Magnetic and magneto-optical properties of Fe3O4 nanoparticles modified with Ag

Characterization of the iron oxide phases formed during the synthesis of core–shell FexOy@C nanoparticles modified with Ag

“…In our recent paper [24], we studied the magnetic and magneto-optical properties of the Fe 3 O 4 NPs modified with Ag and revealed noticeable changes in the magnetic and magneto-optical properties with the change of the relative concentration of the Fe 3 O 4 and Ag constituents in the sample which were ascribed to the interfacial effects at the boundaries of the Fe 3 O 4 and Ag NPs. Here, we extended the same approach to study a mixed system including iron oxide (Fe x O y )-carbon core-shell NPs with different x and y values and Ag NPs at the changing concentration.…”

“…To fabricate Fe 3 O 4 @C NPs we used the one-step process of thermal decomposition [14]. In this connection, along with the widely used methods of x-ray diffraction, electron microscopy, and magnetometry, we applied, as in [24], spectroscopy of magnetic circular dichroism (MCD) that informs about the structure of excited electronic states of matter. Besides, the MCD spectra of magnetite and maghemite phases are quite different [25] which allows one to distinguish these two phases very well.…”

Magnetic Core-Shell Iron Oxides-Based Nanophotocatalysts and Nanoadsorbents for Multifunctional Thin Films

“…The corresponding thin films deposited on the glass substrates were characterized for magneto-optical measurements by magnetic circular dichroism (MCD) using a JASCO 815 spectrometer equipped with a static magnet of 1.5 T and circular polarized light at a rate of 50 kHz. The MCD value was measured in the spectral range 700–300 nm at the temperature 300 K [ 47 ].…”

Overview on magnetically recyclable ferrite nanoparticles: synthesis and their applications in coupling and multicomponent reactions

“…These prepared nanoparticles were further studied for their magnetic and magneto-optical properties. 80 Yang et al have reported the synthesis of Fe 3 O 4 /Au composites by seed deposition method for catalysing the reduction of 4-nitrophenols. 81 Alzahrani et al have reported the coating of Fe 3 O 4 nanoparticles with Ag by using co-precipitation method from FeSO 4 ·7H 2 O and AgNO 3 and have explored its catalytic properties for photodegradation of eosin Y for the purification of industrial waste of dyes.…”

“…79 Petrov et al have used thermal decomposition method to synthesize Fe 3 O 4 nanoparticles modied with Ag by reacting Fe(NO 3 ) 3 $9H 2O and AgNO 3 at high temperature. These prepared nanoparticles were further studied for their magnetic and magneto-optical properties 80. Yang et al have reported the synthesis of Fe 3 O 4 /Au composites by seed deposition method for catalysing the reduction of 4-nitrophenols 81.…”