N. Dogan

Comparison of some magnetic multicomponent nanoparticles for biomedical applications

Magnetic nanoparticles (NPs) are increasingly important in many biomedical applications, such as drug delivery, hyperthermia, and magnetic resonance imaging (MRI) contrast enhancement. To build the most effective magnetic nanoparticle systems for various biomedical applications, characteristics of particle, including size, surface chemistry, magnetic properties, and toxicity have to be fully investigated. In this work, comparison of some magnetic multicomponent nanoparticles for bio-medical applications is discussed. In this investigation, multi-component ferrite nanoparticles were prepared by the hydrothermal synthesis, sol-gel, and solid state methods. In addition, x-ray powder diffractometry (XRD), scanning electron microscopy (SEM), and Quantum Design Physical Properties System (PPMS) were used to characterize the structural, morphological and magnetic properties of the nanoparticles. The size and crystal structure of the nanoparticles were characterized by using XRD results. The magnetic properties of the samples were performed for each sample at ± 1.5 T by PPMS.

Effects of number of magnet in halbach magnet system for producing homogeneous magnetic field

Effects of number of magnet in Halbach magnet system for producing homogeneous magnetic field It has been demonstrated that the field homogeneity of the Halbach magnet is high enough to be used in various versions of portable devices such as NMR relaxometer, and MRI. This study discussed effects of the number of magnets used in the Halbach magnet system, and compared their initial simulation outcomes. Two kinds of magnets settlements were modeled and investigated within a multidimensional framework. The simulation outcomes show that the settlements of permanent magnets play important role on the magnetic flux density and homogeneity at the center of the magnet design. The maximum magnetic flux density was obtained at the centre, as expected.

Preparation, structure, and magnetic properties of CuMnFe 2 O 4 nanoparticles for magnetic particle imaging

The crystal structure of the synthesized magnetic nanoparticles was analyzed with XRD and SEM. Effect of doping value on microstructure was analyzed by XRD. Results are shown in Figure 1. The average particles sizes of samples were obtained by nanosize measure of Zeta Sizer Nano-ZS instrument results at room temperature. Particle size determined within 42-57 nm given Table 1.