S. Fatemeh Shams

Forschungszentrum Jülich · Peter Grünberg Institute (PGI-6)

Decoration with Pd clusters increases the magnetic heating ability of cobalt ferrite (CFO) nanoparticles by a factor of two. The origin of this previous finding is unraveled by element-specific X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) combined with atomic multiplet simulations and density functional theory (DFT) ca...

Loss mechanisms in fluid heating of cobalt ferrite (CFO) nanoparticles and CFO–Pd heterodimer colloidal suspensions are investigated as a function of particle size, fluid concentration and magnetic field amplitude. The specific absorption rate (SAR) is found to vary with increasing particle size due to a change in dominant heating mechanism from su...

The case of palladium(II) ions in molecular polyoxopalladates highlights the importance of accounting not only for nearest neighbour atoms or ions in order to understand, model or predict magnetic characteristics. Here, using site-specific soft X-ray magnetic circular dichroism (XMCD), the effects of different bond lengths, delocalization of 4d ele...

Polyoxopalladates hosting 3d, 4d or 4f central ions form a new class of molecular materials with well-defined, tunable morphology and ions coordination to be considered as model systems for basic research. We investigated the isotropic x-ray absorption near-edge structure (XANES), x-ray magnetic circular dichroism (XMCD), and x-ray magnetic linear...

Magnetic-plasmonic heterodimer nanostructures synergistically present excellent magnetic and plasmonic characteristics in a unique platform as a multipurpose medium for recently invented biomedical applications, such as magnetic hyperthermia, photothermal therapy, drug delivery, bioimaging, and biosensing. In this review, we briefly outline the les...

In the present study, multistep formation mechanism and synthesis reaction pathway of therapeutic magnetite nanoplatforms during a modified chemical coprecipitation method were identified. Critical reaction steps were considered through the study of pH variation trend as a function of structural, microstructural, and magnetic properties. Structural...

Structural properties of cobalt ferrite nanoparticles have significant effects on its magnetic behavior. In current study, we thoroughly scrutinized and optimized the structural characteristics of CoFe2O4 nanoparticles and the correlation with its magnetic properties as a function of the synthesis parameters using Rietveld structure refinement. Nan...

In this work, the multifunctional temperature-sensitive magnetoliposomal nanostructures are designed and fabricated by investigating the effects of numerous parameters such as buffers types, concentration, pH amounts as well as liposomes compositions, and features of conjugated magnetic nanoparticles. In order to analyze different properties of syn...

The performance of magnetic nanoparticles in different applications is severely depended on their size characteristics, so the study of effective parameters on these properties can play significant roles in qualifications of nanoparticles. In present work, some important factors on size features of CoFe2O4 superparamagnetic nanoparticles include th...

In current work, the (Pb91La9)(Zr60Ti40)O3 electroceramic known as PLZT (9/60/40) was synthesized by mechanical alloying technique. The chemical composition assessments and structural properties of milled samples at different milling time were studied by X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyses. Moreover, the structural evaluat...

In recent years, although many review articles have been presented about bioapplications of magnetic nanoparticles by some research groups with different expertise such as chemistry, biology, medicine, pharmacology, and materials science and engineering, the majority of these reviews are insufficiently comprehensive in all related topics like magne...

In present work, in order to study the effects of synthesis techniques on dielectric properties, the BNBT lead-free piezoceramics with (Bi0.5Na0.5)0.94Ba0.06TiO3 stoichiometry (called as BNBT6) were synthesized by mechanical alloying (MA) and conventional mixed oxides methods. The structural, microstructural, and dielectric properties were carried...