Ni 0 . 5 Zn 0 . 5 Pr x Fe 2x O 4 nanoparticles synthesized via sol-gel method

Content Provider	Semantic Scholar
Author	Yan, Bing Jun Gao, Peng-Zhao Lu, Zhou-Li Ma, Rui-Xue Rebrov, Evgeny V. Zheng, Hang-Bo Gao, Ying-Xia
Copyright Year	2017
Abstract	A series of Ni-Zn ferrite nanoparticles with a nominal composition of Ni0.5Zn0.5Prx Fe2-xO4 (x=0.000 0.100 with steps of 0.025) has been synthesized by a sol-gel method. The effect of composition and calcination temperature on the morphology, specific surface area, magnetic properties and specific heating rate has been studied. The Ni-Zn-Pr ferrites have a single spinel (NZF) phase at Pr loadings below 5 at%. A minor amount of an orthorhombic PrFeO3 phase is present in the Ni-Zn-Pr ferrites at Pr loadings above 5 at%. At a Pr loading of 10 at%, the specific surface area increases six-fold as compared to that of the non-doped Ni0.5Zn0.5Fe2O4 sample. As the Pr loading increases, the saturation magnetization, remnant magnetization and coercivity increase and reach the maximum at x = 0.05 and then decrease. The maximum values of these parameters are 67.0 emu/g, 9.7 emu/g and 87.2Oe, respectively. Under radiofrequency field (frequency: 295 kHz, intensity: 500 Oe), the highest heating rate of 1.65 K/s was observed over the sample with x = 0.025 which is 2.5 times higher than that of Ni0.5Zn0.5Fe2O4.
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Alternate Webpage(s)	http://wrap.warwick.ac.uk/94091/1/WRAP-%20effect-Pr3+substitution-microstructure-specific-surface-area-Rebrov-2016.pdf
Language	English
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Content Type	Text
Resource Type	Article