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magnetic nanoparticles produced by surfactant

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Surfactant Effects on the Structural and Magnetic ...

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The magnetic properties were investigated by measuring the hysteresis loops where the surfactant influence on their collective magnetic behavior and subsequent AC magnetic hyperthermia response is apparent. The results indicate that the produced iron oxide nanoparticles may be considered as good candidates for biomedical applications in ...

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Sm--Co hard magnetic nanoparticles prepared by surfactant ...

Hard magnetic nanoparticles based on the Sm2Co17 and SmCo5 systems have been successfully produced using a surfactant-assisted ball milling technique. A size-selection process has been developed to obtain nanoparticles of different sizes with narrow size distribution. Significant room-temperature coercivity up to 3.1 kOe has been achieved with the

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Anisotropic PrCo _5 Nanoparticles by Surfactant .

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Magnetically hard PrCo5 nanoparticles have been produced by using surfactant-assisted high-energy ball milling techniques. The use of surfactant leads to the dispersion of the crashed particles and prevents them from rewelding during the milling process. Heptane was used as the milling medium, and oleic acid as the surfactant.

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Sm Co hard magnetic nanoparticles prepared by .

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Hard magnetic nanoparticles based on the Sm 2 Co 17 and SmCo 5 systems have been successfully produced using a surfactant-assisted ball milling technique. A size-selection process has been developed to obtain nanoparticles of different sizes with narrow size distribution. Significant room-temperature coercivity up to 3.1 kOe has been achieved with the .

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Magnetic nanoparticles produced by surfactant .

Nanoparticles of Fe, Co, FeCo, SmCo, and NdFeB systems with sizes smaller than 30 nm and narrow size distribution have been successfully prepared by ball milling in the presence of surfactants and organic carrier liquid. It has been observed that the nanoparticles prepared by milling Fe and FeCo powders were close to spherical in their shapes, whereas those of Co, SmCo, and Nd-Fe-B showed ...

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Novel NdCo 5 nanoflakes and nanoparticles .

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In this work, NdCo5 nanoflakes and nanoparticles have been produced by a two-stage high-energy ball milling (HEBM), by first using wet HEBM to prepare precursor nanocrystalline powders followed by surfactant-assisted HEBM. NdCo5 flakes have a thickness below 150 nm and an aspect ratio as high as 102–103; the nanoparticles have an average size of 7 nm. Both the nanoparticles and nano-flakes ...

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Surfactant Effects on the Structural and Magnetic ...

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Iron oxide nanoparticles were prepared using the simplest and most efficient chemical route, the coprecipitation, in the absence and the presence of three different and widely used surfactants. The purpose of this study is to investigate the possible influence of the different surfactants on the structure and therefore on the magnetic properties of the iron oxide nanoparticles.

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Characterization and Magnetic Behavior of Fe and .

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Surfactant-assisted high energy ball milling technique is a new method of producing magnetic nanoparticles. In this study, permanent magnetic SmCo 5 nanoparticles .

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Magnetic nanoparticles: synthesis, .

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This tutorial review summarizes the recent advances in the chemical synthesis and potential applications of monodisperse magnetic nanoparticles. After a brief introduction to nanomagnetism, the review focuses on recent developments in solution phase syntheses of monodisperse MFe 2 O 4, Co, Fe, CoFe, FePt and SmCo 5 nanoparticles. The review further outlines the surface, structural, and ...

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Recent progress of magnetic surfactants: Self .

01.05.2018 · MagSurfs include magnetic cationic surfactants with metal complex anions [2 ••,8] and magnetic anionic surfactants which were produced from AOT with transition d- or f-block metals [5,14]. The highly effective concentrations of metal centers makes MagSurfs exhibit paramagnetic behavior with no saturation magnetization [2 ••].

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Surfactant Effects on the Structural and Magnetic ...

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The magnetic properties were investigated by measuring the hysteresis loops where the surfactant influence on their collective magnetic behavior and subsequent AC magnetic hyperthermia response is apparent. The results indicate that the produced iron oxide nanoparticles may be considered as good candidates for biomedical applications in hyperthermia treatments because of their high heating ...

