期刊
CERAMICS INTERNATIONAL
卷 44, 期 17, 页码 21866-21873出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.08.295
关键词
Nano-ferrites; Crystallite; Optical properties; Electrical properties; Impedance; Microwave
资金
- Science and Engineering Research Board, New Delhi [SR/FTP/PS-068/2014]
Polyvinyl alcohol (PVA)-blended NiLaxFe2-xO4 (x = 0.01, 0.03, 0.05, 0.07 and 0.09) nano-ferrites were investigated through characterization studies such as powder X-ray diffraction (XRD) pattern, vibrating sample magnetometer graph, field emission scanning electron microscope (FESEM) images, and electrochemical impedance spectra. XRD pattern showed the presence of spinel cubic structure. A spherical-like morphology of PVA-blended nano-ferrites was identified from FESEM images and it was confirmed that the particle size of PVA-blended NiLaxFe2-xO4 nano-ferrites was approximately 35 nm. An increase in dielectric constant and a decrease in loss tangent as a function of La3+ ions were noted in prepared nano-ferrites. Impedance analysis of PVA-blended NiLaxFe2-xO4 nano-ferrites indicated resistive behavior. PVA-blended NiLaxFe2-xO4 nano-ferrites showed a soft ferromagnetic nature. Further, saturation magnetization of PVA-blended NiLaxFe2-xO4 nano-ferrites decreased while increases the content of La3+ ions.
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