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In the present study, A series of polycrystalline chromium-substituted cobalt ferrite samples with compositions of CoCrxFe2-xO4 were prepared by standard powder ceramic techniques. The microstructure and final composition of the samples were characterized using a scanning electron microscope with energy-dispersive X-ray spectroscopy (EDX). The crystal structure of the samples was determined by X-ray...
In this work, the effects of post-annealing of CoCrPt-SiO2/Ru perpendicular magnetic recording media on magnetic properties and microstructure have been studied. CoCrPt-SiO2/Ru/Ta thin films were deposited on Si substrate by a dc magnetron sputtering method at room temperature and followed by post-annealing for 30 minutes in the range of 100 ~ 240degC. Magnetic properties such as magnetization, coercivity...
In this study, TbFeCo with the composition satisfying high saturation magnetization and low coercivity has been selected then the coercivity and magnetization reversal mechanism has been manipulated by using patterned underlayer. At first 50 nm Al films have been deposited on glass substrate then anodization has been carried out at different voltage to have different surface morphology. Tb18Fe70Co...
In this paper, the effect of Co substitution for Fe on the magnetic properties of (Sm0.4Pr0.6)3 (Fe1-xCox)27.5 Ti1.5 [x = 0.1, 0.2, 0.3, 0.4] is reported. All the compounds were prepared by arc melting the constituent elements under Ar atmosphere, then heat treated in an evacuated (10-6 torr) and sealed quartz tube at 1050degC for five days and subsequently quenched in ice-water mixture. Crystal...
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