Перевод заглавия: Мёссбауэровская и МКД-спектроскопия наночастиц Fe3S4, синтезированных методом термического разложения с двумя разными ПАВ
Кл.слова (ненормированные):
Greigite -- Thermal decomposition -- Surfactants -- Mössbauer effect -- FT-IR spectra -- Magnetic circular dichroism
Аннотация: Greigite (Fe3S4) nanoparticles (NPs) were fabricated by the thermal decomposition method using two different surfactants: oleylamine (OLA) and 1-hexadecylamine (HDA). In both cases, the synthesized NPs were characterized as the Fe3S4 nanocrystals with minor inclusions of Fe9S11 phase. FT-IR spectroscopy and thermo-gravimetric analysis allow concluding about OLA or HDA shells covering magnetic core of NPs. Mossbauer spectra has revealed deviations of iron ions distribution among crystal positions from that presented in literature for pure greigite. In accordance with these deviations, the pronounce changes are observed in the magnetic circular dichroism (MCD) spectra which manifest themselves as the spectrum shift to higher energies of electromagnetic waves and redistribution of the MCD maximum intensities. These effects are associated with a change in the density of electronic states in the samples due to the redistribution of iron ions between octahedral and tetrahedral positions in nanocrystals under the influence of surfactants.
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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RASKrasnoyarsk 660036, Russian Federation
Department of Applied Physics, National Pingtung University, Pingtung City, Pingtung County 90003, Taiwan
Siberian Federal UniversityKrasnoyarsk 660041, Russian Federation
Доп.точки доступа:
Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Lin, C. -R.; Ivanova, O. S.; Иванова, Оксана Станиславовна; Altunin, R. R.; Knyazev, Yu. V.; Князев, Юрий Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Chen, Y. -Z.; Lin, E. -S.; Chen, B. -Y.; Shestakov, N. P.; Шестаков, Николай Петрович; Edelman, I. S.; Эдельман, Ирина Самсоновна