Тип публикации: статья из журнала
Год издания: 2015
Идентификатор DOI: 10.1016/j.jallcom.2015.08.017
Ключевые слова: Copper selenide, Magnetic nanoparticles, Visible magnetic circular dichroism, Chromium, Decomposition, Dichroism, Electron transitions, Electronic structure, Magnetism, Metal nanoparticles, Nanobelts, Nanoparticles, Nanorods, Powder metals, Spectroscopy, Synthesis (chemical), Different precursors, Magnetic circular dichroisms, Magnetic nano-particles, Precursor composition, Processing parameters, Single-crystalline, Synthesized powder, Nanomagnetics
Аннотация: Cu1-xFexCr2Se4 nanoparticles with x = 0, 0.2, and 0.4 were synthesized via thermal decomposition of metal nitrate or chloride salts and selenium powder using different precursor compositions and processing details. Single crystalline nano-belts or nano-rods coexist in the synthesized powder samples with hexagon-shaped plates in depПоказать полностьюendence on the precursor composition. The belts gathered into conglomerates forming "hierarchical" particles. Visible magnetic circular dichroism (MCD) of Cu1-xFexCr2Se4 nanoparticles embedded into a transparent matrix was investigated for the first time. The similarity of the MCD spectra of all samples showed the similarity of the nanoparticles electronic structure independent of their morphology. Basing on the MCD spectral maxima characteristics, electron transitions from the ground to the excited states were identified with the help of the conventional band theory and the multi-electron approach. (C) 2015 Elsevier B.V. All rights reserved.
Журнал: JOURNAL OF ALLOYS AND COMPOUNDS
Выпуск журнала: Vol. 650
Номера страниц: 887-895
ISSN журнала: 09258388
Место издания: LAUSANNE
Издатель: ELSEVIER SCIENCE SA