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Effects of surfactant and polymerization method on .

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Chakka VM, Altuncevahir B, Jin ZQ, Li Y, Liu JP (2006) Magnetic nanoparticles produced by surfactant-assisted ball milling. J Appl Phys 99(08E912):1–3. Google Scholar; Chauvierre C, Labarre D, Couvreur P, Vauthier C (2003) Plug-in spectrometry with optical fibers as a novel analytical tool for nanoparticles technology: application to the investigation of the emulsion polymerization of the ...

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Anisotropic Sm-(Co,Fe) nanoparticles by surfactant ...

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AB - Magnetically hard Sm2 (Co0.8 Fe0.2) 17 and SmCo5 nanoparticles have been produced by using surfactant-assisted low- and high-energy ball milling techniques. Surfactants prevent the rewelding of the crashed particles during the milling process. Heptane was used as the milling medium and oleic acid as the surfactant. High-energy ball milling experiments took place in a milling vial with ...

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Synthesis and Biochemical effects of magnetite ...

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oxide nanoparticles in the presence of surfactants in biomedical applications, several studies have been reported the surfactant-free electrochemical method for the magnetit nanoparticles synthesis using liquid phase reactions [20-22]. Nishio et al. prepared magnetite nanoparticles in the size range of 30-100 nm by oxidizing ferrous hydroxide in

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Sm Co hard magnetic nanoparticles prepared by .

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Hard magnetic nanoparticles based on the Sm 2 Co 17 and SmCo 5 systems have been successfully produced using a surfactant-assisted ball milling technique. A size-selection process has been developed to obtain nanoparticles of different sizes with narrow size distribution. Significant room-temperature coercivity up to 3.1 kOe has been achieved with the .

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(PDF) Anisotropic Sm-(Co,Fe) Nanoparticles by .

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Hard magnetic nanoparticles based on the Sm(2)Co(17) and SmCo(5) systems have been successfully produced using a surfactant-assisted ball milling technique. A size-selection process has been ...

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Effects of surfactant on the structural and magnetic ...

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01/10/2018 · Varied concentration of surfactant produced spherical and octahedral morphologies. Abstract . A simple and effective hydrothermal route is adopted where glycerol and NaOH are used as surfactant and precipitating agents respectively, for the synthesis of NiFe 2 O 4 (NFO) magnetic nanoparticles. The structure and morphology of the as prepared NFO are characterized by X-ray .

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Surfactant Effects on the Structural and Magnetic ...

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Surfactant Effects on the Structural and Magnetic Properties of Iron Oxide Nanoparticles Maria Filippousi,*,† Mavroeidis Angelakeris,‡ Maria Katsikini,‡ Eleni Paloura,‡ Ilias Efthimiopoulos,§ Yuejian Wang,§ Demetris Zamboulis,∥ and Gustaaf Van Tendeloo† †EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium ‡Department of Solid State Physics, School of ...

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Gold coated magnetic nanoparticles: from .

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Gold coated magnetic nanoparticles ([email protected]) have been recognized and applied in analytical chemistry mostly for bio-separation and the development of electrochemical and optical sensors. 23–26 Applications of [email protected] in biomedicine, including magnetic resonance imaging contrast agents, 27,28 targeted drug delivery, 29 as well as downstream ...

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Surfactant organic molecules restore magnetism in .

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09/05/2012 · Surfactant organic molecules restore magnetism in metal-oxide nanoparticle surfaces. Salafranca J(1), Gazquez J, Pérez N, Labarta A, Pantelides ST, Pennycook SJ, Batlle X, Varela M. Author information: (1)Dpt. Física Aplicada III, Universidad Complutense de Madrid, Madrid, 28040 Spain. [email protected] The properties of magnetic nanoparticles tend to be depressed by the .

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Surfactant Effects on the Structural and Magnetic ...

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Iron oxide nanoparticles were prepared using the simplest and most efficient chemical route, the coprecipitation, in the absence and the presence of three different and widely used surfactants. The purpose of this study is to investigate the possible influence of the different surfactants on the structure and therefore on the magnetic properties of the iron oxide nanoparticles.

Get Price