Pakalniškis Andrius, Alikin Denis O, Turygin Anton P, Zhaludkevich Alexander L, Silibin Maxim V, Zhaludkevich Dmitry V, Niaura Gediminas, Zarkov Aleksej, Skaudžius Ramūnas, Karpinsky Dmitry V, Kareiva Aivaras
Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania.
School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia.
Materials (Basel). 2022 Jan 29;15(3):1048. doi: 10.3390/ma15031048.
The structural state and crystal structure of LuScFeO (0 ≤ ≤ 1) compounds prepared by a chemical route based on a modified sol-gel method were investigated using X-ray diffraction, Raman spectroscopy, as well as scanning electron microscopy. It was observed that chemical doping with Sc ions led to a structural phase transition from the orthorhombic structure to the hexagonal structure via a wide two-phase concentration region of 0.1 < < 0.45. An increase in scandium content above 80 mole% led to the stabilization of the non-perovskite bixbyite phase specific for the compound ScFeO. The concentration stability of the different structural phases, as well as grain morphology, were studied depending on the chemical composition and synthesis conditions. Based on the data obtained for the analyzed samples, a composition-dependent phase diagram was constructed.
采用X射线衍射、拉曼光谱以及扫描电子显微镜等方法，对通过基于改进溶胶-凝胶法的化学路线制备的LuScFeO（0≤≤1）化合物的结构状态和晶体结构进行了研究。观察到，用Sc离子进行化学掺杂导致结构从正交结构通过0.1<>0.45的宽两相浓度区域转变为六方结构。钪含量超过80摩尔%时，会导致化合物ScFeO特有的非钙钛矿方铁锰矿相稳定。根据化学成分和合成条件，研究了不同结构相的浓度稳定性以及晶粒形态。基于分析样品获得的数据，构建了成分依赖的相图。
