Magnetic and magneto-optical properties of Fe3O4 nanoparticles modified with Ag
作者： D.A. Petrov , R.D. Ivantsov , S.M. Zharkov , D.A. Velikanov , M.S. Molokeev
DOI: 10.1016/J.JMMM.2019.165692
关键词:
摘要: Abstract Effect of Ag inclusions on magnetic properties and circular dichroism (MCD) Fe3O4 nanoparticles (NPs) in the mixed system NPs dependence relative concentration components is presented. The samples were synthesized by thermal decomposition mixture constant Fe(NO3)3·9H2O varied AgNO3. powdered consisted located very close with each other, most cases bordered nanocrystals. introducing does not effect, practically, morphology size distribution. At same time, cause a decrease magnetization shift blocking temperature to lower temperatures, both approximately proportional concentration. Most significant changes are revealed MCD spectra energy region 1.2–2.2 eV. We have discussed influence features terms charge-transfer electron transitions.
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