Journal ArticleDOI
Effect of zinc substitution on Co-Ga and Co-Tl ferrite nanoparticles prepared by hydrothermal route
S. Gayathri,S. Kalainathan +1 more
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In this paper, the properties of CoFe2O4, Co0.5Zn 0.5O4 and CoFe1.5XMxO4 were investigated using field emission scanning and tunnelling electron microscopy.Abstract:
Nanoparticles of CoFe2O4, Co0.5Zn0.5Fe1.5Tl0.5O4, Co0.5 Zn0.5Fe1.5Ga0.5O4 ferrites were synthesised by hydrothermal method, and the influence of Tl3+ and Ga3+ doping on the properties of Co0.5Zn0.5Fe2-xMxO4 (M = Tl and Ga) was studied. X-ray diffraction studies revealed the formation of single-phase spinel-type cubical structure and the particle sizes of the as-obtained samples were found to be ~42–56 nm. Field Emission Scanning Electron Microscope (FE-SEM) and Tunnelling Electron Microscope (TEM) were used to characterise the microstructure of the samples and particle size determination, which exhibited the formation of spherical nanoparticles. The saturation magnetisation (Ms) and coercivity (Hc) value change due to the addition of nonmagnetic zinc to the CoFe1.5Tl0.5O4 and CoFe1.5Ga0.5O4. The magnetic studies demonstrated that zinc nanoparticles displayed paramagnetic behaviours with thallium cobalt ferrite and gallium cobalt ferrite, while cobalt ferrite with Tl3+ and Ga3+ ions nanoparticles exhibited...read more
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Synthesis of TEG-coated cobalt-gallium ferrites: Characterization and evaluation of their magnetic properties for biomedical devices
TL;DR: In this paper, the synthesis and characterization of gallium-cobalt ferrites (CoxGa1-xFe2O4, x = 0.1) by thermal decomposition method with the end to evaluate their potential use in biomedicas areas as a result of the developed magnetic properties, size and crystalline structure of the samples.
References
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Journal ArticleDOI
One‐Dimensional Nanostructures: Synthesis, Characterization, and Applications
Younan Xia,Peidong Yang,Yugang Sun,Yiying Wu,Brian Mayers,Byron D. Gates,Yadong Yin,Franklin Kim,Haoquan Yan +8 more
TL;DR: A comprehensive review of 1D nanostructures can be found in this article, where the authors provide a comprehensive overview of current research activities that concentrate on one-dimensional (1D) nanostructure (wires, rods, belts and tubes).
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Progress in applications of magnetic nanoparticles in biomedicine
Quentin A. Pankhurst,Quentin A. Pankhurst,Nguyen T. K. Thanh,Nguyen T. K. Thanh,S. K. Jones,Jon Dobson +5 more
TL;DR: A progress report on the biomedical applications of magnetic nanoparticles since 2003 is presented in this paper, with a focus on magnetic actuation for in vitro non-viral transfection and tissue engineering.
Journal ArticleDOI
Progress in functionalization of magnetic nanoparticles for applications in biomedicine
TL;DR: This review aims to supplement a previously published review in 2003 and address more recent advances in the uses and bioapplications of mNPs and future interesting perspectives.
Journal ArticleDOI
Cation distribution and magnetic properties of nanocrystalline gallium substituted cobalt ferrite
Mohamed Bakr Mohamed,M. Yehia +1 more
TL;DR: In this paper, the doping effect of Ga ions on crystalline phase, microstructure and magnetic properties were investigated, showing that the saturation magnetization increases for the Ga doped CoFe 2 O 4, while the coercivity field decreases with increasing the Ga content.
Journal ArticleDOI
Structural, electrical, optical and magnetic properties of chromium substituted Co–Zn nanoferrites Co0.6Zn0.4CrxFe2−xO4 (0 ⩽ x ⩽ 1.0) prepared via sol–gel auto-combustion method
TL;DR: In this paper, a single-phased cubic spinel structure with space group Fd-3m for all the annealed samples has been synthesized using the sol-gel auto-combustion method.