Structural and magnetic properties of Gd 3+ ion substituted magnesium ferrite nanopowders

Elkady, Ashraf S.; Hussein, Shaban I.; Rashad, M.M.

doi:10.1016/j.jmmm.2015.03.008

Cited by 34 publications

(7 citation statements)

References 29 publications

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“…Here it will be even more interesting to study the change in properties of MgFe 2 O 4 when doped with other metals. Earlier as per the literature Cr [3,12], Gd [13], Dy [14], Sm [15], Co [16], NiACo [17], Li [18], CoACr [19], Cd [20], Cu [21], Pr [22], Tb [23], Ca [24], etc. have been used as dopants in ferrites and their properties have been explored.…”

Section: Introductionmentioning

confidence: 94%

Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

Naik

Salker

2016

Materials Science and Engineering: B

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Section: Introductionmentioning

confidence: 94%

Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

Naik

Salker

2016

Materials Science and Engineering: B

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“…ions in the ferrite structure with other metal ions has also been performed to vary the magnetization. In particular, gadolinium (Gd) is a frequently used transition metal for the replacement because of its large magnetic moment, magneto-crystalline anisotropy, magnetostriction (Kumar et al 2014), and biocompatibility (Chaudhary et al 2015;Elkady et al 2015). In prior studies (Elkady et al 2015;Hejase et al 2012;Raja et al 2017;Yao et al 2009), the replacement of Fe 3?…”

Section: Introductionmentioning

confidence: 99%

“…ions in Mg ferrites and Zn ferrites was performed, resulting in a variation of their magnetization. This led to enhanced performance for magnetic hyperthermia mediators (Elkady et al 2015;Hejase et al 2012;Raja et al 2017;Yao et al 2009) and magnetic resonance imaging (MRI) contrast agents (Elkady et al 2015;Raja et al 2017). Accordingly, the Gd substitution in Mg-Zn ferrites can not only maintain the biocompatibility of the ferrites but also contribute to the control of induction heating behavior.…”

Section: Introductionmentioning

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 versatility of ferrite-based materials has made them applicable in various fields. Various substitutions or additions [ 30 , 31 , 32 , 33 ] of exotic metallic ions elements [ 34 , 35 ] have been made into the spinel ferrite structure in various synthesis methods such polymerized [ 36 ], hydrothermal [ 37 ], microwave combustion [ 38 ], molten salt method [ 39 ], sol-gel combustion [ 40 ] etc. Usually, spinel ferrites are produced using a standard ceramic technology method, which requires higher annealing temperatures and takes a long time for homogenization, yielding crystallites with small specific surface areas.…”

Section: Methodsmentioning

confidence: 99%

Annealing Temperature Effects on Humidity Sensor Properties for Mg0.5W0.5Fe2O4 Spinel Ferrite

Petrila

Tudorache

2022

Sensors

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The effects of annealing temperature on the structural, physical and humidity sensing properties of stoichiometric Mg0.5W0.5Fe2O4 spinel ferrite are investigated. In order to highlight the influence of sintering temperature on the structural, magnetic and electrical properties, ferrite samples were sintered for 2 h at 850 °C, 900 °C, 950 °C, 1000 °C and 1050 °C and the physical properties and humidity influence on magnesium-tungsten ferrite materials were analyzed. X-ray diffraction investigations confirmed the formation of magnesium-tungsten ferrite in the analyzed samples. SEM micrographs revealed the influence of annealing temperature on the microstructures of the samples and provided information related to their porosity and crystallite shape and size. This material, treated at different temperatures, is used as an active element in the construction of capacitive and resistive humidity sensors, whose characteristics were also investigated in order to determine the most suitable sintering temperature.

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Structural and magnetic properties of Gd 3+ ion substituted magnesium ferrite nanopowders

Cited by 34 publications

References 29 publications

Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

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

Annealing Temperature Effects on Humidity Sensor Properties for Mg0.5W0.5Fe2O4 Spinel Ferrite

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