Magneto-optical properties of BaCryFe12?yO19 (0.0???y???1.0) hexaferrites
[ X ]
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, nanocrystalline BaCryFe12?yO19 (0.0???y???1.0) hexaferrite powders were prepared by sol–gel auto combustion method and the effect of Cr3+ ion substitution on morphology, structure, optic and magnetic properties of Barium hexaferrite were investigated. X-ray powder diffraction (XRD) analyses confirmed the purity of all samples. The XRD data shows that the average crystallite size lies between 60.95?nm and 50.10?nm and same was confirmed by Transmission electron microscopy. Transmission electron and scanning electron microscopy analyses presented the hexagonal morphology of all products. The characteristic hysteresis (?-H) curves proved the ferromagnetic feature of as grown nanoparticle samples. Specific saturation magnetization (?s) drops from 46.59 to 34.89?emu/g with increasing Cr content while the coercive field values lie between 770 and 1652?Oe. The large magnitude of the magnetocrystalline (intrinsic) anisotropy field, (Ha) between 11.0 and 12.6?kOe proves that all products are magnetically hard. The energy band gap values decrease from 2.0?eV to 1.84?eV with increasing Cr content. From 57Fe Mössbauer spectroscopy, the variation in line width, isomer shift, quadrupole splitting and hyperfine magnetic field values were determined and discussed.
Açıklama
Anahtar Kelimeler
Hard Ferrites, Hexaferrite, Hyperfine Interactions, Magnetic Nanomaterials, Magnetic Properties
Kaynak
Journal of Magnetism and Magnetic Materials
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
451
Sayı
Künye
Asiri, S., Güner, S., Korkmaz, A. D., Amir, M., Batoo, K. M., Almessiere, M. A.,Güngüneş, H., Sözeri, H., Baykal, A. (2018). Magneto-optical properties of BaCryFe12? yO19 (0.0? y? 1.0) hexaferrites. Journal of Magnetism and Magnetic Materials, 451, 463-472.
