文中，对这些氧化物的结构，电，介电和光学性质的最新研究进行了综述。应特别注意突出掺杂和氧化学计量对这些氧化物的结构和性能的影响。此外，本文还提到了这些氧化物的重要应用。