Magneto-optical properties of Mn3+ substituted Fe3O4 nanoparticles

Güner, S.; Amir, Muhammad; Geleri, M.; Sertkol, M.; Baykal, A.

doi:10.1016/j.ceramint.2015.05.034

Cited by 74 publications

(9 citation statements)

References 53 publications

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“…As can be seen from the XRD pattern, the solubility limit for Eu 3+ ions in the lattice of Na 3 FeF 6 is lower than 15%, at which considerable amount secondary phase appears due to the collapse of the lattice. 6 From the thermal analysis, the uoride host Na 3 FeF 6 is stable at temperatures up to around 255 C. At higher temperatures, a strong endothermic peak appears accompanied with high weight loss in multiple stages, indicating the decomposition of the material (Fig. 3a).…”

Section: Characterization Of the Na 3 Fefmentioning

confidence: 97%

“…For example, the magneto-optical hybrid nanoparticles formed by the combination of upconversion nanoparticles and magnetic Fe 3 O 4 nanoparticles can be used both as drug carriers and as nanoscale magneto-optical nanoprobes. [4][5][6][7][8][9][10] In recent years, the research of magneto-optical bi-functional nanomaterials mostly focuses on the combination of magnetic and optical properties in a single particle, such as rare-earth (RE) doped materials. [11][12][13][14][15] The matrix of these magneto-optical materials is mostly not magnetic or only paramagnetic.…”

Section: Introductionmentioning

confidence: 99%

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Luminescent properties of Eu-doped magnetic Na₃FeF₆

et al. 2018

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Section: Characterization Of the Na 3 Fefmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Luminescent properties of Eu-doped magnetic Na₃FeF₆

et al. 2018

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“…Measurement of magnetization at room temperature for Li1.1Co0.3Fe2.1O4 nanocrystalline spinel powder is carried out using the VSM technique. 1/H 2 to approach zero [28][29][30]. This theory is applied for non-interacting particles as confirm from squareness values in the Tables.…”

Section: Resultsmentioning

confidence: 59%

Assessing of channel structure and magnetic properties on heavy metal ions removal from water

Ateia

Arman

2021

J Mater Sci: Mater Electron

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The synthesis of Li1.1Co0.3Fe2.1O4 ferrite nanoparticles has been synthesized by the citrate auto combustion method. The distribution of cations on A-site and B-site was studied by X-ray Diffraction (XRD), High-Resolution Transmission Electron Microscopy (HRTEM). The crystallite size and strain were calculated by using the W-H (Williamson-Hall) plot. The crystallite of Li1.1Co0.3Fe2.1O4 ferrite nanoparticle is ∼30 nm. HRTEM confirmed the homogeneous formation of the cubic phase. The calculated height and spacing parameters related to roughness are essential to achieve the efficiency of Li1.1Co0.3Fe2.1O4 to be used in microbatteries, smart windows, smart mirrors, displays, gas sensors, and other applications. According to the obtained data, the Li1.1Co0.3Fe2.1O4 has a spiky surface with Rku = 5.50. Additionally, the magnetic hysteresis loop has been clarified using the Vibrating Sample Magnetometer (VSM). The double peak characteristic in the Switching field distribution (SFD) reveals the competition between exchange coupling and strong dipolar interactions. Li1.1Co0.3Fe2.1O4 has employed as a sorbent material for the removal of lead (II) ions from wastewater. The main advantages of the synthesized sample are ease of separation, high adsorption, low cost as well as recycled with notable efficiency. Two models of adsorption isotherms (Freundlich and Langmuir) are utilized to recognize the adsorption mechanism.

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“…VSM technique for measuring a magnetization characters (expressed by the measured magnetization curve) of spinel magnetic iron oxide coated with citric acid and TiO2 nano-composite sample was recorded and the results of hysteresis (the M-H loops of the sample) are shown in Fig.8. The hysteresis loop of the nano-composite, which was measured in the powder state ( Fig.8) indicating that there was no hysteresis in the magnetization of a sample, provided evidence that the synthesized magnetic iron oxide nano-composite was super-paramagnetic at room temperature, this can be attributed to the small size of the synthesized nano-composite (Pradhan et al, 2006, Güner et al, 2015and Stoia et al, 2017. In other words, when the magnetic nano-composite size is smaller than a certain size, the particles will exhibit super-paramagnetism (Guo et al, 2010).…”

Section: Vibrating Sample Magnetometer (Vsm) and Magnetic Propertiesmentioning

confidence: 89%

Synthesis of Iron Oxide/TiO2 with Citric Acid Nano-Composite to Remove Some Inorganic Pollutants from Kema Drain -Aswan-Egypt

2018

Aust. J. Basic & Appl. Sci.

