پديدآورندگان :
Sarikhani Fateme sarikhani_fateme@yahoo.com Department of Chemistry,Faculty of Science , Lorestan University , lorestan; , Zebardasti Abedin Department of Chemistry,Faculty of Science , Lorestan University , lorestan , Naseri Mahmod Department of Chemistry,Faculty of Science , Lorestan University , lorestan , Soleymani Alireza Department of Chemistry,Faculty of Science , Lorestan University , lorestan , Ehsan Naderi Department of Chemistry,Faculty of Science , Lorestan University , lorestan , Rezaei Vahidian Hadi Department of Chemistry,Faculty of Science , Lorestan University , lorestan
چكيده فارسي :
Fig.1. shows the magnetic hysteresis loops of SrFe12O19 nanoparticles and SrFe12O19@SiO2 and SrFe12O19 @TiO2 nanotubes in the range of (-15 to kOe +15). The hysteresis loop of SrFe12O19@ SiO2 nanotubes is a wasp-waist showing that indicates the presence of two magnetic phases (soft and hard ferromagnetic) in the structure of the SrFe12O19 @SiO2 nanotubes, which predominates in the lower magnetic fields of the soft ferromagnetic phase [1], and it is dominated by the increase of the ferromagnetic field. Hemophagus waste loop due to the effect of impurity phase on magnetic fields, particle size, size distribution, and field strength [2]. The field of formation of SrFe12O19 nanoparticles decreases in the presence of TiO2 nanoparticles, which can be due to the presence of non-magnetic ion Ti + 4 substituted with Fe + 3 in octagonal locations in SrFe12O19 nanoparticles, which reduces the particle size [3].
