magnetic-materials-2018-posters-abstracts

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S e p t e m b e r 2 4 - 2 6 , 2 0 1 8 | B u d a p e s t , H u n g a r y

OF EXCELLENCE

IN INTERNATIONAL

MEETINGS

YEARS

Magnetic Materials 2018

Materials Science and Nanotechnology

Volume 2

MAGNETISM AND

MAGNETIC MATERIALS

International Conference on

Mater Sci Nanotechnol 2018, Volume 2

STRUCTURAL, MAGNETIC AND DIELECTRIC PROPERTIES OF SOL-

GEL AUTO-COMBUSTION SYNTHESIZED MAGNESIUM FERRITE

NANOPARTICLES

Gigel Gicu Nedelcu, Alin Druc, Adriana Popa, Maria Cazacu, Mihai Iacob, Marius Dobromir, Petronel

Postolache, Liviu Leontie

and

Felicia Iacomi

Grigore Ghica Voda Sanitary School Iasi, Romania

n the present work, MgFe

nanoparticles were prepared by sol-gel auto-combustion method, using glycine as fuel agent.

Transmission electron microscopy and scanning electron microscopy (SEM) provided the data on morphological analysis

and particle sizes. Structural characterization was performed with x-ray diffraction which has given data about the spinel

single-phase formation. Chemical structure has been characterized by Fourier-transform infrared spectroscopy and by x-ray

photoelectron spectroscopy which proved the absence of organic phases. The magnetic properties investigated by vibrating

sample magnetometry and electron paramagnetic spectroscopy show that the ferrite particles are superparamagnetic

behaviour, depending on the chemical composition, shape and size of the particles, the synthesis method, crystallinity,

direction of magnetization and cation distribution. Dielectric properties were evaluated by dielectric permittivity and dielectric

losses measurements, using an Agilent 4294A Precision Impedance Analyzer, in the range of 40 Hz - 110 MHz.