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Kema drain was constructed in the past at Aswan Governorate 60 years ago in south east-north direction of Aswan city as a reservoir for the floods in order so as a protect for Aswan city from the dangers of floods, where the flood water flows into Kema drain and from it to the Nile River directly. But it was exploited by the Kema Fertilizer Factory in Aswan, which it is the largest chemical fertilizer plant in the Middle East, by dumping its industrial wastes in the drain, which is discharged in turn directly in the Nile River (Fig.1). Also, the Sewage Authority in Aswan city participates in this problem by throwing sewage of Aswan city in the Nile water, which is about 12,0000m 3 of wastewater. As well as, the Kema drain was used by some offenders as a drain to get rid of sewage, where some people connect the drainage pipes to pour into the drain. This causes a foul smell hurt everyone who passes through this area. It is an environmental and health tragedy for the people of Aswan. Thus, over 60 years, there is still a source of disturbance and pollution of one of the most important tourist governorates (Aswan Governorate). By analyzing the Kema drain wastewater and some Nile River water samples that were taken after the outlet of Kema drain, it is advised that they contaminated by some inorganic pollutants (Table 1). Where, toxic heavy metals of water sources have become one of the main problems worldwide (Madaln and Suzuki, 2002). So, it must find a solution to this problem by treating the wastewater of the Kema drain before throwing it in the Nile River in a number of ways, including those used in this paper. The removal of heavy metals, such as copper and iron has a great attention because of their harmful effects on the ecosystem and human health. Removal of heavy metals can be eliminated by different treatment methods. (Pokhrel and Viraraghavan, 2008 & Vaclavikova et al., 2008). Adsorption processes are commonly applied and show a good efficiency to cost ratio for removing toxic metals. Sorption methods are the best method with less technical cost and removal efficiency percent. (Vaclavikova et al., 2008). Recently, magnetic materials have a high interest for removal of heavy metals. Generally, MINPs particle size has a main effect on removal toxic metals. (Yavuz et al., 2006 and Deliyanni et al., 2010). Improve performance of nanoparticles to sorbent materials depends on nanoporous structures. (Fryxell et al., 2004). Large surface area of nanomaterials has very advantageous for removal of toxic metals from polluted water (O'Handley, 2000). The morphological character of MINPs is crystalline and can be synthesized by chemical methods; a challenging task is nano range of particle size and morphology. Chemical precipitation, sol-gel, hydrothermal, emulsion-precipitation, electro-deposition, and microwave assisted hydrothermal technique. The solgel method is considered as a best method for preparing nanosized materials. (Mary Jacintha et al., 2017). A numerous phases of iron oxides, i.e., oxides, hydroxides or...

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Magneto-optical properties of Mn3+ substituted Fe3O4 nanoparticles

Cited by 74 publications

References 53 publications

Luminescent properties of Eu-doped magnetic Na₃FeF₆

Luminescent properties of Eu-doped magnetic Na₃FeF₆

Assessing of channel structure and magnetic properties on heavy metal ions removal from water

Synthesis of Iron Oxide/TiO2 with Citric Acid Nano-Composite to Remove Some Inorganic Pollutants from Kema Drain -Aswan-Egypt

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Magneto-optical properties of Mn3+ substituted Fe3O4 nanoparticles

Cited by 74 publications

References 53 publications

Luminescent properties of Eu-doped magnetic Na3FeF6

Luminescent properties of Eu-doped magnetic Na3FeF6

Assessing of channel structure and magnetic properties on heavy metal ions removal from water

Synthesis of Iron Oxide/TiO2 with Citric Acid Nano-Composite to Remove Some Inorganic Pollutants from Kema Drain -Aswan-Egypt

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Luminescent properties of Eu-doped magnetic Na₃FeF₆

Luminescent properties of Eu-doped magnetic Na₃FeF₆