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Effect of Pr3+ substitution on the microstructure, specific surface area, magnetic properties and specific heating rate of Ni0.5Zn0.5PrxFe2−xO4 nanoparticles synthesized via sol–gel method
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Yan, Bing, Gao, Peng-zhao, Lu, Zhou-li, Ma, Rui-xue, Rebrov, Evgeny V., Zheng, Hang-bo and Gao, Ying-xia (2015) Effect of Pr3+ substitution on the microstructure, specific surface area, magnetic properties and specific heating rate of Ni0.5Zn0.5PrxFe2−xO4 nanoparticles synthesized via sol–gel method. Journal of Alloys and Compounds, 639 . pp. 626-634. doi:10.1016/j.jallcom.2015.03.211 ISSN 0925-8388.
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WRAP- effect-Pr3+substitution-microstructure-specific-surface-area-Rebrov-2016.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1436Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.jallcom.2015.03.211
Abstract
A series of Ni–Zn ferrite nanoparticles with a nominal composition of Ni0.5Zn0.5PrxFe2−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 87.2 Oe, 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.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Ferrites (Magnetic materials), Dielectric heating | ||||||||
| Journal or Publication Title: | Journal of Alloys and Compounds | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 0925-8388 | ||||||||
| Official Date: | 5 August 2015 | ||||||||
| Dates: |
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| Volume: | 639 | ||||||||
| Page Range: | pp. 626-634 | ||||||||
| DOI: | 10.1016/j.jallcom.2015.03.211 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 3 November 2017 | ||||||||
| Date of first compliant Open Access: | 7 November 2017 | ||||||||
| Funder: | Royal Academy of Engineering (Great Britain), Engineering and Physical Sciences Research Council (EPSRC), Hunan, China (Province). Science and Technology Program, European Research Council (ERC) | ||||||||
| Grant number: | 2012WK3023 (Hunan, China (Province). Science and Technology Program), RFMiFiCS (ERC) |
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