Structural and Optical Properties of Pure Iron and Iron Oxide Nanoparticles Prepared via Pulsed Nd:YAG Laser Ablation in Liquid

This study is an attempt to produce gadolinium-doped iron oxide nanoparticles for the purpose of utilization in magnetic fluid hyperthermia (MFH). Six gadolinium-doped iron oxide samples with varying gadolinium contents ( were prepared using the hydrothermal method and high vapor pressure to incorporate gadolinium ions in the iron oxide structure. The samples were indexed as , with varying from 0.0 to 0.1. The results reveal that gadolinium ions have a low solubility limit in the iron oxide lattice (x = 0.04). The addition of gadolinium caused distortion in the produced maghemite phase and formation of other phases. Based on X-ray diffraction (XRD) analysis and photoelectron spectroscopy (XPS), it was observed that gadolinium mostly crystalized as gadolinium hydroxide, for gadolinium concentrations above the solubility limit. The measured magnetization values are consistent with the formed phases. The saturation magnetization values for all gadolinium-doped samples are lower than the undoped sample. The specific absorption rate (SAR) for the pure iron oxide samples was measured. Sample GdIO/0.04, pure iron oxide doped with gadolinium, showed the highest potential to produce heat at a frequency of 198 kHz. Therefore, the sample is considered to hold great promise as an MFH agent.

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Synergistic photo optical and magnetic properties of a hybrid nanocomposite consisting of a zinc oxide nanorod array decorated with iron oxide nanoparticles

Journal of Materials Chemistry C ◽

10.1039/c8tc02680g ◽

2018 ◽

Vol 6 (39) ◽

pp. 10502-10512 ◽

Cited By ~ 5

Author(s):

Brandon Azeredo ◽

Anne Carton ◽

Cédric Leuvrey ◽

Céline Kiefer ◽

Dris Ihawakrim ◽

...

Keyword(s):

Zinc Oxide ◽

Magnetic Properties ◽

Optical Properties ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Nanorod Array ◽

Oxide Nanoparticles ◽

Hybrid Nanocomposite ◽

Optical And Magnetic Properties

A ZnO/PBA/Fe3−δO4 nanocomposite displays enhanced magnetic and optical properties as a result of dual synergy.

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Microwave-assisted one-step hydrothermal synthesis of pure iron oxide nanoparticles: magnetite, maghemite and hematite

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-011-2579-4 ◽

2011 ◽

Vol 60 (2) ◽

pp. 198-205 ◽

Cited By ~ 62

Author(s):

Ling Hu ◽

Aurelien Percheron ◽

Denis Chaumont ◽

Claire-Helene Brachais

Keyword(s):

Iron Oxide ◽

Hydrothermal Synthesis ◽

Iron Oxide Nanoparticles ◽

Pure Iron ◽

Oxide Nanoparticles ◽

Microwave Assisted ◽

One Step ◽

Pure Iron Oxide

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Synthesis of Oxide Iron Nanoparticles Using Laser Ablation for Possible Hyperthermia Applications

Nanomaterials ◽

10.3390/nano10112099 ◽

2020 ◽

Vol 10 (11) ◽

pp. 2099

Author(s):

María J. Rivera-Chaverra ◽

Elisabeth Restrepo-Parra ◽

Carlos D. Acosta-Medina ◽

Alexandre. Mello ◽

Rogelio. Ospina

Keyword(s):

Iron Oxide ◽

Laser Ablation ◽

Iron Oxide Nanoparticles ◽

Laser Energy ◽

Great Influence ◽

Oxide Nanoparticles ◽

X Ray Diffraction ◽

Transmission Electron ◽

Heating Capacity ◽

Nanoparticles Concentration

In this work, iron oxide nanoparticles produced using the laser ablation technique were studied in order to determine the characteristics of these nanoparticles as a function of the laser energy for the possible application in magnetic hyperthermia. Nanoparticles were obtained by varying the power of the laser considering values of 90, 173, 279 and 370 mJ. The morphology of these nanoparticles was determined using the dynamic light scattering (DLS) and scattering transmission electron microscopy (STEM) techniques, confirming that the size of the particles was in the order of nanometers. A great influence of the laser power on the particle size was also observed, caused by the competition between the energy and the temperature. The composition was determined by X-ray diffraction and Raman spectroscopy, showing the presence of magnetite, maghemite and hematite. The hyperthermia measurements showed that the temperature rise of the iron oxide nanoparticles was not greatly influenced by the energy change, the heating capacity of magnetic NPs is quantified by the specific absorption rate (SAR), that tends to decrease with increasing energy, which indicates a dependence of these values on the nanoparticles concentration.

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