Characterization of nanocrystalline Mg0.6Zn0.4Fe2O4 soft ferrites synthesized by glycine-nitrate combustion process

Hajarpour, S.; Gheisari, Kh.; Honarbakhsh-Raouf, A.

doi:10.1016/j.jmmm.2012.10.023

Cited by 70 publications

(16 citation statements)

References 18 publications

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“…It shows that the ferrite powers are nanoparticles, and the average grain size decreases with Zn content increasing. This shows that every particle is formed by a number of crystallites [15,16]. is larger for B site Fe 3+ ions.…”

Section: Xrd Patterns Analysismentioning

confidence: 84%

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Yang

Lin

et al. 2015

Journal of Nanomaterials

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Zinc substituted magnesium ferrite nanomaterials Mg 1− Zn Fe 2 O 4 ( = 0, 0.1, 0.3, 0.5, 0.7) powders have been prepared by a solgel autocombustion method. The lattice parameter increases with increase in Zn concentration, but average crystallite size tends to decrease by increasing the zinc content. SEM results indicate the distribution of grains and morphology of the samples. Some particles are agglomerated due to the presence of magnetic interactions among particles. Room temperature Mössbauer spectra of Mg 1− Zn Fe 2 O 4 shows that the A Mössbauer absorption area decreases and the B Mössbauer absorption area increases with zinc concentration increasing. The change of the saturation magnetization can be explained with Néel's theory. It was confirmed that the transition from ferrimagnetic to superparamagnetic behaviour depends on increase in zinc concentration by Mössbauer spectra at room temperature. Saturation magnetization increases and coercivity decreases with Zn content increasing.

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Section: Xrd Patterns Analysismentioning

confidence: 84%

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Yang

Lin

et al. 2015

Journal of Nanomaterials

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“…where m is the content of the sample powder in the fluid (i.e., m = 0.05), C pf (¼0.61-0.75 J/(g K) (Hajarpour et al 2013;Klemme and Ahrens 2005)) and C pg (¼2.43 J/(g K) (Smolkova et al 2015)) are the specific heat capacities of ferrite and glycerol, respectively, T is the temperature, t is the time, and DT/Dt is the initial heating rate.…”

Section: Characterizationmentioning

confidence: 99%

Synthesis and magnetic induction heating properties of Gd-substituted Mg–Zn ferrite nanoparticles

2017

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Gadolinium-substituted magnesium-zinc ferrite (Mg x Zn 1-x Gd y Fe 2-y O 4 ) nanoparticles with different metal compositions for x between 0 and 1 and y between 0 and 0.06 were synthesized via coprecipitation of metal hydroxides, followed by calcination. Their crystal structure was characterized via X-ray diffraction analysis, confirming that the Gd-substituted Mg-Zn ferrite samples had a single-phase spinel structure. The metal composition significantly affected the crystal structure, including the lattice parameters and crystallite size. Scanning electron microscopy (SEM) showed that the ferrite samples had a diameter of approximately 50-200 nm. Furthermore, the temperature rise in an alternating magnetic field was measured, and the magnetic induction heating properties were evaluated using the specific absorption rate (SAR) determined from the temperature profile. The SAR significantly varied depending on the compositions of x and y. When x = 0.5 and y = 0.02, the SAR was found to be at maximum. This reveals that the compositions can control the magnetic induction heating properties. The results suggest that Gd-substituted Mg-Zn ferrite nanoparticles are promising candidates for magnetic hyperthermia applications.

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“…The choice of organic fuel (usually glycine, urea, sucrose, citric acid or alanine) is important because different fuels have different properties such as decomposition temperature, heat of combustion and reducing valency [8]. In general, a good fuel should react non violently, producing non toxic gases, an reacting as a complexant for metal cations [9]. As consequence, glycine was selected as the fuel since it is more cost-effective, has demonstrate that can be conveniently employed to prepare ceramic powders and its combustion heat (− 3.24 kcal g…”

Section: Introductionmentioning

confidence: 99%

“…is greater than that of urea (−2.98 kcal g − 1 ) or citric acid (−2.76 kcal g − 1 ), being more stronger complexing agent and forming stable gels in nitrate solution [9][10][11][12]. The advantages of the glycine nitrate combustion process are relatively low cost, fast heating rates, short reaction times, high composition homogeneity and high energy efficiency [13].…”

Section: Introductionmentioning

confidence: 99%

Scalable synthetic method for SOFC compounds

et al. 2017

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A B S T R A C TAlthough economically competitive SOFC systems seems to be ready for commercialization, a broad inventory of key starting materials and fabrication processes are needed to enhance systems and reduce costs. These necessities are raised by the demands for large scale SOFC industrial production. Taking into account these reasons, we have synthesized the mean components of a fuel cell, on a large scale, by the glycine nitrate combustion method.The The obtained materials have been characterized by inductively coupled plasma atomic emission spectroscopy (ICP-AES) and X-ray fluorescence (XRF), X-ray diffraction (XRD), dilatometry, scanning electron microscopy (SEM), particle size distribution and conductivity measurements.

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Characterization of nanocrystalline Mg0.6Zn0.4Fe2O4 soft ferrites synthesized by glycine-nitrate combustion process

Cited by 70 publications

References 18 publications

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Synthesis and magnetic induction heating properties of Gd-substituted Mg–Zn ferrite nanoparticles

Scalable synthetic method for SOFC compounds

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Characterization of nanocrystalline Mg0.6Zn0.4Fe2O4 soft ferrites synthesized by glycine-nitrate combustion process

Cited by 70 publications

References 18 publications

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn2+ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn2+ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Synthesis and magnetic induction heating properties of Gd-substituted Mg–Zn ferrite nanoparticles

Scalable synthetic method for SOFC compounds

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Product

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Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method

Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn²⁺ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method