Synthesis of fine magnetite powder using reverse coprecipitation method and its heating properties by applying AC magnetic field

Aono, Hiromichi; Hirazawa, Hideyuki; Naohara, Takashi; Maehara, Tsunehiro; Kikkawa, Hiroyuki; Watanabe, Yuji

doi:10.1016/j.materresbull.2005.03.014

Cited by 81 publications

(45 citation statements)

References 10 publications

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“…Maghemite can be synthesized by different methods such as: co-precipitation [12][13][14], hydrothermal [15], microemulsion [16], solution method [17] etc. The co-precipitation method is industrially attractive because of its ability to be scaled up, its reproducibility and its use of eco-friendly reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Abbasi

Mirhabibi

Arabi³

et al. 2016

J Mater Sci: Mater Electron

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Maghemite nanoparticles were successfully synthesized via a co-precipitation method and electrochemical-optical properties of three different sizes were studied. Using this material as a Li-ion battery cathode, the results of charge-discharge tests showed that decreasing the maghemite particle size increased the lithium hosting capacity. First discharge capacities for cathodes made of material of particle size 11 and 19 nm were 206 and 186 mAh g -1 respectively, while for micron-sized cathode material a discharge capacity of 26 mAh g -1 was obtained. Electrochemical impedance spectroscopy (EIS) was used to derive equivalent circuit elements, which confirmed a reduction in lithium insertion resistance for material with a smaller particle size. EIS investigations disclosed that the R ct and Z W reduced with reduction of particle size, which indicates cathode material with lower particle size is more suitable. Band-gaps of the materials were determined using the diffuse reflectance spectroscopy technique on the base of Kubelka-Munk theory. The results showed that the needed energy for electron conduction reduces with reduction of particle size, which results in capacity enhancement.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Abbasi

Mirhabibi

Arabi³

et al. 2016

J Mater Sci: Mater Electron

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“…In the case of the powder type materials, a nano-sized superparamagnetic magnetite (Fe 3 O 4 ) prepared by the chemical synthesis method has been investigated as the candidate material for this type of therapy [11][12][13][14]. We have searched for new magnetic materials having a high heat generation ability in an AC magnetic field and a high stability in the human body, and found that Y 3 Fe 5 O 12 has the best heat ability among the reported materials [15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Heat generation properties in AC magnetic field for composite powder material of the Y3Fe5O12–nSiC system prepared by reverse coprecipitation method

et al. 2016

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Abstract:Composite powder material of the Y 3 Fe 5 O 12 -nSiC system was synthesized by a reverse coprecipitation method to study its heat generation property in an AC magnetic field. For Y 3 Fe 5 O 12 (n = 0), the maximum heat generation ability of 0.45 W·g 1 in an AC magnetic field (370 kHz, 1.77 kA·m 1 ) was obtained for the sample calcined at 1100 .℃ The SiC addition helped to suppress the particle growth for Y 3 Fe 5 O 12 at the calcination temperature. The heat generation ability was improved by the addition of the SiC powder, and the maximum value of 0.93 W·g 1 was obtained for the n = 0.3 sample calcined at 1250 . The ℃ heat generation ability and the hysteresis loss value were proportional to the cube of the magnetic field (H 3 ). The heat generation ability (W·g 1 ) of the Y 3 Fe 5 O 12 -0.3SiC sample calcined at 1250 ℃ could be expressed by the equation 4.5×10 4 · f · H 3 using the frequency f (kHz) and the magnetic field H (kA·m 1 ).

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“…Magnetic nanoparticles with a size less than 100 nm represent an important class of nanostructure materials, which allow investigations of fundamental aspects of magnetic ordering phenomena and could lead to new technological applications. Magnetic iron oxides have been used in biomedicine for magnetic resonance imaging (MRI) and drug delivery and as a heating mediator for cancer thermotherapy [1]. In nonsurgical treatments of cancerous tumors, the heating is mainly achieved via magnetization relaxation in superparamagnetic state [2,3] or hysteresis-loss heating [4].…”

Section: Introductionmentioning

confidence: 99%

Simple Hydrolysis Synthesis of Uniform Rice-Shaped β-FeOOH Nanocrystals and Their Transformation to α-Fe₂O₃ Microspheres

Singh

Sharma

Kumar

et al. 2015

Indian Journal of Materials Science

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In the synthesis of nanostructure materials a specific emphasis has been focused on the control of shape and orientation of nanocrystals to obtain prerequisite properties of the materials. Nanorice is a new hybrid nanoparticle prolate geometry of nanoshells with reduced symmetry having new exciting optical behavior. Rice-shaped -FeOOH nanocrystals have been synthesized by a simple hydrolysis chemical method using ferric aqueous solution and urea as surfactant. The successive calcination of -FeOOH nanocrystals at 650 ∘ C results in the formation of the porous -Fe 2 O 3 (hematite) microspheres. The as-synthesized yield ofFeOOH nanocrystals was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), and optical spectroscopy. The successive transformation of rice-shaped -FeOOH nanostructures into porous -Fe 2 O 3 (hematite) microspheres through calcination process was confirmed by XRD, SEM, and EDAX studies. The water contact angle of as-prepared -Fe 2 O 3 microspheres shows hydrophobic behavior of the material.

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Synthesis of fine magnetite powder using reverse coprecipitation method and its heating properties by applying AC magnetic field

Cited by 81 publications

References 10 publications

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Heat generation properties in AC magnetic field for composite powder material of the Y3Fe5O12–nSiC system prepared by reverse coprecipitation method

Simple Hydrolysis Synthesis of Uniform Rice-Shaped β-FeOOH Nanocrystals and Their Transformation to α-Fe₂O₃ Microspheres

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Synthesis of fine magnetite powder using reverse coprecipitation method and its heating properties by applying AC magnetic field

Cited by 81 publications

References 10 publications

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Heat generation properties in AC magnetic field for composite powder material of the Y3Fe5O12–nSiC system prepared by reverse coprecipitation method

Simple Hydrolysis Synthesis of Uniform Rice-Shaped β-FeOOH Nanocrystals and Their Transformation to α-Fe2O3 Microspheres

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Simple Hydrolysis Synthesis of Uniform Rice-Shaped β-FeOOH Nanocrystals and Their Transformation to α-Fe₂O₃ Microspheres