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Peculiarities of $$^{57}$$Fe NMR Spectrum in Micro- and Nanocrystalline Europium Orthoferrites
Applied Magnetic Resonance ( IF 1 ) Pub Date : 2020-08-28 , DOI: 10.1007/s00723-020-01224-y
Anastasia Sklyarova , Vadim I. Popkov , Ivan V. Pleshakov , Vladimir V. Matveev , Helena Štěpánková , Vojtěch Chlan

NMR spectra of 57-Fe dispersed europium orthoferrite in powder samples with micro- and nanocrystalline particles were studied for the first time. The material was synthesized by glycine-nitrate combustion, which allowed to obtain the specimens with granular diameters of 60 nm(nano-EuFeO3) and 1.5 um (micro-EuFeO3). It was found out that the spectra are more complex than could be expected for a compound with a single crystallographic position of Fe3+ ions, and it was also identified that there is a noticeable difference in samples with different fineness. Assumptions about the possible physical nature of the observed effects are made.

中文翻译:

微晶和纳米晶铕正铁氧体中 $$^{57}$$Fe 核磁共振谱的特性

首次研究了具有微晶和纳米晶颗粒的粉末样品中 57-Fe 分散的正铁氧体铕的 NMR 谱。该材料通过甘氨酸-硝酸盐燃烧合成,可以获得粒径为60 nm(纳米-EuFeO3)和1.5 um(微-EuFeO3)的样品。结果表明,对于具有单一晶体学位置的 Fe3+ 离子的化合物,光谱比预期的更复杂,并且还确定了不同细度的样品存在显着差异。对观察到的效应的可能物理性质进行了假设。
更新日期:2020-08-28
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