Structural, optical and magnetic properties of MnxFe3−xO4 nanoferrites synthesized by a simple capping agent-free coprecipitation route

Yazdi, Sh. Tabatabai; Iranmanesh, P.; Saeednia, Samira; Mehran, Muhammad Taqi

doi:10.1016/j.mseb.2019.05.009

Cited by 17 publications

(9 citation statements)

References 27 publications

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“…This observed trend closely resembles the increase in lattice parameters reported in a previous study of about ∼8.4 Å. 30 Additionally, this trend is consistent with the Mössbauer results, which indicate that Mn 2+ ions replace Fe 3+ ions on the tetrahedral sites. This finding is supported by the Mössbauer spectroscopy, which shows that the iron ions on the MnFe 2 O 4 system are in the 3+ state, allowing the substitution of Mn 2+ to be written as (Fe x −1 2+ Fe x +1 3+ ) octa (Mn x 2+ Fe x −1 3+ ) tetra .…”

Section: Resultssupporting

confidence: 92%

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Agista,

Subadra,

Taufiq

et al. 2023

RSC Adv.

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Section: Resultssupporting

confidence: 92%

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Agista,

Subadra,

Taufiq

et al. 2023

RSC Adv.

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“…Thus, for the samples with 500 ≤ T max.heat. ≤ 800 °C, the change in saturation magnetization was primarily related to the change in particle size, which is consistent with previous studies of the Mn x Fe 3−x O 4 system [ 45 , 46 , 47 ]. Changes in saturation magnetization with the change in particle size can be explained by the existence of a non-magnetic layer [ 40 , 48 ].…”

Section: Resultssupporting

confidence: 91%

Temperature-Induced Irreversible Structural Transition in Fe1.1Mn1.9O4 Nanoparticles Synthesized by Combustion Method

et al. 2023

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Fe1.1Mn1.9O4 nanoparticles were successfully synthesized using a combustion method. The influence of the heating temperature on the evolution of the structural and magnetic properties has been studied using various methods. The structural analysis results revealed that as-synthesized nanoparticles have a tetragonal structure with an average size of ~24 nm. The magnetic measurements of the sample showed its ferrimagnetic nature at room temperature with hysteresis at low fields. Temperature-dependent magnetization measurements allowed for the conclusion that the Curie temperature for Fe1.1Mn1.9O4 nanoparticles was ~465 °C. After high-temperature magnetic measurements, during which the samples were heated to various maximum heating temperatures (Tmax.heat.) in the range from 500 to 900 °C, it was found that the structure of the samples after cooling to room temperature depended on the heating temperature. Herewith, when the heating temperature was 600 < Tmax.heat. < 700 °C, an irreversible structural phase transition occurred, and the cooled samples retained a high-temperature cubic structure. The results of the magnetic analysis showed that the samples, following high-temperature magnetic measurements, demonstrated ferrimagnetic behavior.

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“…An enlarged view of the high-intensity characteristic peak (311) shows a shift to lower angles with increasing Mn 2+ substitution (Figure b). It is due to the expansion of the unit cell as Mn 2+ ions are substituted in the magnetite structure . The increase in lattice constant ( a ) with an increase in Mn 2+ is explained using ionic radii, where the radius of Mn 2+ (0.80 Å) is larger than that of Fe 2+ (0.77 Å) and Fe 3+ (0.64 Å), causing lattice expansion; as a result, the lattice parameter increases from 0.8350 to 0.8409 nm due to unit cell dimension expansion …”

Section: Resultsmentioning

confidence: 99%

“…Due to their unique physical features, known biocompatibility, ease of production, and highly adjustable nature at the nanoscale, maghemite (γ-Fe 2 O 3 ) and magnetite (Fe 3 O 4 ) nanoparticles (NPs) are especially well suited for various biomedical applications. , Magnetization in Fe 3 O 4 can be tuned by replacing iron ions with transition metal cations, especially manganese ions, which have higher magnetic moments . It is explored for many applications which include catalysts, humidity sensors, biomedicine, MRI, microwave technologies, drug delivery, and magnetic fluid hyperthermia .…”

Section: Introductionmentioning

confidence: 99%

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Application of Mn_xFe_1–xFe₂O₄ (x = 0–1) Nanoparticles in Magnetic Fluid Hyperthermia: Correlation with Cation Distribution and Magnetostructural Properties

et al. 2022

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Optimization of manganese-substituted iron oxide nanoferrites having the composition Mn x Fe 1−x Fe 2 O 4 (x = 0−1) has been achieved by the chemical coprecipitation method. The crystallite size and phase purity were analyzed from X-ray diffraction. With increases in Mn 2+ concentration, the crystallite size varies from 5.78 to 9.94 nm. Transmission electron microscopy (TEM) analysis depicted particle sizes ranging from 10 ± 0.2 to 13 ± 0.2 nm with increasing Mn 2+ substitution. The magnetization (M s ) value varies significantly with increasing Mn 2+ substitution. The variation in the magnetic properties may be attributed to the substitution of Fe 2+ ions by Mn 2+ ions inducing a change in the superexchange interaction between the A and B sublattices. The self-heating characteristics of Mn x Fe 1−x Fe 2 O 4 (x = 0−1) nanoparticles (NPs) in an AC magnetic field are evaluated by specific absorption rate (SAR) and intrinsic loss power, both of which are presented with varying NP composition, NP concentration, and field amplitudes. Mn 0.75 Fe 0.25 Fe 2 O 4 exhibited superior induction heating properties in terms of a SAR of 153.76 W/g. This superior value of SAR with an optimized Mn 2+ content is presented in correlation with the cation distribution of Mn 2+ in the A or B position in the Fe 3 O 4 structure and enhancement in magnetic saturation. These optimized Mn 0.75 Fe 0.25 Fe 2 O 4 NPs can be used as a promising candidate for hyperthermia applications.

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Structural, optical and magnetic properties of MnxFe3−xO4 nanoferrites synthesized by a simple capping agent-free coprecipitation route

Cited by 17 publications

References 27 publications

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Temperature-Induced Irreversible Structural Transition in Fe1.1Mn1.9O4 Nanoparticles Synthesized by Combustion Method

Application of Mn_xFe_1–xFe₂O₄ (x = 0–1) Nanoparticles in Magnetic Fluid Hyperthermia: Correlation with Cation Distribution and Magnetostructural Properties

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Structural, optical and magnetic properties of MnxFe3−xO4 nanoferrites synthesized by a simple capping agent-free coprecipitation route

Cited by 17 publications

References 27 publications

Exploring the role of Mn2+ in the structure, magnetic properties, and radar absorption performance of MnxFe3−xO4–DEA/MWCNT nanocomposites

Exploring the role of Mn2+ in the structure, magnetic properties, and radar absorption performance of MnxFe3−xO4–DEA/MWCNT nanocomposites

Temperature-Induced Irreversible Structural Transition in Fe1.1Mn1.9O4 Nanoparticles Synthesized by Combustion Method

Application of MnxFe1–xFe2O4 (x = 0–1) Nanoparticles in Magnetic Fluid Hyperthermia: Correlation with Cation Distribution and Magnetostructural Properties

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Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Application of Mn_xFe_1–xFe₂O₄ (x = 0–1) Nanoparticles in Magnetic Fluid Hyperthermia: Correlation with Cation Distribution and Magnetostructural Properties